Top 5 Reasons Why My Furnace is Blowing Cold Air

furnace is blowing cold air

Whеn the chilly weather fіnаllу аrrіvеѕ in Sacramento аnd you turn on your furnасе аftеr mаnу months оf non-use, thе last thing you want tо find is that it’s not wоrkіng. Or, even wоrѕе, discovering thаt your furnace is blowing cold аіr! As exasperating as thіѕ ѕіtuаtіоn mау bе, the solution mау bе a simple fix.

Hоw Dо Gаѕ Furnасеѕ Work?

Undеrѕtаtіng how furnaces wоrk іѕ kеу tо finding рrоblеmѕ like one that’s blowing cold air, аnd having a professional fіx thеm. Thіѕ wіll also hеlр you kеер соѕtѕ dоwn because knowing whаt thе problem is рrоtесtѕ you from bеіng taken advantage of bу contractors whо trу to rір уоu оff. If you want to learn more, check out Wikipedia on this topic.

A gas furnace works by taking іn соld air, сlеаning іt out thrоugh a fіltеr, and then hеаting thе аіr wіth a gаѕ burnеr. Tурісаllу, thеу use a “steel hеаt exchanger” that converts the air frоm сооl to wаrm. It will thеn blоw оut аnd dіѕtrіbutе thе air іntо уоur hоmе wіth a fan or blоwеr роwеrеd by a mоtоr.

Top 5 Reasons a Furnace May Blow Cold Air

A dirty air filter can also be to blame.

When they become clogged and dirty, they block air flow and can even cause the system to overheat itself. When the system overheats, a safety switch will tell the furnace to shut down and retry when the furnace has cooled back down. If this happens more than three times in a row, most furnaces will start blowing cold air.  This lets the homeowner know something is wrong with the furnace. Clean the filters or change them with inexpensive replacements every two months. If the filter is not perfectly white, it’s time to change it. Remember, that’s the air you’re breathing, too! So keep it clean!

The Flame Sеnѕоr іѕ Dіrtу.

Newer furnасеѕ uѕе a flаmе ѕеnѕоr tо kеер thе furnасе burning, оnсе it starts. If thе flаmе sensor іѕ dіrtу, your furnасе will turn оn аnd begin hеаtіng but then turn соld rеlаtіvеlу quickly.

If уоu’rе familiar wіth furnасе соmроnеntѕ, уоu can сlеаn the flаmе sensor уоurѕеlf, which ѕhоuld rеѕtоrе your furnасе’ѕ heating funсtіоn. Or, уоu соuld enlist the services of a Fox Family Heating and Air Conditioning expert tо сlеаn the sensor fоr уоu. It’s typically just the cost of a regular service call for us to come out and do that for you.

The Gas Valve is Not Working.

Another culprit behind your furnace blowing cold air may be a closed or blocked gаѕ valve. Sometimes moisture or sand in the gas lines will work itself into the gas valve. This valve is constantly opening and closing every time your heater turns on. If sand was to get in there, it could cause the gas valve to seat improperly. This obstruction could cause a small amount of gas to start leaking around the furnace. If this gas began to seep out into the combustion chamber, it’s possible that the flame could “roll-out” and cause an unsafe situation. It іѕ bеѕt to have a рrо look at thіѕ, as any time уоu hаvе tо mеѕѕ around wіth gas, there іѕ a potential for danger.

An Old Control Board.

A faulty control board is аnоthеr common рrоblеm. It саn bе саuѕеd bу the solder connections on your board fracturing, causing intermittent operation of the furnace. These can be tricky and annoying to a homeowner because the system is not working one day, but does the next day. Finally, after a few of these nuisance appointments, it finally goes about for good. Those solder connections get warm with the electricity flowing through the circuits until they start to fracture. At this point, it’s time to replace that control board. You’ll want an experienced technician for changing your control board.

Pressure Switch.

A pressure switch is a safety switch that lets the furnace know the exhaust from the gas burners is venting properly to the outside of the house. This pressure switch opens and closes with the on and off operation of the furnace. Sometimes that switch inside fails to open or close on a consistent basis and will need to be replaced. These can be changed out fairly easily, but it should be noted that proper suction from the inducer assembly is needed and should be verified with a manometer before turning the system back on safely.

So There You Have It.

These are your top 5 reasons why your furnace is blowing cold air. Furnaces are trickier and have more intermittent failures than air conditioners do. This is because your symptoms will typically show up gradually instead of all at once. With furnace repairs, we ask our homeowners to be patient sometimes because we may not put a diagnosis on a unit the first time we are out to the home. We don’t want to start replacing parts and waste your money. We want to catch the component that’s failing while it’s in the act.

If уоu lіvе in the Greater Sacramento area, the HVAC professional tо call is Fox Family Heating and Air Conditioning. Your technician wіll wоrk thrоugh a series оf tеѕtѕ tо pinpoint the еxасt source оf trоublе, and get уоur hеаtіng ѕуѕtеm uр аnd running аgаіn аѕ ѕооn аѕ possible.

Thanks so much for taking the time to read this blog post. We’ll see you on the next one.

Don’t miss our video on this topic:

my furnace is blowing cold air

Using (or Abusing) the R-22 Phaseout as a Sales Tool

Some contractors selling equipment on fears that refrigerant will be illegal

I was pleased to contribute to this 11/18/2019 article in – Greg Fox

As of January 1, 2020, it will no longer be legal to produce or import virgin R-22 in the U.S., but that does not mean the refrigerant will be unavailable, unaffordable, or illegal to use. It just means that after that date, contractors who service R-22 systems will have to rely on existing stocks of virgin refrigerant or else use reclaimed refrigerant, both of which should be readily available (and affordable) for a long time, according to industry experts.  Go to article»

Turning on the Furnace for the First Time Each Year

Turning on the Furnace for the First Time Each Year

What is that burning smell when turning on the furnace for the first time each year?

As the winter season approaches, a lot of you will turn on the furnace for the first time this year.  That can be a very intimidating situation for some people.  You may have just moved into your first apartment.  Or perhaps you’ve just moved into your new home this past summer.  The AC worked fine, but now it’s time to see how the furnace is going to work this winter.

Whether you walk over to the thermostat or turn it on manually, what’s that burning smell the first time you’re turning on the furnace for the year?  In this week’s blog, let’s break down the gas furnace, and some of the sounds and smells you get when it comes on for the first time each year.

About Turning on the Furnace

You should understand the nature of the furnace is to provide warm air for your home.  And it does that with a gas flame.  But that gas flame isn’t just flying around uncontrolled the way it does in a fireplace for example.  A very structured flame is sent into the furnace.  If the flame were to roll out or overheat the furnace, a series of safety switches will engage, turning off the furnace.

Whether you walk over to the thermostat or turn it on with your smartphone, the sounds and smells that you experience can be confusing.  That’s not how the air conditioner sounded when it came on, and that’s definitely not how the air conditioner smelled when it was working.

When the furnace gets turned on, the thermostat on the wall tells the furnace which is in your attic, your garage, or your closet in the hallway to initiate a sequence of events that will ultimately shoot a gas flame into the firebox, or heat exchanger.

Turning on the Furnace:  the Basic Parts

There are a few parts that come on before that flame starts to heat the home.  The thermostat tells the control board inside the furnace to come on.  The control board is the brains of the system that will control the following events.

The first motor to come on will be the inducer motor.

Not a large motor by any means, but it’s the one that gets rid of the fumes spent by the flame that warms your home.  The control board and a pressure switch acknowledge that the inducer has come on and is working properly.

The ignitor will come on next.

Usually, it’s a hot surface ignitor made of silicon carbide that glows red hot.  About 2500 degrees.  The timer on the control board then allows the gas valve to open up and pour a controlled amount of gas over the red-hot surface ignitor.

Creating the Flame

This creates the flame we were talking about earlier, that shoots into the metal firebox, which is better known as a heat exchanger to us technicians. A small flame sensor then verifies the flame is on and sends a signal to the board that everything is burning properly, and the system is safe to continue heating the home.

Blower Fan Comes On

If the flame sensor says everything is okay, the control board then tells the blower fan to come on.  The sequence is complete.  Warm air will then start flowing into the rooms until it gets to the desired temperature.

That whole sequence of events that happens takes about 1 minute from the time thermostat tells the furnace to start, to the time the blower turns on and gives you heat through your registers.

When the thermostat senses the room’s warm enough, it tells the control board to end the call for heating, which then cuts the flame.  Meanwhile, the blower stays on just long enough to cool the furnace down quite a bit, about 60 to 90 seconds.  This helps extend the life of the system.

So how does the heat exchanger work?  Well, it “exchanges heat” by keeping the flame and its fumes inside the metal box while a fan blows air over the outside of the metal.  The heat that comes off that metal and the air from the blower is then carried into your rooms where you feel the warm air.

What’s That Burning Smell?

Folks call in every fall when they’re turning on their furnace for the first time and say the system IS working but there’s a strange smell coming through their vents. Almost like a burning smell.  When we get out to their home and verify all the motors are working properly, we let them know something most people don’t know until it’s happened to them.

So what’s that smell the first time you turn on your furnace each season?  It’s just a fine layer of dust that’s settled onto the heat exchanger.  The dust from your house has made its way past the air filter and blower assembly to the metallic heat exchanger.  As the metal heats up, the dust burns off and creates that burnt smell.  It can happen the first few times you turn the system on, but after that, you shouldn’t get that burning smell any more.

If the smell bothers you, you can just open the doors or windows to your house and let it vent out that way for about fifteen minutes.  But rest assured it’s not carbon monoxide.  That odorless gas can only be picked up by a carbon monoxide detector.

Safety First

If you do turn your furnace on for the first time or ANY time this year and your home’s carbon monoxide detector does go off, don’t just remove the batteries.  Don’t treat it like it’s some nuisance alarm, either.  Go ahead and step outside of the home and call the Fire Department.  Let them come out to make sure everything is okay before going back inside.  It might cause a big show for everyone in the neighborhood, but who cares?  It’s your family’s life on the line.

If you don’t currently have a carbon monoxide detector on each floor and the main hallways of your house, now would be a good time to pick those up from your local hardware store.

About Detectors

Speaking of detectors in your homes – if you haven’t done so already this year, it’s time to change out the batteries in those detectors around your home.  Your local fire department usually will come out for free and help you replace those batteries if you have trouble reaching those detectors on your own.  If they won’t and you’re in our area, just provide the batteries and we’d be happy to come out and change them for you.  Otherwise, any handyman in your area would be up to the task.

As a reminder, the single-most-important-thing you can do to keep your furnace clean is to change those air filters.  If the system can’t breathe in because of a dirty air filter, then it won’t be able to breathe out for you at the supply registers in your rooms either.  Again, if you can’t do it because you’re elderly or physically unable to reach the filter, give us a call!

Remove Flammables Before Turning on the Furnace

Another bit of advice we’d like you to consider is to make sure there are no flammables around the furnace.  Remember, we said that the furnace is either in the attic, the closet, or the garage. These are common places to store items that tend to be forgotten over time.

A metal flue pipe that gets very hot when the furnace is turned on can be dangerous if left unattended.  Broomsticks, cardboard, newspapers, clothing, and other materials can scorch over time if they’re resting on the flue pipe.  Setting away from the furnace any flammable varnishes, lacquers, oils, and gasoline will help keep your home safe.

Don’t Wait to Turn on the Furnace

Although you might be nervous to turn your furnace on that first time every year, do it.  Turn it on when it’s still mild outside.  Maybe don’t wait for the first winter snap to hit before finding out your furnace doesn’t work.  If you do wait, you might find yourself at the end of a long line.  Other homeowners and property management companies may be requesting service at the same time you are.

Taking Care the Easy Way

If you don’t already have someone coming out to your house each year just to make sure everything is running safely for you and your family, we’d love to be the company that gets to do it for you.  Fox Family offers an easy way to automate this. You won’t even have to remember to call us. We take care of it all.

Your furnace runs better when it’s been cleaned and maintained, much like your car. Every Fall or Winter is a good time to get the required maintenance done on your heating system. Don’t have a desire to be on an automatic program? Call for a furnace tune-up. A typical cleaning lasts 45 minutes to an hour and a half. It’s usually about a 30 point checklist, but I’ll go into that on another post.

Turning on the Furnace: a Recap

The nature of a gas furnace is to use a controlled flame to warm your house.  It’s done in a VERY controlled way by a series of safety switches.  Any unexpected events within the furnace components tell the control board to shut down the unit.

Thanks so much for stopping by, and we’ll see you on the next blog post!

Don’t miss our video on this topic:

Top 5 Things You Can Do to Keep Your AC Running the Rest of the Summer

Keep Your AC Running the Rest of the Summer

Keep your AC in Good Shape for our “Second Summer” in Sacramento

Can you believe it still gets up to 100 degrees around Labor Day?  I guess we could say we typically have a bit of a “second summer.”  I think it safe to point out we will typically still be using our air conditioners for at least another month.  As we head into September, I’d like to point out a few things you can do to make sure your AC system keeps running the rest of the summer and through the end of another year.

  1. Get Any Remaining Repairs Done

If you had us out this year to diagnose a problem or got an AC tune-up, we may have repaired the immediate cause of the failure.  I’m sure we made some other recommendations for your system that will not only make your system last longer but make things more secure for your home.  These add-ons, like a condensate safety switch or a compressor start assist kit can really help out your AC and keep it running the rest of the summer.  Also, if there were any items that were running low, maybe now is a good time to get that fixed.  You really want a well-performing system heading into next summer.

  1. Don’t Cover the AC Too Soon

Some of our customers like to cover their AC for the fall and winter so no debris falls into the bottom or snags on the fan blade.  This is a great idea, but just make sure you’re not going to use your AC anymore this year before doing so.  You can cause an overheating compressor, which is the most expensive thing to replace on your system.

  1. Change Your Filter One More Time

I know I say this a lot, but changing your filter is the single most important thing you can do as a homeowner to protect your system and extend the life of it.  I always recommend buying the cheapest filters, so you are more inclined to change them out more often.  Remember, if your filter is not perfectly white anymore, it’s time to change your filter.  That’s the air you’re breathing, and I know you wouldn’t purposely hold a dirty air mask to your face and breathe through it.  So, change those filters!

  1. To Keep Your AC Running, Keep the Coils Clean on the Outdoor Unit

Washing the coils on the outside unit is relatively straightforward, assuming the fins on the outdoor coils aren’t completely impacted or overgrown with pollen and dirt.  You should be able to simply use your garden hose to spray downward from the top of the fins towards the ground.  This rinses you fins off so they have more surface area to transfer heat.  You really just don’t want to use something like a power washer.  A little pressure is fine but if you start bending the fins, you’re going about it with a little too much strength.  Watch my video about “What happens on an AC Tune-up” to see me clean my old AC’s condenser coils.

  1. Make Sure Condensation is Dripping on the Side of the House

Last but not least, there is a 3/4 inch drain probably on the side of your house that drips water from it every summer when your AC is running.  This is a good thing, and even this late in the year you want to make sure it’s still draining properly.  If not, there might be a clog within the AC drainage system that needs to be taken care of.  High-pressure air or a vacuum cleaner on the pipe can free up the clog.  Whether you take care of it or you let Fox Family come out and take care of it, this is one thing you don’t want to neglect.  Water damage is no fun!

Take this advice as we deal with this late summer heat.  I’m sure you’re going to be using your AC a little more this year.  Its really important to take care of your AC, so it will take care of you when you need it.

If you haven’t already had your AC tune-up this year from Fox Family, let us come out and do a thorough check of your AC system and get it cleaned up so next year you don’t have any surprises sneak up on you.

Thanks so much for stopping by and we’ll see you at the next blog post.

Don’t Miss Our Video on a Related Topic:

What Happens on a Fox AC Tune-Up?

After Mild Start to Summer, 100 Degree Temps Linger in Sacramento

100-degree days linger in Sacramento

Week long stretches of high temps continue

This summer has been almost as screwy as this past winter.  Mark Finan on KCRA News says we usually have about 22 days above 100 degrees every year.  Sacramentans are used to the high temps and don’t normally panic until it hits the 90’s.  While 100 degree temps linger in Sacramento, this is when the service calls ramp up for HVAC companies in this area.  This summer started out with some cooler temperatures in June and is surprising us later in August with some week long stretches of 100-degree temps that we usually experience in July.

The hottest month of the year is typically July, without a doubt.  June, which usually heats up, only had 13 days total over 90 degrees while July had 19 days total over 90 degrees.  But this year we only had two days over 100 degrees in July and only four in June.  This was really surprising for us at Fox Family because we are typically running our vans all over town, running AC service calls and trying to get folks cool again.

A Break from high temps

Don’t get me wrong.  We were running all over town, but usually it’s so slammed we can’t get to everyone.  People end up calling around until they find a company that can come out the same day.  We still had a little bit of that, but not to the extent we usually experience.  The weather this summer was letting us catch up after a brief heatwave so we could be ready for the next wave of calls.  A welcome experience for sure!

While we usually average low 90’s to mid-’80s by now, this August has just been progressively warming up.  We started with some low 90’s but it just kept getting warmer and warmer.  As we enter the last week of August, we have nothing but high 90’s and 100-degree temps in the 10-day forecast.

Stretches of High Temps linger

If most people’s AC’s were going to break this year, it usually happens in that Late May-June-July madness.  With 100 degree temps lingering, I imagine several systems will break down towards the end of August.  These long stretches of high temps really take a toll on AC systems.  It’s those long stretches where systems that are running and running and running all day long start wearing out.  Condenser fan motors and compressors that are starting and stopping repetitively weaken as the stretches linger on.

Looking Ahead

I’m really wondering what September and October will bring.  Those months are usually ones where service calls and system replacement estimates are few and far between.  I imagine it will follow that trend but, wow what a late summer it turned out to be!  I expect the calls that we do get during those months will be for whole house fans which are great for bringing in the outside air on the cool days.  This cools off the walls, floors and ceilings so the house doesn’t heat up so easily as it does on the hot summer days.  See our videos on whole house fans below.

What’s Your Plan for 100 degree days?

While 100 degree temps linger in Sacramento, how are you staying cool during these late months of summer?  Hopefully your system is nice and cool with a perfectly functioning AC system.  I know we are going camping for the weekend up in the higher elevations of the El Dorado National Forest.  Snow melting off the peaks of the mountains are literally draining right into the reservoirs down below which makes for some seriously icy waters to go take a swim in.  Sounds like a perfect way to cool off!

Let me know in the comments below how you are beating the heat this summer.

Thanks so much for stopping by and we’ll see you on the next blog topic!

Don’t Miss Our Videos on These Related Topics:

How to Install a Whole House Fan

Quiet Cool Whole House Fans vs Traditional Style House Fans



How to Handle a Refrigerant Leak in My Home

how to handle a refrigerant leak at my home

If your HVAC technician tells you your A/C has a refrigerant leak, I want to tell you how we handle that here at Fox Family Heating and Air Conditioning.

The Environmental Protection Agency has updated the requirements related to ozone-depleting and global warming substances like R-22 and R-410, a refrigerant that’s very likely in the HVAC system at your house.

So, how do we handle a refrigerant leak at your home?  After some recent schooling online and some back and forth, I found that we can’t REQUIRE you to fix the leak in residential applications that have less than 50 lbs. of refrigerant or less.  This likely describes your system.  We’re not and you’re not required to find or fix your leaking HVAC system.  This means that if you wanted to gas it up and repeatedly let that refrigerant leak out, you’re apparently not forbidden to do that.

Fox Family’s Position

We at Fox Family have strong feelings about continuing to allow the release of harsh chemicals that contribute to the degradation of our planet, namely the ozone layer, as well as other contributors to global warming.  We also want future generations of plants, animals, and humans to have a chance to enjoy their lives, breathe clean air, and thrive!

Here’s what happens when your system leaks.  Large amounts of CFC’s, HFC’s and HCFC’s (which is what refrigerant is) are spewing into the atmosphere every day.  Industrial and commercial buildings are the main culprit, but far more homes than commercial buildings exist.  Regardless, leaking refrigerants mix with wind currents, air pressure and updrafts, bringing those chemicals into the lower atmosphere.  No matter what people say about chlorine being heavier than air, it’s been proven several times over that these chemicals are amply mixed with our lower and upper atmosphere where they linger.

Unfortunately, rain doesn’t bring them down.  As those chemicals rise even further through updrafts and pressure differences in the air, high energy solar radiation breaks down those chemicals, releasing the damaging chlorine.  Those chlorine particles stay in the stratosphere for several years, where it eats away at the ozone layer.

Having a Conversation

But back to your refrigerant leak.  Some HVAC companies can and do continue to come out and refill your refrigerant for as long as you need it, because face it, you need to be comfortable.  I get it!  But at some point, a Fox Family technician is going to have a conversation with you about finding that leak and coming up with a plan to repair the leak or change out your system.  It’s the right thing to do.

So, do we “gas and go” year after year?  Two to three times at your house is perhaps our limit.  If you don’t want to fix it, your love for the planet may not be in line with ours.  HVAC companies make pretty good money by selling you refrigerant.  It’s easy labor for us, and not very time consuming either.  That’s why it’s called “gas and go.”

Refrigerant Leak Searching

But refrigerant is expensive.  If you’ve got to keep refilling your refrigerant, who knows how often, it can really add up quickly.  If we’ve been to your home before, then we have a baseline from which to draw our information.  But if it’s our first time out, it would be unfair to you for us to recommend you start a leak search immediately.

What if it’s just a loose Schrader core at the service valve where the technicians hook their gauges up?  I’ve seen this before.  The system was way low on charge, and when I took the cap off the service valve, it was slowly shooting liquid refrigerant into the air.  I tightened the core and the system hasn’t leaked out since, or at least they haven’t called me back yet.  But it’s a start.

Striking a Balance

As an HVAC company, we’re damned if we do, and damned if we don’t.  If we say you need a leak search the first time out, people may think we’re being pushy sales-techs.  If we don’t and they leak out again, we might be criticized for not recommending a leak search at our earlier call.  These people will later want us to come back out and replace the leaked-out refrigerant for free.

Other times, we come upon an R-410 system made between 2008 and 2015 that’s leaking. It has copper coils which we know did NOT mix well during that time of production.  If it’s an Aspen or ADP coil, I know exactly where to go every time to find that leak: in the evaporator coil near the furnace.  If I pop the cover off and look low on the two slabs of the A-coil, I’ll always find oil staining the coils, or an oily feel to the bottom of the primary drain pan, under the evaporator coil.  Sometimes, with a quick look into the p-trap, I’ll see the oily water right there in the PVC.  An easy fix!

The Customer’s Role

But you know your system’s history better than us.  Our customers must help us out by letting us know if they’ve had another company come out and charge their system up.  If you have a big leak, we could refill your refrigerant today, and it will be gone by tomorrow.  Because they’re not liable for your system’s performance, most companies aren’t going to provide a complimentary refill just to get you up and going.  They know it’s just going to leak out again.

Some companies will put some sort of leak stopper fluid into the lines.  It’s a lot like that green slime they put in bicycle tires to find the leak and plug the hole from the inside.  Once again, about half of the HVAC guys out there will tell me I’m wrong, but I won’t put that stuff in your system, because it can clog up the metering device at your evaporator coil, and now I’m on the hook for your TXV not working right.

A lot of manufacturers will agree with me when I say nothing should be in your refrigerant lines besides virgin refrigerant.  At the most, we’ll insert some dye so we can come back later and identify where the leak is.  But that’s only after we come out and use an electronic sniffer and visually check the system for leaks.

Refrigerant Leak Searching: How It’s Done

Let’s say you’ve decided to find the leak so we can figure out what to do next.  Fox Family’s leak searches come in 3 stages:

Stage 1: Inspection

A stage 1 leak search includes an inspection of the condenser and evaporator coils as well as the line set that runs in between for leaks.  We will use vision, soap bubbles, and/or an electronic leak detection device.  This searching process can last for up to an hour.  What will this process cost?  If the necessary repair is easily accessible, the price of the repair and leak search will be covered for the price of the stage 1 leak search.  You’ll be liable for your refrigerant refill one last time.  But we always put the cost of the leak search towards the cost of your repair.

Stage 2: Using Refrigerant Dye

If we can’t find it that way, we go on to a stage 2 leak search.  This means adding refrigerant dye to the system and returning in about a month.  This allows the refrigerant to circulate through the system.  The dye will spray out of the leak along with the refrigerant and oil.  The small spot left behind provides a visual of the leak location.  The cost of this stage 2 leak search will also go towards the total cost of the leak repair.  We almost always find it in this case.

Let me respond to the people out there who say, “I thought only virgin refrigerant was supposed to be in the lines.”  It’s always good practice to recover any remaining refrigerant in the lineset, put on a new filter drier, and evacuate the system properly.  No matter how small or where the leak was, the system surely lost some of its vacuum during this leak.   In my opinion, just pumping the system down and releasing the charge isn’t really good practice.

Stage 3: Pressure Testing

If we still can’t find the leak, a stage 3 leak search is available.  It requires us to isolate the 3 portions of the refrigeration tubing from each other.  We separate the outdoor coil, the indoor coil, and the line set that runs in between.  Fox Family brazes on a valve stem to these pieces of equipment.  The technician then pressure tests each one individually in order to find which one is leaking.  This stage of leak search is very costly and is very rarely ever used.  It also takes a lot of time on the owner’s part as well as the technician. Because it requires that we leave the system isolated for days at a time, it can be uncomfortable for the homeowner in the middle of summer.


This summarizes how Fox Family Heating and Air Conditioning handles a leak search.  Other companies will handle it in their own unique way.  I hope this sheds some light on the process used by Fox Family for our customers who’ve asked.

If you have any questions, comments or concerns, please feel free to leave them down below in the comments section.  This always sparks conversation, as methods for dealing with leaking systems vary quite a bit from contractor to contractor.

Thanks so much for stopping by, and we’ll see you next time!

Don’t miss our video on this topic:

how to handle a refrigerant leak

What Happens if I Don’t Change the Air Filter for My Air Conditioner?

How often do you need to change the air filter

Do I Really Need to Change my HVAC Air Filter?

Most people know they need to change the air filter for their air conditioning system.  How often would say you need to change that air filter?  That’s what we are going to talk about this week on Fox Family Heating and Air.

The Air Filter Basics

Hi I’m Greg Fox, and we at Fox Family are so proud to be able to take care of your HVAC system.  Typically, the filters you buy at the store say to change them every 90 days.  There’s an arrow on those filters that points in the direction of the air flow.  It’s important when changing these out that you follow the instructions on the filter so they work effectively.

Most of us have the one-inch pleated filters that get changed at the return air filter grille in the ceiling or lower on the wall if your ductwork is under the house.  That’s not as common, though.  Others must replace their filter at the air handler itself.  That air handler will be either in your attic, in a closet somewhere, or in your garage.  If you have a newer home, the air filter is usually found in the attic.  Later model homes will have the furnace or air handler in the closet or garage.  You’ll know it if it’s in your closet because you can hear it pretty easily.

If you don’t know where your air filter is, because you just moved in to a new home or you’ve just never thought about what happens if you don’t change your air filter, give us a call here in the Sacramento Valley and we’ll be happy to come out and show you.

The Blower Motor Gets Dirty

The filter is there to keep your air handler and the rest of the system clean.  On most systems around Sacramento, the blower motor and its fan blades are the first thing that will appear dirty if you don’t change your air filter.  That doesn’t seem too important, but if your fan blades get even an 1/8” of dust build-up, your air conditioning system will decline in efficiency.  The motor must work much harder to spin the fan blades because it’s heavier.  This can make your blower either slow down or just quit working altogether.

I’ve seen some blower fan blades so impacted with dirt and other things,that the scoops that make up those fan blades were completely full.  There was nothing to scoop the air and throw it in to the house! Those scoops are only a ¼ to 3/8 inches deep.  So, you can see how a dirty blower wheel can really decrease the air conditioner’s performance.

The Evaporator Coil Can Become Clogged

When we come out to service calls that have a dirty blower assembly, it usually leads to inspecting the next part in your air handler that the dirty air comes into contact with:  the evaporator coil.  This is the cold coil that the blower sends air through to cool your home.  This is a big one, folks!

An evaporator coil is similar to a radiator grille in a car.  It has tubes that go back and forth left to right for about 20 to 30 turns.  Layered in with those tubes are some tightly woven aluminum fins which form a coil called the evaporator coil.  If your blower motor doesn’t get dirty from a never-changed air conditioner filter, this evaporator coil surely will.  There’s just no way for the bigger particles of dirt and hair to get through this coil.

It’s Trouble

The consequences of a dirty evaporator coil are very detrimental to your air conditioner’s proper operation.  Air is supposed to flow through this cold coil at a certain rate and flow, through the ducting system that delivers air to the registers in your room.  If this evaporator becomes laden with dirt it will slow the air down so much sometimes that this normally cold coil becomes a giant ice cube.

The warm air from the house is designed to become about 20 degrees colder when it passes through this evaporator coil.  Slowing down the air flow with a dirty coil can make that 20-degree effect become a 40-degree effect, which in turn reduces the air flow even more.  The coil will eventually begin to quickly freeze into an ice cube!  No more air will get through the system and into your rooms because it’s become a giant ice ball!

A Snowball Effect

Most people turn their system off at this point.  What happens next can damage your system even more!  The ice ball begins melting, and eventually will increasingly melt downwards onto the blower motor where we all know water and electric motors don’t mix.  This does happen frequently and can cause the motor to stop running altogether.


This is the air you’re breathing!  Would you like to know exactly what gets caught in these filters and then becomes part of the filters itself?  — dirt from the surrounding air, dander and fur from our pets, flakes of skin from our bodies, hair from our heads and bodies, mold, pollen, grass, and dust tracked into your home from people coming and going all day.

Your house has couches and beds that carry dust mites which leave their microscopic waste in the carpet, which eventually makes it into the filter for your air handler.  Smokers leave their fumes around, which stick very easily to the filter, and common household products like sprays and  cleaning solvents also get drawn into them.

Have you ever wondered why your filter sometimes gets black?  If you burn candles in the house, the smoke from the flame mixes in with the air.  If your air conditioner is on, it sucks that smoky air into the system.  That soot gets lodged into the filter as well, making it black.

We have a lot of wildfires here in California that cause the air to become so thick and harsh to breathe, some people start wearing face masks.  Even if your home’s windows and doors are all closed up, it seeps through the cracks in your home making its way to the filter.

What are some other things you think are getting stuck in these dirty air filters?  Are there local pollutants in your area that inevitably make it to the air filter?  Let us know in the comments section below.  I’ve seen candy wrappers, old air fresheners, cigarette butts, bottle caps and so many other things in there.  It’s absolutely gross!

The Lining of the Ducts and Supply Registers Get Dirty

If you just moved into a house and know that the last tenant there was a smoker, there’s a brown slime very likely lining the inside of the ducting system leading to your rooms.  You may even see brown gel on the registers in those rooms.  If it’s lining the ducts, it’s in your system, and you’re breathing that air as well. Dirty air filters allow small particles of air to pass on into the ducts as well.  I usually refer to it as moon dust, because its so fine.

Dust and Airborne Particulates Mean Poor Air Quality

I like to think of it this way.  If you were to put an air mask on that started out white, and after even just 3 months, it was gray or brown in color from all these things listed above, would you still wear that air mask?  No.  Why? Because that would be disgusting right?  I think it’s the same when we don’t change our air filters for our air conditioning systems.  Click here for a more in-depth look at the air quality in your home and how it can affect your health.

Change Your Filter!

If you buy filters at the store, they usually come white with pleats or ridges to help increase the surface area of the filter.  If that filter isn’t perfectly white, it’s time to change that filter.  This is why I don’t recommend buying the super expensive filters, because people get attached to them, and don’t want to spend that $20 again.  Just get the super cheap filters like I’ve been using at my house for years.  My system is still perfectly clean because I change them so often.

90 Days?

Filters say on the trim to change them out every 90 days.  That can be misleading because in the off season, when its mild outside, we don’t really use our system to heat or cool us.  It’s nice outside.  During these times of the year your filter isn’t getting dirty, so there’s really no need to change them.  But during the hot times of the year we might need to change them once every month or two.  That’s 30 to 60 days.

Here’s how I do it.  I see my return air filter grille every time I walk down the hallway in my house.  Naturally as an HVAC technician, I look up at my filter in the ceiling pretty much every time I pass through the hallway. If I see the filter is not as perfectly clean as it was when I bought it, it’s time to change my filter.

Set a Reminder on Your Phone

Renters of homes and condos are notorious for not changing the filter in their homes. It’s not their system, so they don’t know how or they don’t care about extending the life of the HVAC system because they don’t have to buy a new system if it fails.  So, homeowners and property managers, set yourself a reminder on your phone every 60 days or so to stop by your property and change those filters.  If your not doing it, the tenants don’t seem to be doing it either.

We work for a few property management companies, and the number one call we respond to isn’t a broken-down system, it’s just the filter is so heavily impacted the system can’t breathe right.  If the system can’t breathe in because it’s dirty, it can’t breathe out either.  So just keep that in mind.

Wrapping Up

I really hope this explains what happens if you don’t change your air filter on your air conditioning system.  The filter says every 90 days, but in the summer and winter it might be more often.  Just keep an eye on it and visually make sure it’s always clean.  If you don’t, all you’ll get is mayhem.  Repairs happen.  But, when it’s done out of response for not being maintained properly because of something as easy as changing your filter 4 times a year, that could’ve been avoided.

Leave me some comments down below and let’s start a conversation about this topic.

Thanks so much for stopping by, and we’ll see you on the next blog post.

Can I Still Use My A/C With a Bad Capacitor?

Can I still use my AC with a broken capacitor?

A Common Air Conditioner Problem in the Sacramento Valley

Every spring and summer, we get a lot of phone calls from customers saying their AC isn’t working.  A good portion of those calls is for a common repair.  Their capacitor has failed.  If your technician has told you that your AC capacitor is bad, it’s definitely one of those items you’re going to want to replace. And I’m going to tell you why in this post.

Fair Warning

I want to give a fair warning to everyone reading this.  If you’re reading this with the intention of changing your own capacitor, they carry a lot more voltage than the typical 240 volts that runs the air conditioner.  Capacitors can and will shock you even when the power is turned off.

Serious injury and death can occur, as high voltage doesn’t mix well with the human body.  So this blog post is not meant to teach anyone how to install or replace a capacitor.  There are other YouTube creators that will explain it to you.  I recommend having a real HVAC technician handle this repair as that person will know how to discharge the capacitor properly so no one gets injured.

What is a Capacitor?

A capacitor is a storage bucket of electrons that is constantly giving itself up for the motor it supports.  And, they don’t make them like they used to!  Capacitors made in the 60’s 70’s and 80’s were designed to last a long time.  As a technician, I still come across these late model air conditioners and I’m amazed their capacitors are still running just fine.

That’s unheard of these days.  Capacitors made today are typically designed to last five to ten years.  There are definitely some brands of capacitors that are made better than others, and it’s up to your HVAC technician to find those good brands and use them in the best interest of you, the customer.


I’ve seen caps that only lasted two years!  I know of certain brands of air conditioners that are installed brand new, and two or three years later, we are replacing the capacitor.  Then an HVAC company comes out and replaces theirs with a cheap or less proven brand, and it gives out in a short amount of time, with no warranty on the item.  So the customer has to buy another one.  That’s frustrating for the customer, but not for the HVAC company. They get to keep charging $200+ to keep your AC running every other year.

We use MARS brand capacitors because they are made in America and I personally believe they last longer than the others.  There are several other brands to use out there, but we don’t switch it up and use those other brands just because we happen to be near an HVAC supply store that sells cheaper capacitors.

A Dead Giveaway

Most of the motors in your air conditioner can’t run without a good capacitor.  Like I said, they support these motors.  They help the motor start and run efficiently.  Some people have gone out to their air conditioner and noticed the fan wasn’t spinning on their AC as it should be.  So they get a stick or something to reach into the fan shroud and try to manually get the fan blade to start spinning.  And it works now!  This is a classic sign that the capacitor for that fan motor is bad, and a good example for you that demonstrates why these motors can’t start and run efficiently without a good capacitor.

And we can’t just put any old capacitor in there, because it needs to be the exact size recommended by the manufacturer.  If it isn’t, the motor might start but will operate out of balance. It causes an uneven magnetic field around the motor, which can make the motor noisy, make it work harder (raising the cost to run it,) or just cause the motor to burn out altogether.

Other Complicating  Factors

There are differences in a typical dual run capacitor that normally comes in your AC and a start capacitor that can be added onto your system either by the manufacturer or at your house by a technician.  I’ll explain those in a different blog post and video when I make them at a later date.

But for the purposes of this blog, I wanted to answer a question recently posed by my best friend Matt.  It’s actually an excellent question to answer for other people out there.

If your capacitor has failed, please don’t try to run that part of the system.  It’ll only cause more damage to the system, which might force you to replace a bigger, pricier part, or your entire system.  So just be patient.  Hopefully, your technician has one on their truck already.  They usually will.

Use Caution

Some of you folks out there changing these out on your own better be careful.  Capacitors carry a lot of power and will strike before you know it.  So, that’s just my last bit of warning for you DIY’ers if you try to navigate this repair on your own.

If you are buying these parts online because of price, they might be cheaper, but that’s nothing compared to getting injured or possibly ruining a more expensive part because you didn’t hook it up correctly.  If you’re paying the average price of $100 to $300 dollars for a capacitor from your technician, (depending on which part of the country you’re in,) it’s because you’re paying for that company to have the right one on their truck and install it right now for you.

Thanks for coming by and we’ll see you on the next post.

5 Reasons My Air Conditioner Needs Locking Safety Caps

Air Conditioning Safety Tips for the Sacramento Region

Today I’m going to give you the top 5 reasons your air conditioner should have locking safety caps on the access ports.  Welcome to Fox Family Heating Air and Solar!

Starting Out

When I started my career in HVAC in 2010, locking safety caps were already required by the International Mechanical Code. The International Mechanical Code is something all 50 states have adopted as their rule for the installation of air conditioning systems.  However, HVAC companies were slow to adopt this rule, most likely because it was just another expense to complete their services for you the homeowner.  So today, I wanted to give you 5 reasons you need locking safety caps on your air conditioner.

In 2009, the International Mechanical Code adopted the code 1011.10 which says “…refrigerant circuit access ports (which carries the refrigerant to and from your outdoor AC, and indoor cold coil) shall be fitted with locking type tamper-resistant caps or shall be otherwise secured to prevent unauthorized access.”

Later in the chapter it says in 1012.3 those same, “…refrigerant circuit access ports shall be protected in accordance with 1011.10 whenever refrigerant is added to or removed from an air conditioning system.”

Taking Care of Those You Love

Here are 5 more reasons why we as homeowners should follow this rule.  No single reason given here is more important than the other, so pay close attention to all of them.  They could affect someone you love.

1.  Prevent someone from deliberately inhaling the refrigerant to get high

It’s called huffing, and it seems to be some sort of game or addiction to obtain a certain feeling in the user’s body and mind.  Pay close attention here.  Did you know the refrigerant in your simple air conditioning system outside your house actually displaces oxygen?  It will literally take your breath away.  According to the National Inhalant Prevention Coalition (NIPC) and the Alliance for Consumer Education’s (ACE) Inhalant Abuse Prevention, “huffing can cause someone to suffer cardiac arrest and die whenever they 1. inhale, the 1st or the 100th time.”  There are several videos online about this and it’s been happening for a while.

2.  Prevent drug users from stealing your refrigerant

With the cost of R-22 skyrocketing over the last few years because of supply and demand, the second reason we should be putting these locking caps on your air conditioners is to prevent drug users from stealing your refrigerant. Drug users can make a quick buck by stealing it and selling it to someone locally.  This enables them to continue their habits on your dime because now you’re going to have to pay top dollar to have the AC recharged.  At the current price of $100-$200 dollars a pound, that could get expensive real quick!

3. Refrigerant is Poisonous

Number three is simple. AC refrigerant is poisonous, and poison must be kept away from children.  Nobody thinks something bad can happen until it does.  Just doing your part to protect the lives of children can do a world of good.   These locking caps are tamper-resistant, so instead of being able to unscrew the normal caps off the access ports, these locking caps will just keep spinning and spinning until they lose interest in whatever they were trying to do.

4. Protecting the Environment

R-22 is an ozone-depleting substance which the EPA has deemed a controlled substance. The chlorine in R-22 that gets into the air is burning a hole right through the ozone layer.  We should all be trying to do our part in preventing anyone other than a licensed HVAC technician access to your refrigerant.  HVAC techs must add and recover refrigerant in a manner that minimizes refrigerant loss to the atmosphere.  The EPA even requires we carry a card proving we’re allowed to this.  Next time your “HVAC technician” or handyman comes to service your AC, perhaps you’ll want to ask to see their EPA 608 card.

5. Protecting You

The fifth reason to have these locking caps on your AC is to protect you! Protecting yourself from liability in this day and age is crucial.  Everyday business owners, HVAC company owners, and yes even regular homeowners could face negligence charges by not protecting society from the dangers of air conditioning refrigerant.

Okay, Let’s Do It!

I think this is one of those topics we should be proactive about.  As a homeowner, don’t wait until something happens on your property before you agree, “OK, let’s put those locking caps on the AC.”

HVAC company owners, you should know every time your technicians add or remove refrigerant, it’s your responsibility to replace those old twist-off caps with locking caps.  This doesn’t have to be another great selling opportunity.  They’re just locking caps.  Yes, they cost about $350 dollars for a pack of 50 of these caps, but this is just another opportunity for us to protect ourselves from liability.  Charging a reasonable price to cover your costs is really all we as HVAC owners should be doing here.

Doing Due Diligence

At Fox Family, we use NoVent locking caps.  They’re color-coded green for R-22 and red for R-410 refrigerant.  Each color has its own specific key, so I always carry the red and green keys with me in my tool bag.  There are also silver locking caps that are universal.  Either way, a special key is required to place them on, or remove them from the access ports on an air conditioner.

We usually buy these NoVent locking caps and keys at the HVAC supply stores around town.  And these stores try their best to restrict purchases of HVAC tools like these to not just anyone, but, in a pinch, I’ve found the caps are pretty easy for anyone to buy online.  So, even if someone was to be successful getting past your locking caps on your AC, you’ve done your due diligence by adhering to the International Mechanical Code.  In my judgment, you’d be protected because you were trying to do your part to protect others from gaining access to your AC’s refrigerant.

Cover All the Bases

You might say, “well my AC is a package unit up on the roof.”  These units are still required to have locking caps on them unless you have some sort of locked area enclosing the system to prevent anyone from tampering with the equipment.  People can still get on your roof and steal your AC unit if they really want to.

View my video on this very thing:  Just a few months after we installed a brand-new system on a rooftop in Sacramento, the copper coils were stolen right out of the system.  Reports from neighbors said they saw a guy messing with something up there, and all the sudden they saw something white spraying from the unit.  That’s was the copper refrigerant lines that he simply cut and removed from the system.

If someone really wants your system, they can take it, but adding locking safety caps to your AC system WILL help to prevent access to the system.  And that’s really all you can do.


I hope this has helped explain what locking safety caps are and why you need them on your system.  Once again, let’s be proactive about this and not reactive.  Protect your friends and family and get these locking caps on your system as soon as possible.

Thanks so much for watching and we’ll see you on the next blog!

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Courtesy KJRH-TV, Tulsa, Channel 2

What’s the Best Way to Cool My Two-Story House?

cool your house with Fox Family HVAC

Making the Most of Your Air Conditioner This Summer in Sacramento

As an HVAC technician, I have the comfort in my two-story home dialed in.  The upstairs is just as big as the downstairs for the most part.  But in the summer, the heat rises so dramatically to the second floor it seems I’ll never get the second floor to cool down by the time we go to bed.  Knowing how to control the summertime temperatures in your Sacramento area home can be a bit of a mystery for some.  That’s what we’re going to talk about today on Fox Family Heating Air and Solar!


As the typical 100° day begins, you have a nice cool attic and rooms throughout the house are at the nicest temperature they’ll be at all day.  If we could just keep our homes at this summer morning temperature, we’d literally be in paradise.

But by 9 am you can feel the warmth already pouring in through the sliding glass door.  If you don’t turn your AC on soon, it’s going to start warming up in the house.

Do you have one thermostat in your home or more than one?

If you only have one thermostat but your home has two levels, an upstairs and downstairs, then your AC system is intended to cool the whole house at one time.  It’s a “single-zone” air conditioning system.  If you have two thermostats, whoever installed your home’s HVAC system set it up to have “two zones”, upstairs… and downstairs.

If you have one thermostat that turns on the air conditioning system, you may notice the upstairs is still warmer than the downstairs, or vice versa, even when the system is supposed to be cooling.  Downstairs where the thermostat is it says 75 degrees and it feels like 75 degrees.  But upstairs you know it’s 80 degrees because the meat thermometer you got from your kitchen accurately reads 79 to 80 degrees upstairs.

Yes, change your filters, yes check the batteries in your thermostat, but we know that’s not the issue here.  The issue here is that downstairs gets more air than upstairs.  So how are we going to fix that?

A Weekend Project

Getting a thick blanket of insulation in the attic is critical to keeping your cool air in your home.  So, if your insulation levels are low, this is a low-cost weekend DIY project for that certain handyman in your home, or you can hire a contractor like us to come out and do it for you.

Whole House Fans

A whole house fan is a great idea for mornings and late evenings, but any time after 10 am, you’ll just be bringing in the hot outside air, so most people are going to resort to their AC system.  If you want to know what a whole house fan is and what it can do for you check out my video on installing a Quiet Cool whole house fan.

Any time after 10 am, most homes in Sacramento are starting to run their AC’s and will continue cycling that AC on and off throughout the day until about 11 pm or later.  If you only have one thermostat, chances are that one floor cools better than the other.  The reality is just that.  The people who installed the system ran all the pipes and ducts where they were supposed to go.  But they just didn’t quite finish the project when they walked away with unbalanced airflow issues in the house.  This is really common in new homes where teams of install crews are literally just slamming these systems in so they can do the next one tomorrow and move on.

Installing a Manual Damper

What we try to do in these cases is find the part of the house that is blowing more air upstairs or downstairs.  Then we’ll cut into the ductwork and install a manual damper.  A manual damper is round like the ducts in your house.  It runs in line with the duct and has a paddle on it that opens and closes allowing more or less air through it and on to the rest of your house.  If we can adjust this manual damper or in a few cases, a series of manual dampers, we can adjust the airflow accordingly in your home.  This is the way we can balance the airflow in your two-story home if you only have one thermostat.

You might ask “why don’t we just shut off the registers around the house until we achieve that?” You can… but it’s not recommended as a practice by HVAC professionals because the registers can start whizzing and making noises.  The pressure of the air trying to enter the room can cause the registers to start vibrating and rattling, which causes other issues.

A Fine Balance

The air conditioning system has a sort of blood pressure to it.  When we start shutting down registers around the house it affects the system’s static pressure.  If the air can’t get out of the system, expensive compressors start failing, motors start seizing up, and your HVAC system gets to a point where it doesn’t want to cool the home anymore.  There is a fine balance point we are trying to achieve here with this static pressure, so letting an AC tech balance your ductwork is recommended for the longevity of your system.

If you have two thermostats, you have a zoned system which will let you decide whether you want the downstairs AC on or the upstairs AC on.  Does this sound enticing to you?  If you don’t have this setup currently, it can be done on any AC system in the Sacramento region.  It usually takes a good amount of labor for people to take a system that only has one zone and make it have two zones, but it can be done.

A Typical Sacramento Household

The typical home we work on is one where someone is home most of the day, like a parent staying home with a child or for retirees typically home most of the day.  I tell people in these homes to focus on running the AC downstairs where they typically are throughout the day.  If you like it 75 degrees in your normal living areas, set it to 82 upstairs, in the area you’re not using.  Run the AC primarily throughout the day downstairs at whatever temperature you’d like, until about 6 or 7 pm.  Then, shut the thermostat off for downstairs and have the upstairs start cooling off so that by the time you get to bed, it’s cool enough upstairs to sleep for the whole family.

It’s already 75 degrees downstairs when it shuts off, so it’s not likely to warm up super-fast and make it uncomfortable for you.  Nobody needs the AC downstairs during this time so set the downstairs to be 82 degrees.  It won’t get there overnight, but at least the system doesn’t come on downstairs, so the AC can focus its efforts on cooling your two-story home down as quickly as possible.

Master of Your Castle

You can set it up however you want on your thermostat’s schedule.  If you need help with that, call Fox Family or text us and we’ll get out to you and set it up.  Having two thermostats makes sense when the home’s system isn’t big enough to cool the whole house at once.  Your home’s AC system with two thermostats is designed a little smaller.  This is because it’s designed to cool just one floor or one zone at a time.  For many people in the Sacramento region, they can save money and maximize efficiency by using smaller systems.  The smaller the system, the less you’ll pay for the electricity it takes to run the AC.  We can also save money and energy when we don’t try to cool the entire house at one time.

Use Your Thermostat Effectively

If you have a one-thermostat, two-story home that is 1500 sq ft or more, you might have uneven temperatures.  If upstairs and downstairs are at different temperatures, balancing the ductwork will correct the issue.  This means upstairs and down receive the appropriate amount of air to cool the house more evenly.  If your house has two thermostats and still have uneven temperatures, learn how to use your thermostats more effectively.  Learn to control the temperatures in your home.  Have the AC on downstairs during the day, while upstairs stays off or is set higher, such as 82 degrees.


I hope this has given you some good information on how to cool your two-story home more effectively.  If you need any advice or help with this, let me know in the comments down below.  I’d love to start a conversation about homes with two zones.  How do those homeowners strategize their airflow throughout the day?

Thanks so much for watching and we’ll see you on the next video.

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