Anyway, cold air is felt coming thru the vent. Do the ducts for the problem vents run through your garage, or close to an exterior wall? As a result, any air that blows out of the vents while your heater is off will usually feel cold. Have reset thermostat 3x already and ran through checks. Several issues could be going on with your home’s heat. It could even be running in the air conditioning mode due to a malfunction. If you turn on the heating system and notice that cold air is coming out through the vents, then this shouldnâ t be puzzling, especially if the system has been off for a while. Change the air filter A dirty air filter restricts airflow into your furnace. So 85-92°F feels cold to new heat pump owners. If you have gone through these basic troubleshooting tips and you are still blowing cold air, you’re ready to make a call to your local HVAC service to have the issue diagnosed and fixed by a professional. Where can I get one? What to do: Go to your thermostat. I guess we can try to insulate it more. I admit that the air coming out of some vents in the smaller rooms feels warmer than other vents in the larger rooms. If your pilot if off, relight if you know how to, if the burners don’t come on, you may need to call your local HVAC. I have a ranch, w/ a little space in attic, but we never go up there (not finished--only storage). I have a draft occurring in my 2 story home, usually on windy days. The colder the outside temperature gets the more air we have dropping from the vents. of Energy and a few other sites had similar R value requirements, so there must be some explanation. The Flame Sensor is Dirty. When the HVAC is off, the outside air pushes its way through the vents, that's also why sometimes you will notice on the lower speeds, that the air moves quicker when you are driving 70 mph vs stopped. This is plenty warm to heat your home to your desired 72°F. It's not much, but noticeable. Is this an engineered feature to keep air circulating. Well this could be caused by several things. Maybe I am old fashioned, but if I do not want air to come out of the dash vents, I want NO air to flow from vents. So why is cold air coming out of your vents? I tried all modes and all fan settings and could not stop the air flow. ... the farther away from the heat source,the cooler the air,but you could also have a hole in the air duct as well. Check the furnace’s air filter. This might sound crazy, but a heat pump can be working just fine even if the air feels cold. A dirty air filter can block airflow over your furnace’s heat exchanger, which can cause it to overheat. Have electric air conditioning and gas heat What Does Cold Air Come Out of Your Vents When You Turn On the Heat? Your heat pump needs servicing. Your objection to the proposed R values sound reasonable to me. Like this comment? If one or more of these issues is present, your vehicle may blow out cool air rather than heat: Recently bought a house In Pa. It’s winter so put the thermostat on 72 and waited for heat. 317 Inverness Way South Ste 110 Englewood, Co 80112. Just now I set the heat to 74 the heat turned on heated the room to 76 and then left the fan on after the “heating element” turned off so it was just blowing cold air at my face half the night. Very cold air coming out of heat vents. Naturally this cannot be easy so what could it be now? No air coming out, weak air or low airflow from vents in your house or commercial space.The problem could be throughout the space, or you could have one AC vent not blowing air in one room. Let us explain… The air could be warm but still feel cool. When your supply ductwork has holes or connection gaps, the air your furnace heats escapes into your attic or crawlspace. Poor insulation causes rapid cooling of the air as it moves through your home. Haven’t touched inner parts of thermostat don’t know how to. The main floor is fine, but in the master bedroom on the second floor, there is cold air entering the room from the air return vent. Well, there might not be a problem at all. It’s not exactly a common problem, but it’s not unheard of, either. It wasn't always like that, so I'm thinking it's something new. Your Pilot Light Is Out A lot depends on what you consider "almost having the a/c on." Turned out it wasn't the vents, but the tiny space between the metal of the vents and the wood of the subfloor. In other words, it's not putting out any heat at all. Have an expert inspect your ducts along with the furnace. If you have a basement, the cooler air will circulate through the vents when the fan is not running. Unreliable car heaters can make the cold winter months practically unbearable. Are the ducts at all accessable or are they sealed in the walls and floor? You’re cold, and you’ve got the heat pump running. spider. In some cases, your pilot light may be on, and the blower may be on, but the burners are not. Villa's figures came from the U.S. Dept. This is because hot refrigerant circulates through the outdoor coil, which in turn melts the frost. Please register and join our community. I set desired temp to 70. Your heat pump has frozen. of Energy and a few other sites had similar R value requirements, so there must be some explanation. If you have an air scuttle … The company says our We build a house 1 year ago and when the temperature gets below 50 degrees outside we start getting cold air coming through 4 vents of our house. Roughly a century ago, a residential heating and cooling system were unheard of, but now we don’t know how to live without it. One common HVAC mishap is when your heater turns on, but the air coming out of the vents is still cold, so what should you do about that? I can shut off the upper vents manually, or take the climate control into manual mode to direct the air only at my feet, but I still get cool air out of the side window defogger vents, which blows on my head too. Here’s what to do if you notice cold air coming from your vents: Install insulation. Double check that the thermostat has fresh batteries. Here’s what we mean: Heat pump air might just feel cool The heat pump may be blowing warm air; it just does not “feel” warm. I just want to stop the cold air from coming out of the vents when the furnace is off and the cold air coming out of the filter slot in the furnace. For those with gas furnaces, an outed pilot light is a very common problem for causing cold air to blow from the vents instead of heat. If you have leaky or holey ducts, they could be causing harm to your HVAC. Bottom line: Don't panic if you have a heat pump and if cold air blows out of your duct work for a little while on and off while you run your heat at home. Checked blower motor. It blows heat at my feet, but it blows cool air out of the upper vents. But seeing as I don't feel it on the other vents on the other side of the house (that are on the same zoning), it just seems counterintuitive. I usually have the windows down if the AC is off so I guess I never noticed. Double check to see if your pilot light is on and that the burners (blue flames) are on as well. One common HVAC mishap is when your heater turns on, but the air coming out of the vents is still cold, so what should you do about that? Villa's figures came from the U.S. Dept. Front Range HVAC can have things up and running quickly, What Temperature Should I Set My Thermostat in Winter, HVAC Maintenance Checklist: Tankless Water Heaters, Front Range HVAC, LLC. Though our home’s heating and cooling keep the temperatures and climate within the four walls of homes comfortable, homeowners know your home’s HVAC can be a major headache to address when something goes wrong. All vents are on the opposite side of the house than the furnace. Sorry - one other question. Sometimes, if the duct leakage is really bad, the air coming from your vents might feel less warm or weaker than normal. The reason for this, is that in the cooling mode, the outdoor coil actually becomes hot. Healthy air flow is vital to a heat pump. If we are sitting by the vents, we have to move because it gets so cold. Your objection to the proposed R values sound reasonable to me. Hot air out of vents on driver's side, cool ... answers.edmunds.com > Edmunds Answers Jun 25, 2009 - Hot air from vents-driver side and cool air from vents on passenger side. The outside temp is what comes through the vents whether the air or heat is on. The last thing you want from your furnace is cold air on a chilly day in Phoenix, AZ. Maybe 2 years ago, heat and air worked fabulously. Nov 19 2012, 7:46pm. Checked furnace filter and vents Roughly a century ago, a residential heating and cooling system were unheard of, but now we don’t know how to live without it. The switch has two settings: ON and AUTO. If everything seems to be in proper order on your thermostat, move on to the next step. Answered. What Does Cold Air Come Out of Your Vents When You Turn On the Heat? I have tried turning it off and on going through all the different modes - which have also shown some more strange ones such as eheat. I checked the Mode door actuator and the temp control actuator and they both are working. When overheating, your furnace can trip a high limit switch, causing the furnace burners to shut off so that the heat exchanger does not crack. If you want to keep cold air form coming into the cabin, press the recirc button. When set to “on”, the fan on your furnace will blow continually, even when the furnace isn’t actually heating the air. First, shut your heater and fan to the off position on your thermostat, because if your vents are blowing hot air, continuing to run your heater will only continue the problem. I've noticed that after I turn the heat on to warm the car up, then turn the climate system completely OFF, I can feel cold air coming through the dashboard vents and floor vents. Answer + 5. Several things can potentially go wrong with automotive heaters because, much like a home heating system, there are many components working together to heat your car. The reason the fan shuts off during this process is so the system doesn't pull the cold air from the outside across the coil while the hot refrigerant circulates. But, the air coming out of the vents can feel cold for a couple reasons: Gas furnaces produce air that is 130-140°F range. Check the filter, if it is clogged or dirty, replace it with the same filter and try your furnace out again. No heat or cold air coming out of vents. Answer. I replaced the heat blend door actuator-works fine. I disagree with the BobVila insulation page. Your heat pump might be in “defrost mode” When in defrost mode, a heat pump may blast cold air from its vents for 1 or 2 minutes (before the backup heat kicks in). Why can I not get full A/C air out of my dash vents. I can feel the colder air around the furnace. Let’s look at some common issues that would cause your furnace to blow cold air. When the weather turns especially cold—as has been the case this year in Sacramento and much of Northern California—we often get calls from customers reporting that their heat pump-powered heating systems are blowing cold air through the vents, no matter how high they turn the thermostat. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. If you know what you’re up against and some basic troubleshooting tips, you may not always have to call on an HVAC service. guests, and 1 I bought a 2019 Niro EV a couple weeks ago. I have 3 returns and a lot of supply vents and covering each one individually would be time consuming and not practical. 0 registered members (), Double check your home’s ductwork if you can to check for air leaks. Favorite Answer. There will be some air flow through the ducts because they are not a "sealed container" they are designed to move the air in your home. However, I am getting 50% cold air from the dash vents and 50% cold air from the floor heater vent. Make sure you tell the HVAC company you aren’t experiencing any heat for quick service. Then one day, MAX setting on cold air stopped working, but all other settings continues to work. These are symptoms of air pressure problems caused by poor airflow from HVAC systems. I hope this helped, Re: Air Through Vents even while ac/heat off. August 02, 2010. The same vents that provide my AC in the summer also provide heating in the winter. You should clean or replace your air filter every 30-60 days anyway for improved HVAC efficiency and better indoor air quality. If your heat pump overworks, or refrigerant is leaking from your system, it may begin to form ice, freezing up and generating cold air. The air was coming from around the vents. If this doesn’t stop the fan from running constantly or if you’re still getting cold air from your vents in heating mode, have a professional inspect the unit for more complex issues. The other day, we noticed it was drafty (our house is cold anyhow in general) and I found that cold air is coming out of the air vents when the heat is not on. Ducts running thru unheated areas will normally radiate colder air, especially running thru or close to unheated areas. Your furnace may be blowing cold air because the filter is too dirty. So what’s defrost mode? To find out if your heat pump is actually blowing cold air, hold a thermometer up to the supply vent (the ones that blow out air) then hold it up to a return vent (the ones that suck air in). I had the same problem with cold drafts coming thru the ac vents that are not used for heating in the winter (I too have baseboard hot water heating and only use the ac and ducting in the summer). Tried reinstalling software. Most pros recommend insulating your ducts up to the floor vents. We have forced air heat. Most often this air will feel cold when the fan is “on” but if you don’t notice a change in your overall home’s temperature most likely this is just blowing out room temperature air. Yikes! 11. The other day, we noticed it was drafty (our house is cold anyhow in general) and I found that cold air is coming out of the air vents when the heat is not on. So you will feel air blowing through your vents but the air is not heated or cooled by your furnace system. After I turned the A/C off, air was still coming out of all dash vents. If you suddenly notice the unpleasant surprise of your cold air coming out of your vents, several things may be happening to your heater to cause this strange phenomenon all centered on a “RESTRICTION” theme. I live in the midwest so it's c-o-l-d. We have an older home, with ac vents in the ceiling. Heat pumps typically produce air that is about 90-100°F, whereas furnaces can produce air as high as 120-125°F. Make sure your thermostat is set to HEAT and your fan is set to AUTO. Your furnace blowing cold air could be caused by hot air escaping through holes in the duct work that carries the heat throughout your building. Why is it that before the hot air come out of the vents, very cold air comes out? I have noticed that when my heating is off in the winter, I can feel cold draft air coming from the vents in my home. Shut furnace on then off. COLD air coming from heat vents when heat off, Re: COLD air coming from heat vents when heat off, http://www.bobvila.com/HowTo_Library/Insulating_Ducts_for_Efficiency-Insulation-A1780.html, Powered by UBB.threads™ PHP Forum Software 7.6.2. Clogged air filters could be causing cold air to blow out of your vents. Ok for some reason my car blows out heat out of the vents when im in motion say like going 35mph. Happy New Year All. Compromised flame sensor. Your first step is to check your thermostat. Items in red usually require a service call. If your furnace’s filter is clogged or dirty, it could be causing the furnace to switch off as part of the furnace’s safety system. Turning it to recirculate is … As for the DIY project if your covers are metal I would suggest using a magnetic tape or adhesive sheets to attach them. i.e. When the heat is on, the warm air blows, but otherwise, it's blowing cold air - it almost feels as if it's A/C air. The main floor is fine, but in the master bedroom on the second floor, there is cold air entering the room from the air return vent. 10 The air coming out of your vents might seem rather cool or your home is not staying as warm as the temperature you set. Maybe your heater is not blowing hot air even though the fan is running. My thermostat keeps showing auxiliary heat and it blows cold air. The air in your duct work is cold because it is running through the attic which is not heated. So if you feel the air blowing out of the vents while the furnace is off, the air will seem cool since it’ll be at about room temperature. fans work (1999 Cadillac Seville) All the lights indicate that the heater and air-conditioner should be working. Below is a list of possible causes. Heat pump is really blowing cold air: Now, what if the heat pump really is blowing cold air? This happens within 15 minutes of the furnace turning off and we usually have about 2 hours between cycles so you can imagine how cold the 2 rooms get until the air kicks on again. The answer may be your return air grills- also known as “cold air returns”. Several issues could be going on with your home’s heat. When the fan in the on position, it will constantly blow air through the home. What follows are some explanations why cold air is coming out of your air vents. When the heat is on, the warm air blows, but otherwise, it's blowing cold air - it almost feels as if it's A/C air. The colder the outside temperature gets the more air we have dropping from the vents. Read More: What Temperature Should I Set My Thermostat in Winter? The problem is if it’s 30 degrees or lower out it’s just blowing in freezing cold air. In the basement (which is finished), cold air is coming from the heat registers, quite noticeably, and when the furnace isn't running. All vents are on the opposite side of the house than the furnace. ? It comes on for about 3 mins releasing cold air then shuts off. 5 Reasons Cold Air Comes Out of Your Vents When You Turn On the Heat This means that you may feel cold air coming from the vents. Anyway, cold air is felt coming thru the vent. Infrared thermometer? In the basement (which is finished), cold air is coming from the heat registers, quite noticeably, and when the furnace isn't running. Is this going to happen all winter!!! If I put my hand there, it feels like a fan is blowing out cold air on a very low setting. When you place the switch in the auto position, the fan will only activate when the air has been heated to the correct temperature. Faulty or improperly insulated ducts can keep warm air from heating your home. New heat pump owners often notice that the air coming out of the vents isn’t as warm as when they had a gas furnace. The driver's side vents were blowing out hot air, and everything else wasblowing cold. Can I get it at the standard hardware store like HD? Without a flame sensor, your gas furnace has no idea how to power on or distribute warm air. Now, no air (hot or cold) comes from from vents or defroster. hi, I'm hoping some of y'all know about this problem. There are 3 returns on the 2nd floor, and about 10 supply vents throughout both floors. What’s the problem? Let’s look at some common issues that would cause your furnace to blow cold air. This is when you begin to realize something is wrong. Reduces volume of hot air blown out– Blocked return air means the furnace has less to blow out your supply vents, leaving you chilly. Their purpose is to allow air to return to the furnace to be heated or cooled. Hello, My furnace blows code air from vents when heat is off. Thermostat set to heat but cold air coming through vents. Your body temperature is around 98.6°F (everyone’s body temperature is slightly different, but that’s the average). Don't panic if you see frost on your outside equipment's coil. Maybe a few months after, no air came through the front vents - it only came from the defrost vents (when set on defrost). Furnace shuts down – Because your furnace has to run longer to heat your home, the heat exchanger overheats, causing the furnace to automatically shut down. Sometimes It’s winter. If you see steam coming out of your outdoor coil that is a normal operating procedure for a heat pump system, so don't be alarmed. These are the vents that are usually on the wall and they do not have a control mechanism to open or shut their flow. Leaks in your supply ducts push heated air into your attic or crawlspace. The air coming from your supply vent should be anywhere from 15-30 degrees hotter than the air near your return vent (depending on how cold it is outside). It’s never fun when our furnace goes on the fritz, but either yourself or Front Range HVAC can have things up and running quickly. I have a combination AC/furnace system in my home. But only cold air seems to be coming out of your vents. It's not much, but noticeable. We have forced air heat. 2004 Chevy Tahoe. It is most likely a leaky duct system—but you should have your home’s heating efficiency checked out by an HVAC professional. It feels like it's blowing, but I can't tell if it's as strong as when the heat is on. When room temp falls below 70, heat kicks off and blows hot air through vents and everything is as expected but when temp reaches above 70, it starts blowing cold air even when settings are set to "Heat" and FAN it set to "Auto". Heat pumps usually produce air that is 85-92°F. If your home’s vent system is blowing cold air when your heat is on, your home may never really feel warm and your heating bills will probably continue to climb. The reason that a back-draft occurs is the same reason that air moves any where there is higher pressure one end than the other, if the main part of your home is at a lower pressure than that in the return you will have a draft from the cold air return, so look for any exhausts that may be on or chimney vents , anything that vents out of your home. Heat blows on a auxiliary heat check but cold air with heat pump check. Make certain that the set temperature is higher than the room’s temperature. My wife thinks that some of the vents in our house is blowing cold air. I have to physically close the dash vents, and then i can feel the air a little stronger at the floor vents. It continues to blow when it's in auxiliary also but w/o heat just air. The gas furnace must have the pilot lit, which is absolutely imperative if the fuel or gas to the furnace is … Only registered users may post in our forums. We noticed cold air blasting up from our heat vents last night. Visitor in Newbury Park, CA on . A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. If you want to keep cold air form coming into the cabin, press the recirc button. It is an air inlet. Your furnace can then trip a high limit switch which will, in turn, cause the furnace burners to shut off so that the heat exchangers don’t crack. If so, your heat pump is blowing warm air that just feels cold to you. When im at a stop light i dont feel any air come out but as soon as i start moving the heat starts to come out ALL vents. If everything seems to be heated or cooled your air vents proposed R values sound to! Air out of your air vents may need attention the vent on with your home ’ s just blowing freezing... The answer may be on, and you ’ re cold, the coil... Feature to keep cold air on a very low setting they could be causing harm to HVAC..., but the burners ( blue flames ) are on the opposite side of the vents efficiency... Air coming from the vents, and you ’ ve got the cold air coming from vents when heat is off is on and AUTO is!, very cold air is not blowing hot air, and 1 spider so could. Do not have a draft occurring in my home 5 Reasons cold air your ducts along the... Consider `` almost having the A/C on. space between the metal of the vents while your heater is so... Or lower out it was n't the vents, we have dropping the... Through vents sites had similar R value requirements, so there must be some explanation caused by poor from. Temperature should i set my thermostat keeps showing auxiliary heat and your is. Ran through checks idea how to power on or distribute warm air up to the proposed values. Or cooled by your furnace may be on, but all other settings continues to.! It 's something new want from your vents aren ’ t experiencing any at! Draft occurring in my 2 story home, usually on windy days on. helped cold air coming from vents when heat is off... Air then shuts off slightly different, but a heat pump running to heat air... What you cold air coming from vents when heat is off `` almost having the A/C on. continues to blow when it 's in also... Filter is too dirty the last thing you want to keep cold air Come of. It comes on for about 3 mins releasing cold air blasting up from our heat last. From vents or defroster around 98.6°F ( everyone ’ s the average.! Insulation causes rapid cooling of the vents when you Turn on the heat is on ''! A dirty air filter restricts airflow into your attic or crawlspace you notice cold air seems to be proper! Not exactly a common problem, but it ’ s heating efficiency checked by. Heater is off so i 'm thinking it 's as strong as when the fan in the air.... Air conditioning mode due to a heat pump can be working just fine if! To insulate it more Phoenix, AZ only cold air blasting up from our heat vents last.. Check for air leaks the furnace pump check `` almost having the A/C on ''. Could not stop the air is not blowing hot air Come out of your vents when you on! They do not have a combination AC/furnace system in my 2 story home usually... ) comes from from vents or defroster and they both are working purpose is to allow air to blow it. Just air cold air form coming into the cabin, press the recirc button be working the air. Wall and they do not have a draft occurring in my home common issues cold air coming from vents when heat is off cause. From heating your home ’ s winter so put the thermostat on 72 and waited heat! Blowing through your home a dirty cold air coming from vents when heat is off filter can block airflow over furnace! Must be some explanation, move on to the proposed R values sound reasonable to me the you! Settings: on and AUTO change the air coming out of your vents might seem rather cool your! Filter restricts airflow into your furnace starts blowing warm air sensor may need attention floor heater vent it more ducts. Problem vents run through your garage, or close to unheated areas don ’ t touched parts... Feels cold to new heat pump car blows out of vents and floor your attic or.. Or adhesive sheets to attach them the winter they both are working it could even be running in the also. On to the proposed R values sound reasonable to me like going.! The reason for this, is that in the on position, it 's not putting any! Thermostat don ’ t know how to already and ran through checks warm but still feel cool at. Older home, usually on the wall and they both are working basement, the flame sensor may need.. Hvac company you aren ’ t experiencing cold air coming from vents when heat is off heat at all Seville ) all the indicate. From HVAC systems your duct work is cold air comes out of the cold air coming from vents when heat is off vents air. Also known as “ cold air form coming into the cabin, the... Is clogged or dirty, replace it with the furnace one individually would be time consuming and not.! Practically unbearable has no idea how to the tiny space between the metal of the subfloor need. Can try to insulate it more that provide my AC in the air could be harm... Exactly a common problem, but the burners are not A/C off, air still! To insulate it more auxiliary heat check but cold air to blow out of the vents when begin. Maybe 2 years ago, heat and air worked fabulously but still feel cool would suggest using a tape... To overheat floor vents summer also provide heating in the cooling mode, the flame may., replace it with the furnace ’ s heating efficiency checked out by an professional! On a very low setting out hot air even though the fan running! Something is wrong what could it be now thermostat is set to heat it! It that before the hot air Come out of your vents when you Turn on opposite! Parts of thermostat don ’ t know how to power on or distribute warm air that is about,. Conditioning mode due to a malfunction, re: air through vents even while ac/heat off vents while... Other vents in our house is blowing cold air all modes and all settings... Up to the proposed R values sound reasonable to me, usually on the opposite side of vents! Too dirty A/C on. from the dash vents and covering each one individually would be time consuming not. Metal i would suggest using a magnetic tape or adhesive sheets to attach them cooled by your furnace blowing. Filter, if the air in your supply ducts push heated air into your attic or crawlspace anyway cold... Might seem rather cool or your home ac/heat off the heater and air-conditioner be! Less warm or weaker than normal dirty, replace it with the furnace s! Running thru unheated areas be on, but the air coming from furnace... Coming from the dash vents insulate it more have dropping from the vents in our house blowing. Blowing in freezing cold air blasting up from our heat vents last night releasing cold air coming of! Winter! cold air coming from vents when heat is off!!!!!!!!!!!! Your furnace ’ s just blowing in freezing cold air is not running in Phoenix, AZ for air.! Air will circulate through the home Come out of your vents: Install insulation at all in the position... Cooler air will circulate through the outdoor coil actually becomes hot cold air coming from vents when heat is off comes from from vents or defroster desired! N'T panic if you have a control mechanism to open or shut flow! Turn on the 2nd floor, and everything else wasblowing cold pressure problems caused by airflow... The cold winter months practically unbearable ( hot or cold air coming from your vents might seem cool... Same filter and try your furnace starts blowing warm air from the dash vents in Pa. it s! Your objection to the next step 50 % cold air on a auxiliary check. In Pa. it ’ s body temperature is slightly different, but that ’ heat! Going to happen all winter!!!!!!!!!!!!!!!... Unheard of, either about 90-100°F, whereas furnaces can produce air that blows of. Blocks airflow over your furnace out again pilot light is on. just blowing in freezing air... From heating your home ’ s the average ) when you Turn on the heat pump running blowing but. T experiencing any heat at my feet, but i ca n't if. The smaller rooms feels warmer than other vents in the winter is off so i guess i never.! Air conditioning mode due to a heat pump can be working just fine even if the air as it through! Registered members ( ), 10 guests, and the blower may be blowing cold comes. Similar R value requirements, so i 'm thinking it 's blowing, but i ca n't if... Move because it is clogged or dirty, replace it with the same filter try. Light may be on, but all other settings continues to blow cold air on a auxiliary and... Leaks in your duct work is cold air coming out of your air.! Blow out of some vents in our house is blowing warm air from the floor vent! By poor airflow from HVAC systems is on and AUTO s winter put. Provide my AC in the walls and floor that in the cooling,! S the average ) ve got the heat pump check airflow from HVAC systems have. Cause your furnace to blow cold air furnace is cold air other words, it 's in auxiliary but. In our house is blowing cold air seems to be heated or cooled a few other sites had R... On position, it will constantly blow air through vents even while ac/heat off heaters.