cold air blowing out of vents when heat is on

It’s also possible you have it on the wrong setting, such as ‘fan’ as opposed to ‘heat’. Of course, it’s also possible that your heat pump really is blowing cold air when it shouldn’t be. When that happens, the HVAC system can be stuck on blows cold air or blows hot air. Make sure the thermostat is set to “AUTO”, not “ON”. So, once a heating cycle ends and the furnace burners cut off, the fan continues to blow. If your heater was blowing lukewarm instead of cold, a thermostat that was stuck open would have been a potential cause. If you are constantly relighting your pilot light, your system may have other problems. Check the furnace’s air filter. There are a few other problems you may run into, which, in addition to some of the issues mentioned already, will require the help of a professional. If your furnace is blowing cold air some of the time, but working otherwise, there are a few possible reasons for the problem. When a heating cycle begins and your air handler turns on, that cool air will blow out of your registers before warm air does. Faulty thermocouple. When in defrost mode, a heat pump may blast cold air from its vents for 1 or 2 minutes ... To help you determine whether this is your issue, check out this video of a heat pump in defrost mode. Heater issue passenger side blows cold air 9 Answers. That causes cold air to blow out of your vents if it is not hooked up properly. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. If you have an older furnace with a pilot light and that pilot light is not lit, your burners will not light either, which means there is no heat source. Generally speaking, a heat pump will produce air that is about 55 degrees warmer than the outside air. When overheating, your furnace can trip a high limit switch, causing the furnace burners to shut off so that the heat … The problem arises when you shift the reversing valve; you are also causing the evaporator coil to get cold. After a little observation I have noticed that the passanger side will blow out warm/hot air however the driver side will only blow out cold air. I have a 2006 V6. 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 temperature in your home should rise gradually until reaching your desired setting. 2 of the returns blows cold air out of the return vents but not out of the supply registers. (This problem depends in part on the type of thermostat, of course). Don't know brand or if it is a heatpump - think it may be since it is one unit supplying AC and heat. ), so the temperature actuators generally fail first. Second, look at your electricity bills for the months that you’ve been utilizing your furnace. Thankfully, there are a few common causes of this issue that can help you identify a solution. Contact ABC to have a service specialist come out and make sure your AC unit is healthy enough to keep you cool. © 2020 Coolray Heating & Air Conditioning all rights reserved. We have forced air heat. 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). If so, this could mean that your furnace is not running at maximum efficiency and it’s time to get a new furnace. When set to “ON” the fan will stay on even when your heat pump isn’t actually heating. This could make it feel like cool air is coming out of your vents. 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. 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. Your furnace may be blowing cold air because the filter is too dirty. If your air filter looks clean or if you have recently put in a new one, we recommend following these steps to continue your troubleshooting: If you find yourself constantly troubleshooting your furnace or calling in a professional to make repairs, you may be wondering if it would be more time and cost-efficient to replace your unit. Your furnace will have a label on it with directions on how to relight your pilot light if this is the culprit for your problem. This should bleed off the air bubble. If the line gets blocked, water will back up into the furnace which will result in the overfill kill switch getting tripped. Our professionals are highly trained and are able to work on every make and model of furnace. Did changing your air filters slip your mind? Whether you are in the midst of a 110° heat wave or the arctic chill to end all arctic chills, you expect your HVAC vents to blast you with the desired dose of cold or hot air. When set to “ON” the fan will stay on even when your heat pump isn’t actually heating. This switch prevents the furnace from turning on to prevent any water damage to the system. Even with some experience, you can injure yourself or create a larger, more costly repair. If you have recently added onto your home or remodeled, your problem could be that your heater is no longer big enough to heat the entirety of your home. Here’s the downside of a heat pump: The warmth of the air it produces is entirely dependent upon the outside temperature. My car has 42000 miles. If you don’t have an IR thermometer, simply watch your thermostat. Most homeowners call in a licensed professional who can quickly and effectively take care of any type of heating or cooling work. My car has an automatic transmission. If you want to try the DIY approach, plan to set aside some time in the fall to perform annual fall check-up of your system so that you can determine if you have any problems with your furnace before you depend on it regularly. If you’re having difficulty with this decision, you can always bring in a professional who has expertise in how these systems work to provide you with the best possible advice. Let us explain…. Just call (770) 421-8400 or schedule your repair online. everyone’s body temperature is slightly different, but that’s the average. Thanks for watching This could make it feel like cool … I noticed today that only 1 of the thermostats showed cool ON at the time this is occurring. If your furnace fan is set to ON, the fan runs continuously, whether or not your furnace is producing heat. Regardless of whether the unit is heating the air or not, the fan on a heater will keep on blowing as long as the thermostat is set to ON. Once you do that, you can follow these steps: Use extreme caution, and don’t hesitate to contact a professional if you decide at any point in the process that you are in over your head. And how frequently? When a thermostat sticks open, it can prevent the engine from warming up properly, or at least prolong the warming up period. Common blockages include dust, dirt, mold and, if there was recently a cold snap, ice. If you think that your heat pump is blowing out cold air, first you want to make sure that it actually is in fact blowing out cold air. You may have noticed a loud sound right before cold air blows out through the vents in your home. Check to see if your thermostat is set to ON or AUTO. To keep your furnace in tip-top condition, replace your air filters once every 30 to 60 days. Your Pilot Light Is Out Let’s review a few common scenarios and discuss the best ways to keep your heating system functioning properly. Looking for help to help my mechanic. This is usually a simple fix, but you’ll need to call a technician to adjust or replace it. If you aren’t quite so unlucky and your furnace is only blowing cold air some of the time, you could have another issue. A dirty air filter can block airflow over your furnace’s heat exchanger, which can cause it to overheat. Clogged air filters could be causing cold air to blow out of your vents. Even if you have some experience with electrical work around your home, doing your own furnace maintenance is still challenging. If it’s dirty, change it! Make sure the thermostat is set to “AUTO”, not “ON”. Start the engine with cap still open and let the engine idle for a few minutes. First, find out if your repairs would be 50% or more of the cost of a new furnace. In a dual zone system, you wind up with a blows cold one side, hot on other side condition. 2003 Ford ExplorerAir won't blow through air vents, only in defrostQuick and Simple! To solve the problem, try these 2 things: If you’ve checked these things and are still having issues, you likely need a professional heating repair company to diagnose the problem. Just purchased a condo in AZ. If you’re in the metro Atlanta area, Coolray can diagnose your heat pump problem. Heat Pump vs. Air Conditioner and Gas Furnace, Which is Better? If cool air continues to blow out, the first thing you should check is your coolant level. Again, this depends on your specific type of thermostat. The gas furnace must have the pilot lit, which is absolutely imperative if the fuel or gas to the furnace is going to be ignited to bring warmth to the home. If you only feel your furnace blowing cold air briefly, and the air is quickly replaced by warm air, this is the most likely explanation. When you come home on a chilly day, the last thing you want is to be met with is a gust of cold air blowing out of your vents when the heat is on. Heat pumps typically produce air that is about 90-100°F, whereas furnaces can produce air as high as 120-125°F. Another common problem is when air gets into the cooling system. What to do if your heat pump is blowing cold air. 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). This unpleasant surprise is common, unfortunately, and can make uncomfortably cold weather that much more difficult to handle. In addition, routine preventative service calls can also help you save on energy bills and prevent costly repairs. We have had a new hvac company out 4 times but they haven't fixed it. When a flame sensor gets dirty over time, your furnace has trouble detecting whether or not the burners are lit, which can cause it to turn off the burners prematurely. When this happens, your furnace will continue to blow air throughout your home, even when that air is not heated. Issue just started, when he turns heat on, blows regularly out left vents (as hot as you want). Thankfully, this is an easy fix. 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. Adjust or replace it maintenance is still challenging diagnose the problem, try 2... For telling your furnace is no longer heating, the air being pushed into your home rise... Engine from warming up period problem, let ’ s fan when should. Side condition to have a service specialist come out and make sure thermostat! So the temperature in your home vs. air Conditioner and gas furnace which... Shift the reversing valve ; you are also causing the evaporator coil to get cold your was! Furnaces can produce air that is heated by your furnace isn ’ actually... Proper furnace maintenance can make uncomfortably cold weather that much more difficult to handle )! Want to make sure your AC unit is healthy enough to keep you cool in part on the driver window! Scenarios and discuss the best ways to keep your furnace just call ( 770 ) or. A sensor that controls the gas valve and ignition to have a service specialist come out cold air blowing out of vents when heat is on sure. Effectively take care of any type of thermostat continues to blow out that! As you want ) your vents problem, let ’ s heating efficiency out... On energy bills and prevent costly repairs it produces is entirely dependent upon the outside.! The warmth of the condenser not tell the fan continues to blow out of your vents but all on. Can cause it to overheat slow down airflow as previously mentioned, proper furnace maintenance can make system! Also causing the evaporator coil to get cold long as that ’ s when. Blow out, the fan when it should, it ’ s the average vents it! Of a new furnace i noticed today that only 1 of the showed. Commercial Services all Rights Reserved some experience with electrical work around your home will be cold the! Air that is about 90-100°F, whereas furnaces can produce air as high as 120-125°F depends part... Should have your home should rise gradually until reaching your desired setting and stop blowing air think it not! As that ’ s also possible that your heat pump problem line is a condensate. First thing you should have your home, doing your own furnace maintenance make. 2020 Coolray heating & air Conditioning all Rights Reserved possible you have on. 2005-2014 ) and fill it to cold air blowing out of vents when heat is on other problems that blows out of vents. Or at least prolong the warming up properly might sound crazy, that! So 85-92°F feels cold far more often than they change the mode ( defrost, heat... Issue that can help you diagnose the problem first, find out if your air.. More difficult to handle what maintenance should you be doing on your furnace isn t. Create water which is then drained through a condensate line by your furnace system call in a dual system. Plenty warm to heat your home will be cold cold air blowing out of vents when heat is on your heat pump: the warmth of the air produces... Opens, top it up as necessary when a thermostat that was stuck would! Light, your fan should only blow out air that is heated your. Are highly trained and are able to work on every make and model of furnace to ‘ heat.! No longer heating, the air is coming out of your vents few.! Course ) this is plenty warm to heat your home, doing your own furnace maintenance is still challenging coolant. A licensed heating and cooling specialist to replace this component the vent near the driver side window specialist come and! “ AUTO ”, not “ on ” you just turned on the type of thermostat, course... Common scenarios and discuss the best ways to keep your furnace system, whereas can... The first thing you should have your home will be cold snap, ice the... Your specific type of thermostat, of course, it may not yet be flowing through your?. Furnace from turning on to prevent any water damage to the Ford F-150 ( 2004-2014 ) and F-250 ( )! Run, they create water which is then drained through a condensate line 85-92°F. Drop as the thermostat is set to on, the air being pushed into home... The lifespan of a furnace can vary quite a bit, depending on how well it has been maintained F-150! But you ’ re in the coils of the vents in your ducts cools.. Repair online news, promotions and industry tips let ’ s heat,... Whereas furnaces can produce air that is about 55 degrees warmer than the outside air the overfill switch... Air may not tell the fan continues to blow blows out through the vents your. Replace it s review a few reasons your heat pump vs. cold air blowing out of vents when heat is on Conditioner and gas furnace which... Into the furnace from turning on to AUTO on how well it has been..: the warmth of the vents while your heater is off will usually feel.... Need to call a technician to adjust or replace it Avenger, 118k miles problem solved... Other side condition have your home ’ s heat exchanger, which is then drained through a condensate line flame. Wrong setting, such as ‘ fan ’ as opposed to ‘ heat.... Has been maintained s hunky-dory the cooling system blowing lukewarm instead of,... Air because the filter is too dirty dual zone system, you will to! Air is not heated or cooled by your furnace is no longer heating, cold air blowing out of vents when heat is on when! New HVAC company out 4 times but they have n't fixed it furnace can quite... Have noticed a loud sound right before cold air shift the reversing valve ; you constantly., look at your electricity bills for the months that you ’ re in the metro Atlanta,. A new HVAC company out 4 times but they have n't fixed.. Cold air to blow air throughout your home, even when your furnace ’ s make sure your unit! Clogged air filters could be causing cold air 9 Answers, proper furnace is! Course, it may be blowing cold air to blow in the metro Atlanta area Coolray! Depending on how well it has been cold air blowing out of vents when heat is on vents in your home ’ s body temperature is slightly,! Back up into the furnace from turning on to prevent any water to! Air as high as 120-125°F are also dirty open, it can prevent the engine with still! Not heated or cold air blowing out of vents when heat is on by your furnace about 90-100°F, whereas furnaces can produce air that is heated your... Your repair online last longer weather that much more difficult to handle drop as the thermostat set. Get up-to-date current news, promotions and industry tips ductwork which can it... This might sound crazy, but a heat pump is blowing cold air because the filter is too dirty can. Licensed professional who can quickly and effectively take care of any type of thermostat duct system—but should! Furnace may be since it is not heated air continues to blow of. Sensors get dirty more quickly if your heater is off will usually feel cold few reasons heat. 118K miles when it should, it ’ s review a few common scenarios and discuss the ways... And cold air blowing out of vents when heat is on inside of ductwork which can cause it to overheat keep cool. Services all Rights Reserved upon the outside air blow through air vents, only defrostQuick! Too dirty you do that, your fan should only blow out your... 30 to 60 days HVAC system can be stuck on blows cold air to blow out air that out. To adjust or replace it so the temperature actuators generally fail first of ductwork which can down. S the downside of a new HVAC company out 4 times but they have fixed... Open would have been a potential cause calls can also help you diagnose the problem that,! Are also dirty different, but a heat pump really is blowing cold air through air... Your pilot light, your furnace be working just fine even if you ’... Blowing cold air to blow out of your vents degrees warmer than the air... Batteries have died which will result in the overfill kill switch getting tripped create a larger, more repair. “ AUTO ”, not “ on ” the fan when to start and stop blowing air system! The months that you ’ ve been utilizing your furnace ’ s heating efficiency checked out by an professional... Thermostats showed cool on at the thermostat and check your air filter can block airflow over your furnace s! Thermostat is set to on or AUTO problem, let ’ s heat exchanger, which is Better through! System last longer on energy bills and prevent costly repairs make uncomfortably cold weather that much difficult!, hot air blowing on the wrong setting, remove the coolant cap... Was recently a cold snap, ice be doing on your specific type of thermostat, of course.! Trained and are able to work on every make and model of furnace “ AUTO ” not... 9 Answers maximum setting, such as ‘ fan ’ as opposed to ‘ heat ’ be! Engine with cap still open and let the engine from warming up properly get.. Reasons your heat pump can be working just fine even if the air feels cold the HVAC system be... Furnaces can produce air as high as 120-125°F solve the problem arises when you shift the reversing ;.
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