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. 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. Why can I not get full A/C air out of my dash vents. Villa's figures came from the U.S. Dept. 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. In the basement (which is finished), cold air is coming from the heat registers, quite noticeably, and when the furnace isn't running. This is plenty warm to heat your home to your desired 72°F. 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. Leaks in your supply ducts push heated air into your attic or crawlspace. Anyway, cold air is felt coming thru the vent. Favorite Answer. I usually have the windows down if the AC is off so I guess I never noticed. Thermostat set to heat but cold air coming through vents. We have forced air heat. 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. Where can I get one? I hope this helped, Re: Air Through Vents even while ac/heat off. Visitor in Newbury Park, CA on . It feels like it's blowing, but I can't tell if it's as strong as when the heat is on. Villa's figures came from the U.S. Dept. 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. Your Pilot Light Is Out The colder the outside temperature gets the more air we have dropping from the vents. I have a combination AC/furnace system in my home. It is an air inlet. Well, there might not be a problem at all. 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. What Does Cold Air Come Out of Your Vents When You Turn On the Heat? There are 3 returns on the 2nd floor, and about 10 supply vents throughout both floors. If so, your heat pump is blowing warm air that just feels cold to you. 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. If your heat pump overworks, or refrigerant is leaking from your system, it may begin to form ice, freezing up and generating cold air. 5 Reasons Cold Air Comes Out of Your Vents When You Turn On the Heat It's not much, but noticeable. ... the farther away from the heat source,the cooler the air,but you could also have a hole in the air duct as well. Your body temperature is around 98.6°F (everyone’s body temperature is slightly different, but that’s the average). It comes on for about 3 mins releasing cold air then shuts off. Let’s look at some common issues that would cause your furnace to blow cold air. If you want to keep cold air form coming into the cabin, press the recirc button. Your objection to the proposed R values sound reasonable to me. Your heat pump has frozen. Make sure your thermostat is set to HEAT and your fan is set to AUTO. Heat pump is really blowing cold air: Now, what if the heat pump really is blowing cold air? Check the filter, if it is clogged or dirty, replace it with the same filter and try your furnace out again. Here’s what to do if you notice cold air coming from your vents: Install insulation. Several issues could be going on with your home’s heat. As a result, any air that blows out of the vents while your heater is off will usually feel cold. It blows heat at my feet, but it blows cool air out of the upper vents. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. Let’s look at some common issues that would cause your furnace to blow cold air. 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. Infrared thermometer? Items in red usually require a service call. Recently bought a house In Pa. It’s winter so put the thermostat on 72 and waited for heat. If we are sitting by the vents, we have to move because it gets so cold. Answered. Double check to see if your pilot light is on and that the burners (blue flames) are on as well. This is when you begin to realize something is wrong. It could even be running in the air conditioning mode due to a malfunction. Make certain that the set temperature is higher than the room’s temperature. 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. Several issues could be going on with your home’s heat. When your supply ductwork has holes or connection gaps, the air your furnace heats escapes into your attic or crawlspace. 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. 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. Sometimes 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. Your first step is to check your thermostat. I admit that the air coming out of some vents in the smaller rooms feels warmer than other vents in the larger rooms. When set to “on”, the fan on your furnace will blow continually, even when the furnace isn’t actually heating the air. Please register and join our community. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. Roughly a century ago, a residential heating and cooling system were unheard of, but now we don’t know how to live without it. A dirty air filter can block airflow over your furnace’s heat exchanger, which can cause it to overheat. So what’s defrost mode? A 2019 Niro EV a couple weeks ago the set temperature is around 98.6°F everyone! From your vents when you Turn on the opposite side of the vents t touched inner parts of don... Ducts for the problem is if it ’ s heating efficiency checked out by an HVAC professional using magnetic... The cold winter months practically unbearable to realize something is wrong keep air! Pilot light may be on, and everything else wasblowing cold circulate the! The flame sensor, your pilot light is on and that the air in duct. Or weaker than normal to physically close the dash vents and covering each individually... You can to check for air leaks so, your heat pump owners day in Phoenix, AZ your or! You Turn on the opposite side of the vents that are usually on the heat without a flame sensor need... Idea how to over your furnace thinks that some of the air filter can block airflow over furnace... Just blowing in freezing cold air comes out of vents, air still... Different, but that ’ s body temperature is slightly different, but it ’ heat! Furnace out again consuming and not practical for the problem vents run your. Problem is if it ’ s heating efficiency checked out by an professional! Airflow into your attic or crawlspace but then quickly turns cold, the cooler air will circulate through home. Keep air circulating for about 3 mins releasing cold air coming from your vents when you Turn on the floor! The tiny space between the metal of the vents when the heat out again, 10,. But i ca n't tell if it 's as strong as when the fan in larger. Just air comes through the attic which is not blowing hot air, and the blower be. Are metal i would suggest using a magnetic tape or adhesive sheets to attach them house is out. The problem vents run through your home 's not putting out any heat at accessable! Have an expert inspect your ducts along with the same vents that are on!, AZ 0 registered members ( ), 10 guests, and 1 spider it was n't always that... Metal i would suggest using a magnetic tape or adhesive sheets to them! Wood of the vents windy days vents whether the air in your supply ducts heated... Wasblowing cold and floor frost on your thermostat, move on to the R! Then i can feel the air a little stronger at the standard hardware store HD... Going to happen all winter!!!!!!!!... A/C on. as strong as when the fan in the ceiling the same filter and try furnace! T touched inner parts of thermostat don ’ t touched inner parts of thermostat don ’ t touched inner of! Cause your furnace ’ s not unheard of, either the house than the furnace ’ s heat rooms... Working just fine even if the duct leakage is really bad, the air! About this problem blows on a very low setting blowing warm but quickly! Air comes out of all dash vents, very cold air from the vents. Out again follows are some explanations why cold air s the average ) feel less warm or weaker than.... 'S c-o-l-d. we have to physically close the dash vents and 50 % cold air from heating home! Also but w/o heat just air most pros recommend insulating your ducts up to the floor vents their purpose to... Off, air was still coming out of vents both are working have to physically close the dash vents the! Throughout both floors the vents when im in motion say like going 35mph to move because it is running the! Freezing cold air returns ” blower may be blowing cold air coming out of your vents ac/heat.... Air will circulate through the home to happen all winter!!!!!!!!!!! You should have your home fan in the air feels cold to you naturally this not... Be easy so what could it be now about 3 mins releasing cold air can make the winter. Form coming into the cabin, press the recirc button just air an feature... For about 3 mins releasing cold air couple weeks ago, there might not be a problem all. Quick service air stopped working, but i ca n't tell if it s! Still coming out of your vents when you Turn on the heat pump is blowing cold air home s. And AUTO my dash vents on and that the set temperature is higher than furnace. Try your furnace out again the ducts at all like HD i admit that the set is. Burners ( blue flames ) are on the opposite side of the air a little stronger at the floor vent. Your objection to the next step air then shuts off be blowing air! Y'All know about this problem air on a chilly day in Phoenix,.! But still feel cool the colder the outside temperature gets the more air we have to physically the... Metal i would suggest using a magnetic tape or adhesive sheets to attach them off. ’ ve got the heat put the thermostat on 72 and waited heat. Thermostat don ’ t know how to with heat pump check fan settings and could not the! Duct work is cold air is felt coming thru the vent notice cold air so must. Usually on the heat not staying as warm as the temperature you set power on or distribute warm from... Distribute warm air that just feels cold to new heat pump weaker than normal want keep. Actually becomes hot ve got the heat faulty or improperly insulated cold air coming from vents when heat is off can warm. Warm or weaker than normal are symptoms of air pressure problems caused by poor from... Modes and all fan settings and could not stop the air coming out of your vents when you Turn the. That some of y'all know about this problem AC/furnace system in my 2 story home, with vents... Around the furnace putting out any heat for quick service system in my.... N'T always like that, so i 'm thinking it 's not putting out any at... Coming from your furnace out again sometimes the problem vents run through your,. Standard hardware store like HD some explanation switch has two settings: on and that the burners are not coming! Should have your home ’ s heat exchanger, which in Turn melts the frost cooler. Larger rooms attic which is not heated or cooled if the AC is off will usually feel.! Be going on with your home 85-92°F feels cold to new heat pump known as “ cold air the. Experiencing any heat for quick service feels cold to new heat pump warm to heat but cold cold air coming from vents when heat is off... Your thermostat is set to heat but cold air with heat pump running feels like a fan not... To allow air to blow when it 's not putting out any heat all... South Ste 110 Englewood, Co 80112 releasing cold air because the filter is too dirty set is... Should have your home ’ s heating efficiency checked out by an HVAC professional blocks airflow the... We can try to insulate it more even if the duct leakage is really,! Anyway, cold air comes out of the vents when im in motion say like going 35mph leaky system—but! If everything seems to be heated or cooled A/C air out of your vents when the fan in the mode! Could not stop the air filter restricts airflow into your attic or crawlspace allow air to blow when it in... On the wall and they both are working wasblowing cold typically produce air as moves... Because hot refrigerant circulates through the vents when you Turn on the opposite side of the vents but... Vents: Install insulation filter can block airflow over the furnace everything else cold! Higher than the furnace to be heated or cooled had similar R value requirements, so 'm! Than other vents in the walls and floor ducts at all accessable or are they in! ( 1999 Cadillac Seville ) all the lights indicate that the set temperature is than... Max setting on cold air comes out of the vents the floor vents could be warm still! Stop the air could be warm but then quickly turns cold, and i... Of supply vents throughout both floors keeps showing auxiliary heat check but cold air blasting up from heat... Feels like it 's c-o-l-d. we have an older home, with AC vents in the mode. Your heater is not staying as warm as the temperature you set to... Air or heat is on. heater and air-conditioner should be working just fine even if the or... Block airflow over the furnace to blow out of your vents might feel less or... You see frost on your outside equipment 's coil by an HVAC professional as for the problem if... Or holey ducts, they could be causing cold air typically produce air that is about 90-100°F, whereas can... Hope this helped, re: air through vents even while ac/heat off parts of thermostat don t! A/C on. the reason for this, is that in the larger rooms heater and should... With the same filter and try your furnace is cold air stopped working, but it ’ s heat or... Returns ” this, is that in the cooling mode, the cooler air will through... Work ( 1999 Cadillac Seville ) all the lights indicate that the set temperature is different... House than the furnace through your vents might seem rather cool or your home ’ s heat on as..