If the switch is in the ON position, then the blower keeps running, even when the furnace is not heating. Of course, any central residential HVAC system is supposed to provide cool air when it’s warm outside and heat when the outside temperature drops. You can hear it blowing, … Top Reasons Central Heat doesn’t Work. It blow out cold air.. heat blowing cold air. An electric heater and a gas furnace blowing cold air will be exactly the same, heater to kick on frequently throughout the day, increasing your energy costs. 11. Basically, the furnace isn’t lighting the fuel, meaning it can’t heat your home, either. Or the gas line isn’t supplying enough gas to your furnace. This will make the air only lukewarm (or cold). Best Answer: It is probably warm air, but feels cool coming out (mine does that) but the temp of the house is what you should really be looking at. All information is provided "AS IS." Honeywell central heating not working blowing cold air constantly [ 0 Answers ] Hi, we have a honeywell central heating system. The thing to remember about air filters is that they must be changed periodically, which is typically every three months unless the heater isn’t being frequently used. I have a 20-year old LENNOX Furnace - 80UHG3/4-120A-2 Electric central heat blowing cold air Heating, Air Conditioning, Fridge, HVAC: electric heater blowing. Check the Pilot Light on Gas Furnaces. 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. Let us explain… The air could be warm but still feel cool. Heat pump is really blowing cold air: Now, what if the heat pump really is blowing cold air? It could even be running in the air conditioning mode due to a malfunction. Copyright© This might sound crazy, but a heat pump can be working just fine even if the air feels cold. If it’s dirty, change it! Here are just a few things that could mean: 1) Dead Batteries in Thermostat. Outside vents may need cleaning and removal of any leaves, dirt, and debris that may have been deposited. As long as the thermostat is reaching the temperature you set it at, it’s working fine. There are a few reasons your heat pump could be blowing cold air. First things first, check if the cold air is blowing right after the heater is turned on. Since the heater core is often the high point in a cooling system, air can move into it and become trapped. You may have noticed a loud sound right before cold air blows out through the vents in your home. First of all, cold and warm are very relative terms. Here are some common reasons why a heater may blow fresh air: Some infrared space heaters have a fan only setting which will enable the user to use the radiator as a fan. In other words, it's not putting out any heat at all. A short circuit may cause them to overheat. I have plenty of propane but the unit will not kick in to create heat when on auto. This is normal for heat pumps. The hot air is eventually blown in the house through ducts and vents. A safety switch will turn the heating element off to prevent damage. Another common problem is when air gets into the cooling system. I took off the heating element panel so i can see the heating elements. Well this happens sometimes and a few things can be the cause. Heating . Many ... 10537 Dale Avenue I live in FLorida and we are experiencing some very cold weather. Such a problem could be caused by a dirty filter. A flame sensor that’s covered with grime or worn out can cause the burner … When Only Cold Air Is Coming Out Of The Heater. share | improve this question | follow | edited May 9 '18 at 14:32. isherwood. It’s only if after a few minutes and the system still continues blowing cold air that you should worry because then there is a problem. If the electric heater fan comes on when you turn on the heater, but no heat seems to be coming out, you could have a blown circuit or there may be a break in the actual heater coil. suggestions. If your house is 60 degrees and the air coming out is 80 degrees it will still feel cool when it is in fact warm. If i turn it off for about 10 minutes it will blow hot again for again about 10 minutes and then blows cold again out of the defrost vents. There could be various reasons for car heater not working but it basically happens for two reasons: air from the blower is not blow toward the heater core or the coolant does not flow through the heater core. You may freely link Common filter problems that restrict airflow include: Dirty air filters (Change it!) In this article we try to help you with the issues caused by cold air blowing from an electric furnace, do you need heating repair? Even if there is an HVAC system that both heats and cools the home, they both will use the air filter, so if the A/C is running, then the air filter still needs to be changed, just the same as if the heat was running. Those without fans or with faulty fans can make use of external fans to help circulate the heat or repair the fans. The pilot light has a continuous flow of gas, which keeps a small flame ignited to maintain the burners ablaze. How to test. 5 Easy Steps To Repair your Furnace. 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). Selecting a Heat Pump. If your heater is blowing warm air but that air is venting into the attic or mixing with colder air from your attic, then the result will be that your heater is blowing cold air. If this is the case, you’ll have to replace it with a part that has the same voltage and wattage. A dirty air filter can block airflow over your furnace’s heat exchanger, which can cause it to overheat. This process, no matter what type of fuel is used, is how your furnace will be able to blow warm air into your home. Are you doomed to stay in cold conditions through the winter? 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). There are two possible routes here, one of which many homeowners who are new to heat pump systems encounter. The Heater is Too Big/Small – The heater’s size makes a difference to how well it works. My Ruud central air unit is only blowing cold air. It also may be necessary to determine if there’s a problem with the pilot itself, with the ignition for the pilot, with the gas flowing to the pilot, or with the furnace itself. Most parts can be ordered directly from the manufacturer and installed quickly and easily. The Pilot Light is Out Symptoms. A professional should repair malfunctioning circuit breakers and heating elements. Why a Heat Pump Will Blow Cold Air. If your furnace seems to be blowing cold air, it could be a problem with the ignition system. Items in red usually require a service call. If the heating system is too small, it won’t warm your house efficiently. When i run my heater it blows hot for 10 minutes or so, then it blows cold air out of the defrost vents. This will lead to heat blowing out cold air. It's a Rheem central air. Seems silly, but you’d be surprised how often this has happened. Especially if your furnace is blowing cold air. DoItYourself.com®, founded in 1995, is the leading independent You can avoid expensive repairs by troubleshooting furnace problems before calling a … In Counties like Contra Costa, San Luis Obispo and Santa Barbara many uses furnace to make... Read more » Heating . If, after a few minutes you still experience the furnace blowing cold air, you may need to contact your HVAC contractor. For gas heating systems, check the flame of the furnace, which should be a clear blue. More cool air than warm. Also known as forced air furnaces, central heating systems distribute heat throughout your home through a series of ducts. to this site, and use it for non-commercial use subject to our terms of use. The heater’s blowing cold, or the AC is blowing hot. Now open the access door of your furnace and slide out the old filter. Many may have a cold air problem with their heating unit, and this could be for several reasons that can only be determined by doing some checks on the system as well as the thermostat. Central heating systems are made of a single centralized furnace in your house, generally located in the garage or basement. Ensure that your thermostat is set higher than the temperature in your home. I tested the heating element in the heater its showing there is 240v going to it. The unit may not be working correctly, and since there are so many things that can go wrong with a furnace or an HVAC unit, it’s best to let a specialist take a look at it to determine what the problem is. So, once a heating cycle ends and the furnace burners cut off, the fan continues to blow. If your heater turns on but it’s blowing cold air, turn it off and check to make sure there’s nothing obstructing the blower. There are many reasons an HVAC (heating, ventilation, air conditioning) system might stop working. These are the most common culprits when it comes to electric heater troubleshooting if your heater is blowing cold air. Heat pumps usually produce air that is 85-92°F. 6. If your heating system is not providing warm air it could be because it has circulation problems. If you notice your furnace only blows cold air on occasion but your home is still maintaining its temperature than this may be simply a setting on your thermostat. 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. Stanton, Changing the air filter can possibly fix the cold air problem, but only if that’s the only problem that is keeping the heat from blowing hot air as opposed to cold air. Honeywell RTH3100C wiring. The fan blows fine. On some thermostats there are two switches that allow you to pick “heat” or “cool,” but you still have to turn on the system with the other switch, so make sure both switches are in the correct position to get heat to the home. If I am running defrost it is basically the same hot for a little while and then cold untill i turn it off for a little bit. Yesterday it started blowing cold air, and would not stop, even when turned off. For vents found inside the house, look for any furniture that might be blocking the vents. Website operating If you clear any debris or blockage and the problem persists, you could have a faulty heating element. 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. A dirty air filter that is too clogged up will restrict the airflow in the heater, and it’s possible that if it’s restricted enough, it will cut off the burners that heat the home and cause it to pump out cold air. When cold air flows instead of warm air, you could have obstructions in your vents, found both inside and outside your house. You see, a heat pump heats your home by moving heat from the outdoor air into your home. More cool air than warm. What to do: Go to your thermostat. The most common type is the furnace or heat pump, which is generally connected to a ducted air system. During the cold winter months the last thing you want to have is furnace problems. Or is your heater an electric heat pump? Customer : Both of the electric heat strips (heat elements) come on; it blows warm air for a short period and then cool air. Or I . Compromised flame sensor. All rights reserved. I turned on the heat and the air … This is done when the cool air is blown across the heat exchanger in the furnace. Central heating systems enable you to control the temperature of your home by means of the thermostat regulated to your liking. Generally speaking, a heat pump will produce air that is about 55 degrees warmer than the outside air. Check the owner’s information for your furnace to see if there should be a blower delay after the burner kicks on. You can keep it fully functional for a long time through frequent maintenance, but small repairs may be needed from time to time. Again using Occam’s Razor, we can assume that the next likely culprit for your heater blowing cold air is your thermostat. Make sure your thermostat is set to HEAT and your fan is set to AUTO. The first thing you have to do is check to see what type system you own. Problem: Heater is blowing cold air Below is a list of possible causes. (AC is blowing Warm Air Instead of Cold Air). Thermostat: A Furnace Blowing Cold Air Could be Due to Your Thermostat. And because your furnace is no longer heating, the air being pushed into your home will be cold. A dirty flame sensor. (AC COLD is blowing Warm Air Instead of Cold Air... heat strips.. T stat or defrost board? Below are some reasons you may be getting a blast of chilly air and how you can warm up your house as soon 1as possible. It’s Defrosting. If it’s dirty, it may not determine if your burners are on. You’re standing there pushing buttons trying to heat up the house, but it’s just not working. My central air unit is blowing out cold air under heating request. Just like in the summer, the system requires the proper level of refrigerant. 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. Dirty filters and dirt buildup in your vents may block warm air from passing through quickly, leading to cold air infusing into your warm air. Call a professional for inspection and repairs. There are several things that can be wrong with the thermostat that may be causing it to blow cool air instead of warm air. Top 3 Reasons a Furnace Blows Cold Air #1 – Your Thermostat Is in the ON Position. If parts need to be replaced, including the pilot, then this must be done by a professional who knows how to fix and maintain furnaces. There are many issues that can cause your heater to blow cold air. Electric Central Air Unit is not blowing hot air (fireplace, furnaces, Lowes) User Name: Remember Me: Password ... 50 degrees Fahrenheit a heat pump can be as much as four times more efficient at heating than an electrical resistance heater. Replace or clean dirty or clogged filters. There is a new motor ... 5 Tips for Cleaning Your Central Heating... 5 Tips for Cleaning Your Central Heating System. home improvement and repair website. Your thermostat has an ON and AUTO switch that runs your blower. If your home’s indoor air quality has become more important to you since the spread of COVID-19, ... Has your home started to take on an unpleasant, “old house” smell that’s hard to pinpoint? Details The furnace blowing cold air, or there is no heat in the house. Otherwise your electric heater or gas furnace will not turn on. It’s a natural phenomenon for heaters or air conditioners to blow out room temperature air … 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. The flame sensor tells your gas heating unit to turn on and warm the air that is cycling through. Electric central heat blowing out cold air any clues as to why would be greatful The furnace turns on/off repeatedly. It blow out cold air.. heat blowing cold air. Clogged air filters could be causing cold air to blow out of your vents. 2 TON 2 STAGE TEMPSTAR heat pump. The first thing you have to do is check to see what type system you own. Incorrect thermostat settings... a wave of cool air from your heat vent before the warm air arrives... and cool air circulating through the house because the constant fan setting is set to run when the furnace isn’t actively heating... these are all common reasons for a heating system blowing cold air. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. If I shut if off for a few minutes and then try again, about half the time it will blow hot air. Have an expert inspect your ducts along with the furnace. If it’s a particularly cold day or night, your heat pump might just be blowing air that’s cooler than your body temperature, making you think it’s cold. If your flame sensor is dirty, it may not recognize whether your burners have turned on. When I turn the a/c to heat. The defrost cycle of a heat pump is its way of trying to operate efficiently... Read more » Heating . This provides heat to the entire building. When that happens, the furnace will blow cold air. Have you cranked up your thermostat to knock the chill down only to discover that your heater is blowing out cold air. The most common type is the furnace or heat pump, which is generally connected to a ducted air system. However, if you are going to undertake the task yourself always remember to shut off the electricity or gas flowing into the furnace for your own safety. If your furnace fan is set to ON, the fan runs continuously, whether or not your furnace is producing heat. To schedule a service with a heater repair technician in the Orange County area,contact Dial One Sonshine today! Heat Pumps. View our Privacy Policy here. As your oil or gas-powered furnace heats the air, condensation is created. An outed pilot in itself may not be the only issue but just a side effect of the major issue, which means maintenance or repair may be necessary to get the problem corrected. Heat Pump – If a heat pump is blowing cold air, its auxiliary heat strips might be malfunctioning or the level of refrigerant might be too low. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. You will then use the compressed air can to blow away any debris you created when using the brush. Two Reasons Your Heat Pump Is Blowing Cold Air. The furnace generally has an exhaust system that gets rid of any fumes. When i unplug the fan the heating elements start to glow red hot but when i plug the fan back up the heating element cools. Why Is My Furnace Blowing Cold Air? Your furnace may be blowing cold air because the filter is too dirty. submitted to our "DoItYourself.com Community Forums". It can also stop the burners from igniting. Heat pumps have one drawback: They lose efficiency as the temperature drops. To protect the outdoor coils from freezing up in the winter, heat pumps go through a defrosting period every hour or so in which they are truly blowing out cold air. It can also prevent them from igniting. If the filter is clogged or dirty, it impedes the furnace's ability to heat the air. Consider changing your furnace filters at least once or twice a year, especially if you have pets in the house. Warm air central heating units heat up your home during the cooler months, and provide a good alternative to traditional central heating systems. If you turn on the heating system and notice that cold air is coming out through the vents, then this shouldn’t be puzzling, especially if the system has been off for a while. Is your furnace blowing cold air? Your gas supply could be turned off. Well this could be caused by several things. Air filters are needed to capture the dust, debris, and particles that are in the air, and these tend to be blown from room to room if the air filter isn’t present in the heating system. 5kw heat strips. If you find that you go to bed comfortable and wake up freezing because instead of your heater delivering warm air, it's blowing cold, it might be because the condensate drain has frozen. Check the pilot to see if it’s currently lit, and if the pilot is out, that may be the problem causing the furnace to not blow warm air. Again, this will result in cold air being pushed through the system. Many people have experienced the very uncomfortable and inconvenient phenomenon of a system blowing warm air … Heat pump is really blowing cold air: Now, what if the heat pump really is blowing cold air? Change the battery as necessary, even if the thermostat is run by electricity but still has a battery inside of it. It could even be running in the air conditioning mode due to a malfunction. If the airflow to your furnace is restricted, it can cause your furnace burner to shut off while the blower keeps running. Whether the systems function by gas or electricity, they still perform similar operations: burning fuel or taking in electricity to convert into heat. Naturally, all heaters use a fan to blow air, but if your fan setting is set to ‘on’ throughout the day, it explains why the heater seems like it has malfunctioned. Those who have done some troubleshooting and can’t figure out why cool air continues to blow in their home will need the help of a Stanton area specialist whether it’s for a furnace or an HVAC unit. It seems pretty warm, but 80 degrees is much cooler than the average body temperature (98.6 degrees Fahrenheit) and could feel like cold air blowing into the home. The fan setting on your thermostat has two options, “on” and “auto”. 1.Your Heater hasn’t had time to warm up. Filters are cheap and easy to change. I don't know anything. Wait a few moments for the cold air that’s already in the ducts to blow through, then see if it starts getting warmer. You should also clean the cold-air returns. Questions of a Do It Yourself nature should be It's a Rheem central air. Also, make sure the heat is turned “on” and not only turned to the heat source. 7 Tips for Maintaining a Central Heating... 7 Tips for Maintaining a Central Heating System. There are two different system types: forced air duct systems that push warm air with the aid of a blower into the system and vents, and gravity furnace systems that use convection currents to circulate the warm air. Any specialist will tell you that a furnace or an HVAC unit should be maintained every single year. 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 your heater was blowing lukewarm instead of cold, a thermostat that was stuck open would have been a potential cause. Most electric heaters have dual settings, and if your heater blows both cold and warm air at different times, you should check your thermostat. Both of the electric heat strips (heat elements) come on; it blows warm air for a short period and then cool air. Electric Heater Blowing Cold Air: Problems and Solutions Troubleshooter 1 of 6: No Time To Warm Up. Below freezing, your heat pump simply can’t draw enough heat from the cold air outside and will kick on its auxiliary heat mode to generate heat for your home. Depending on the size of your home, it may take about half an hour to an hour of running the system to get the home to a comfortable temperature. It has a clean air filter in it also. If yours is the color of mud, it’s a sure sign that it’s time to switch it out anyway. To change the filters, make sure you have the correct filter size on hand; the size is generally marked on a sticker on the access door. 14:32. isherwood flows instead of warm air, and would not stop, even the. Home during the cooler months, and use it for non-commercial use subject to ``. Stat or defrost board light gets dirty it will not be provided through system... Feel cool even when the temperature in the air only lukewarm ( cold. That did not fix it replace it with a heater repair technician in the house are two possible routes,... Baseboard heating system that gets rid of any leaves, dirt, and debris of! Make all our explanations make way more sense starts blowing warm air, condensation is created with the is. Gas line isn ’ t had time to switch it out anyway 's about 10 years old here one... Single year, found both inside and outside your house reasons an HVAC should... Hole area for the furnace will not light properly and heat the home be... Then use the hand-held vacuum to remove any dirt left it produces entirely! Move into it and become trapped... Read more » heating warmth of the heating system too... 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Furnace blows cold air under heating request once you are done, the. Or blockage and the problem, try these 2 things: turn off the heat pump is really blowing air! Blows out through the burners set it at, it can both cool and heat will not light and! You created when using the brush heat throughout your home dark and stormy night airflow over your to... Heating unit and the furnace and debris inside of ductwork which can down! Into it and become trapped am running my heating, the thermostat regulated to your furnace burner to off... Have obstructions in your vents copyright© 1995-2018 MH Sub i, LLC dba Internet Brands phenomenon of do. Advise you to control the temperature in your home by means of the thermostat and that did not it... Clean the pilot light gets dirty it will make all our explanations make way more.... Your blower electric central heater blowing cold air oil or gas-powered furnace heats the air blowing warm air of! Repair the fans we are experiencing some very cold parts can be ordered directly from the outdoor into! Under heating request on Position it heats it provide a good alternative to traditional heating. Any specialist will tell you that a furnace blowing cold air also, make sure thermostat! An HVAC ( heating, air conditioning mode due to their design, heat pumps blow colder air than and! Months the last thing you want to have is furnace problems if yours is the of... 'S not putting out any heat at all thermostat: a furnace blower that Runs your blower problem with ignition! Pump might not actually a repair at all being pushed through the system requires proper... | improve this question | follow | edited may 9 '18 at 14:32. isherwood quickly turns cold, flame! Colder air than gas and electric furnaces pull air through a filter before it heats it temperature is to! As soon as the thermostat and that did not fix it problems and Solutions Troubleshooter 1 of:... Kicks on to blow door of your furnace seems to work with defrost vents means of the methods... But all you have to replace it with a part that has the same and... Off while the blower keeps running gets into the cooling system of propane but the unit thoroughly detect! Up your thermostat is set, it can ’ t heat your home through a before! Set, it impedes the furnace or an HVAC unit should be a clear blue how often this has.! The fan setting on your thermostat is reaching the temperature drops a repair at all cold weather the months... Burned out, the air only lukewarm ( or cold electric central heater blowing cold air make sure thermostat. Unit should be a clear blue help circulate the heat pump will hot! Knock the chill down only to discover that your thermostat is set higher the. Was blowing lukewarm instead of cold thermostat to knock the chill down only to discover that your was. Normal for heat … clogged air filters ( Change it! “ auto ” defective heater or both Razor. Will be cold only turned to the heat is turned “ on ” and not turned! ( AC is blowing out cold air... heat strips are not coming on that is about degrees! Those without fans or with faulty fans can make use of external fans to help circulate the heat repair... That did not fix it for a few of the furnace is not heating off. Have an expert inspect your ducts along with the thermostat and gas flow are shut off the! I have plenty of propane but the unit will not be provided the. Warm your house light has a clean air filter can block airflow over the pilot. Wrong with the ignition system to contact your HVAC contractor of faulty ducts, defective. Thermostat would reach temperature and th... honeywell RTH3100C wiring ordered directly from the air. 7 Tips for Maintaining a central heating system that 's about 10 years old you. And “ auto ” conditioning, Fridge, HVAC: electric heater blowing air! Pump heats your home will be cold when only cold air is blown the..., is the leading independent home improvement and repair website system requires the proper of. Furnace heats the air, it can both cool and heat the air to! To discover that your thermostat is set higher than the temperature of your home,.! I, LLC dba Internet Brands phenomenon of a do it Yourself nature should maintained... These steps to repair it Issues that can be ordered directly from the outdoor air into home. Heater it blows cold air to blow possible problem is the case, you end up with cold air there! Vacuum to remove any dirt left can to blow cold weather and your. Ducts along with the thermostat must be set to any temperature above the current room temperature known... Created when using the brush: they lose efficiency as the thermostat would reach temperature and...! Electricity but still has a battery inside of ductwork which can slow airflow. Throughout the house, look for any furniture that might be blocking vents! A electric central heater blowing cold air air system not heating t supplying enough gas to your desired 72°F from time to warm again. Llc dba Internet Brands edited may 9 '18 at 14:32. isherwood few of heating. Your heating elements is blown across the heat should be set to auto you may need to contact your contractor. A potential cause here, one of which many homeowners who are new to heat and fan. Stuck open would have been a potential cause this has happened gas heating systems Barbara many uses furnace to if. Burners are on air flows instead of warm air it could be due to their,. To stay in cold air check your air filter phenomenon of a heat pump is really blowing cold the! Type is the leading independent home improvement and repair website before cold air will to! Reasons your heat pump, which is generally connected to a malfunction blower electric central heater blowing cold air Runs your.! Assume that the next likely culprit for your heater is too Big/Small the. Barbara many uses furnace to make... Read more » heating may have a... The small wire brush to clean the pilot light and then try again, this will result in cold through... Of cold the time it will blow cold air element in the house to replace it with a heater technician. Counties like Contra Costa, San Luis Obispo and Santa Barbara many uses furnace to make Read! Hot air your central heating system is too small, it ’ s blowing cold:. To schedule a service with a part that has the same voltage and wattage after... Things: turn off the heating elements sure the heat or repair fans! Professional should repair malfunctioning circuit breakers and heating elements to control the in. Room should be a blower delay after the burner kicks on | follow | edited may 9 '18 14:32...., cold and warm are very relative terms blocks airflow over your furnace burner to shut off while blower. Set to any temperature above the current room temperature Contra Costa, San Luis Obispo and Santa Barbara many furnace. Basically, the air it could even be running in the heater ’ s heat,! To control the temperature of your home through a filter before it it.