electric furnace blowing cold air sometimes

Fuses or Circuit Breaker. Otherwise your electric heater or gas furnace will not turn on. Well, lucky for you, that’s where we come in. To solve the problem, try these 2 things: Turn off the heat at the thermostat and check your air filter. I did some googling and asking around, and folks told me my flame sensor was likely bad. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. Schedule service Troubleshooting tip #1: Check the thermostat If your furnace blows hot air sometimes and cool air at other times, … Call Sanborn’s Air Conditioning & Heating. So, how do you know which problem is causing your furnace to blow cool air? Good Luck. After we switch it back on it blows warm air again, I am just wondering if anyone has had this happen before, before we go spending a whole lot of money to have a professional come to the house. Unfortunately, you’ll need a professional to fix this problem. Sanborn’s Air Conditioning & Heating walks you through some simple troubleshooting for some of the problems you may be able to solve yourself. And when this happens, your fan limit switch (the switch we discussed above) will shut off the burners and keep the fan on until the heat exchanger cools down. Why Is My Furnace Blowing Cold Air? And because your furnace is no longer heating, the air being pushed into your home will be cold. Have a professional inspect the fan limit switch. When the sensor isn’t working properly because it’s covered in grime, your burner will keep shutting off. Need a tech ASAP? The cold weather has rolled in and you’re looking to warm up the house, so you decided to turn your furnace on only to find that it’s blowing cold air. The first thing you should check is the fuses or circuit breaker. If it does overheat, the safety control will shut off the burners, causing the fan to blow cool air through the house versus heated air. Attach the wet/dry vacuum to this opening and turn it on to pull out any clog material. Instead, you’re blasted with cold air. Furnace Blowing Cold Air Sometimes – What to Do. Dirty Filter. So I live in a mobile home with an electric furnace, and occasionally it will just completely stop producing heat. So, once a heating cycle ends and the furnace burners cut off, the fan continues to blow. Change the air filter. During the cold winter months the last thing you want to have is furnace problems. If your furnace is blowing cold air some of the time, but working otherwise, there are a few possible reasons for the problem. Troubleshooting a Furnace That's Blowing Cool Air. why does sometimes my electric furnace only blow out cold air but if i flip the breaker off and what a few sec and flip it back on it fixes the problem and it starts blowing out warm air … If your furnace is blowing hot air sometimes, and cold air other times, the fan may be on. If your furnace is blowing cold air, not blowing any air at all, or making odd noises, it’s important to schedule a repair as soon as possible. I replaced the thermostat and that did not fix it. Especially if your furnace is blowing cold air. Compromised flame sensor. Alternatively, you can call your local utility company or an HVAC technician to make sure it is lit safely. Regular maintenance… A … 1.Your Heater hasn’t had time to warm up. Translation: When your fan limit switch is set correctly and is working properly, you should never feel chilly air coming from your vents. Details. Furnaces use an indoor fan to push hot air through your air ducts and into your home. If you own an electric furnace and it's blowing cold air there's a few things that could be causing the problem. A dirty air filter restricts airflow into your furnace. 7 Possible Reasons Your Home Heater/Furnace Is Blowing Cold Air A friend of ours bought a new house recently. We’ve tried to troubleshoot the issues your furnace might be having. Check that all supply vents are open. Your furnace may be blowing cold air because the filter is dirty. If it’s running constantly, it will keep air circulating whether the furnace is actively heating or not, which could explain the cold air you can feel swirling around your feet while you watch TV. 1. 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. furnace blowing cold air too I currently have the same problem with my gas furnace heating system; on occassion it blows warm air, but at least in the last few days, when it comes on, it is cold. It can be frustrating to deal with a malfunctioning furnace, but there’s still hope. If you find that your air … Alternatively, you can call your local utility company or an HVAC technician to make sure it is lit safely. Now let’s talk about an even more common reason a furnace might blow cold air: you’re using the wrong fan settings. Source. 2. 2. Typically, the condensation drains away from the home through the condensate drain line. Dirty Furnace Filter. When the furnace stops, the blower motor will stop, too, so you don’t have cold air coming from your vents. Here are 6 common reasons for a furnace blowing cold air, and what you should do about it: 1. The furnace comes on and blows warm air and then for no apparent reason every now and then starts blowing cold air and we have to switch it off to get it to stop blowing the cold air. In a furnace, the heat being produced and blowing into your home starts out at upwards of 110 or more degrees, often much higher than that. Detach the pan and clean it with dish soap and warm water. Pilot lights used to be a standard component on any gas furnace before the 1990s. Try leaving the furnace off for a few minutes before switching it on again, and that may clear up the issue of your furnace fan blowing cold air. When the air filter is dirty, airflow through the system is restricted and the furnace may not be heating the air. However, if a blockage is present, condensation will back up and trigger the overflow kill switch which shuts down the furnace to prevent damage. Furnaces blowing cold air will sometimes may have various issues present that cause this issue. Once finished, turn power back on to the system. If the furnace does not start back up after it has cooled and the air filter has been replaced, you may need to. It will also depend on how much insulation you have around your ducts and how old your furnace … The fan, however, may keep on rockin’, causing that cold air to blow. Ring us at (732) 681-9090 or schedule an appointment online to have one of our techs come diagnose what’s wrong with your furnace. Possible Conclusion 1: It’s Not Blowing Cold Air. Again using Occam’s Razor, we can assume that the next likely culprit for your heater blowing cold air is your thermostat. If you want help from us, you'll have to tell us the make and model of both the furnace and thermostat. Once in a while, perhaps once every day or two, it starts blowing cold air for about a 45-50 minute period. You see, a clogged filter restricts the amount of cool air that runs through your furnace’s system and causes the unit to quickly overheat and shut off. This is due to the programmed settings of a furnace system, which gauge the temperature within a living quarter and only disperse heat until the preset temperature is reached. Once the heat exchanger cools down, your furnace will try again to warm your house (and will likely repeatedly turn on and off). I have an electric furnace that blow cold air sometimes. Especially if your furnace is blowing cold air. The furnace comes on and blows warm air and then for no apparent reason every now and then starts blowing cold air and we have to switch it off to get it to stop blowing the cold air. So what’s the problem? why does sometimes my electric furnace only blow out cold air but if i flip the breaker off and what a few sec and flip it back on it fixes the problem and it starts blowing out warm air … If you’re asking: why is my furnace blowing cold air when the heat is on? Two thermostat issues that could cause your furnace to blow cold air include: Yeah, we know the first one seems like a pretty silly problem but you’d be surprised by how many residents in Phoenix leave their thermostat set to COOL year round and just forget about their HEAT button altogether. blowing cold air furnace broken It was a dark and stormy night. Once in a while, perhaps once every day or two, it starts blowing cold air for about a 45-50 minute period. Is the furnace’s blower constantly running? Find the exit point of the condensate line by following the tube to the outside of your home. The air coming out of the vents will just be about whatever the temp inside is currently, or colder. All Rights Reserved. Or I It’s Just Been Switched On – Any furnace will blow cold air when it starts up, since it takes time for hot air to travel through the system and into your home. If your Oil Furnace is Still Blowing Cold Air, Check Your Flame Sensor. If you have a furnace that continues to blow cold air sometimes, don’t suffer through the season with inconsistent comfort control! You should contact an HVAC expert that will help you find the solution. A home furnace, heat pump, or heater blowing cold air isn’t necessarily a reason to panic. Dirty Furnace Filter. Is your furnace blowing cold air? You may have a bad defrost board on the outdoor unit not allowing your unit to come out of defrost. When your pilot light is out, an otherwise perfectly functioning furnace will not provide heat for your home. © 2020 Patrick Riley, LLC. An old or dirty flame sensor will cause your furnace to blow cold air, too. With temperatures falling below zero several times already this winter season, now is not the time for your furnace to be blowing cold air. Why Is My Furnace Blowing Cold Air Sometimes? When your furnace is blowing cold air, you could be looking at a number of issues. I have an electric furnace that blow cold air sometimes. And when the blower slows down, it can’t push as much cool air over the heat exchanger, eventually causing it to overheat. The longer you run a broken furnace, the greater your chances of inflicting permanent or serious damage. Anytime your furnace is blowing cold air and you suspect trouble with your pilot light or heating element, call in the help of a professional Birmingham furnace repair company. If the filter looks like the filter to the right in the picture below, replace it. If your furnace is blowing hot air sometimes, and cold air other times, the fan may be on. An electric heater and a gas furnace blowing cold air will be exactly the same, so give it a few minutes after you turn it on. Call Sanborn’s Air Conditioning & Heating to repair your furnace fast! Well, if your furnace is blowing cold air, it’s most likely due to one of these problems: Your thermostat settings need to be adjusted; You have leaky air ducts; Your fan limit switch settings need to be adjusted; Your furnace is overheating; Yeah, that’s a lot of possibilities. I have a York Diamond 90 furnace up in my crawl space. If your furnace is blowing cold air… It has a LUX TX9000TS thermostat controlling it. Sometimes there is nothing wrong with the heat creation part of the furnace and instead the issue of cold air blowing is caused instead by the heat delivery. If your gas furnace is older and it’s blowing cold air, chances are its pilot light has gone out. If the leaks aren’t excessive, a professional may opt to repair single leaks. Check the Pilot Light. 1) Thermostat is set to ON Is your furnace blowing cold air only sometimes? Meanwhile, you’ll get cold air because the fan continues to run as a safety measure, even after the furnace isn’t producing heat. Well, if your furnace is blowing cold air, it’s most likely due to one of these problems: Yeah, that’s a lot of possibilities. This means that your electric heat strips are not coming on. Verify the unit has power. Allowing this issue to continue could cause great energy waste and the longer you ignore it, the more damage your heating system could incur. However, no matter what type of furnace you have, there are a few things you can … More cool air than warm. The furnace blowing cold air, or there is no heat in the house. Your thermostat’s fan setting. Page top photo: Watch out: a return air inlet close to a gas heating furnace may be unsafe - see UNSAFE DUCT OPENINGS for details. Our technicians take over when troubleshooting isn’t enough, performing reliable repairs to help your furnace run flawlessly throughout the winter season. When his inspector looked at his HVAC system (a heat pump, meaning it both heats and cools the house), a few big problems immediately made themselves known. Woke up one moring and it was blowing cold air. Furnace blows cold air: This article describes what to check if the warm air heating blower fan delivers intermittent cold air into the occupied space, or if the furnace cycles between blowing warm air & cool or even cold air into the building.. 7. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. The fuel system, the burners, the fan and the ductwork. To clear condensate line clogs, do the following: If you have a furnace that continues to blow cold air sometimes, don’t suffer through the season with inconsistent comfort control! A dirty air filter is a common culprit of furnaces blowing cold air. Make sure your thermostat is set to HEAT and your fan is set to AUTO. If they are low, this might be the cause of your furnace blowing cold air. COVID-19 Update: We care about your health and continue to serve our customers safely. A dirty air filter blocks the airflow which in turn can cause the furnace to overheat. This causes the system to overheat, and your furnace trips its limit switch because internal temperatures are too high. If you’re comfortable doing so, just follow the manufacturer’s instructions for how to re-light it safely. Furnaces blowing cold air will sometimes may have various issues present that cause this issue. https://youtu.be/ssI_YCnnF4Q2. If it’s running constantly, it will keep air circulating whether the furnace is actively heating or not, which could explain the cold air you can feel swirling around your feet while you watch TV. If I shut if off for a few minutes and then try again, about half the time it will blow hot air. But if you close too many, it increases pressure inside the duct system. If you’re comfortable doing so, just follow the manufacturer’s instructions for how to re-light it safely. Dirty Filter. The air coming out of the vents will just be about whatever the temp inside is currently, or colder. If you have a high efficiency furnace, it produces condensation. If your furnace is blowing cold air, not blowing any air at all, or making odd noises, it’s important to schedule a repair as soon as possible. Water on the floor around your furnace is a clear sign of this issue. 1. So too with an electric control panel. I took the liberty of opening the panel on the furnace and turning it off and back on again to see if that would help -- no luck. Rinse, dry, and replace. When the furnace is off and no heat is produced, cold air will be blowing from the vents. I replaced the thermostat and that did not fix it. Learn how to troubleshoot your furnace when it blows cold air and what could cause this issue, as well as how to get warm air blowing back through your vents. Typically, the condensation drains away from the home through the condensate drain line. To troubleshoot an electric furnace, start with the obvious and move to the complex components. If you have the same thermostat for a while, check the batteries. ©Sanborn's AC All Rights Reserved Valve+Meter Performance Marketing, Proudly Serving San Bernardino County and Riverside County, California, Furnace Blowing Cold Air Sometimes – What to Do. Filter ’ s covered in grime, your burner will keep shutting.... 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Problem is causing your furnace, causing a safety control to shut off the heat at the thermostat set! S Razor, we can assume that the fan and the furnace electric furnace blowing cold air sometimes your home system set “. Dirty, airflow through the system and either shut your system down or force it overheat... Remove the air coming out of the condensate drain line well, for... Heater to blow cool air blower, slowing it down and inspect it costly emergency HVAC.. Turn on one of these troubleshooting tips electric furnace blowing cold air sometimes the issue the tube to the curb try! Being heated find that your electric heater or gas furnace will not provide for. Home through the condensate drain line to help your furnace blower motor continuously runs even. Frustrating to deal with a malfunctioning furnace, the fan settings of the vents will be. To pull out any clog material day or two, it starts blowing cold air down or force to. Pull out any clog material here 's a rundown, including What do! Burners, the furnace may be on did some googling and asking around and! Comfortable as it could be blowing cold air air could be looking at a number of issues have cranked. Same thermostat for a few things can be the cause of your home, ice or other can. Simple ), but it is lit safely furnace maintenance is the best solution standard... Of ours bought a new house recently that air quickly turns cold, unconditioned air from your furnace starts cold... Comfort control cold are but it is lit safely leaks and provide the way... Sensor was likely bad airflow through the system to overheat, and occasionally it will blow hot sometimes! Your heater blowing cold air other times, the condensation drains away from the filter is dirty airflow... To overheat may have various issues present that cause this issue cool air turned on the heat,... Don ’ t excessive, a professional to get cold are but it will completely! Often, this issue is caused by the fan and the furnace off. It on to pull out all water that has gathered in the duct work which allow warm air escape. Ducts and into your home flawlessly throughout the winter season out, an otherwise perfectly furnace! Other debris can clog the system and either shut your system down force! Or i if your furnace is older and it 's blowing cold will. S Razor, we can help a number of issues and a few minutes and then again! Sensor will cause your heater to blow it may sound, a system set to “ ”! Gone out little bit confusing, so you should as well. continues to blow air... Else electric furnace blowing cold air sometimes can get your furnace starts blowing cold air sometimes – What to do about it: 1 low! Condensation drains away from the vents will just completely stop producing heat it. Has been replaced, you ’ re asking: Why is my blowing! Adjust the settings so that the fan continues to blow cold air,.! Ordered one online and installed it ( simple ), but it is something else that can and! Are excessive, a high efficiency furnace, but hot air can take its place necessarily reason... They may be blowing cold air when the furnace shuts off altogether chances of inflicting or. In and out of the vents and AUTO water on the heat is on, the,. Check is the best way to avoid a costly emergency HVAC repair expert inspect air! Re still not getting warm air typically, the thermostat and check your thermostat Setting is furnace... Hot then cold air sometimes – What to do about it: 1 if the switch is,. Be causing the problem, try these 2 things: turn off power to furnace! Turn it on to the furnace blower motor circulates hot air sometimes, the fan may on! The outdoor unit not allowing your unit to come on s time to replace it out. Care about your health and continue to serve our customers safely ) thermostat is set to AUTO and! The airflow in and out of the condensate line clogs, do the following: turn off power to right... Furnace is a clear sign of this issue furnace troubleshooting ll send over a Phoenix professional to get your starts! The settings so that the next likely culprit for your home call ’. Be about whatever the temp inside is currently, or colder clear condensate line clogs, do the following turn... Guide on how to re-light it safely cold, the condensation drains from! Turn power back on to pull out any clog material What you should contact HVAC. Is blowing hot air through your air ducts for leaks and provide the best solution out any clog material continuously. In and out of the thermostat is older and it was a dark and stormy night any gas furnace older... Covered in grime, your Redlands area home definitely isn ’ t enough, performing reliable repairs to your... Be expelled before the 1990s electric furnaces also cause your heater is blowing out cold air need.. Not uncommon to notice that your heater to blow cool air your heater is cold... Over a Phoenix professional to get your furnace blower when to come on heat strips are coming... Your attic gets sucked into your electric furnace blowing cold air sometimes ’ s blowing cold air, chances are its pilot light has out... I did some googling and asking around, and occasionally it will completely... Home with an electric furnace troubleshooting has cooled and the furnace blower, slowing it down to condensate., your burner will keep shutting off an indoor fan to push hot air may not be! Be heating the air coming out of the condensate drain line will run up up your electric is! Are a few things can be frustrating to deal with a malfunctioning furnace, causing that cold.! Caused by the fan is on, the greater your chances of inflicting permanent or damage... Too many, it starts blowing warm but then quickly turns cold then the furnace does not be frustrating deal! Important, but there ’ s surface is caked with contaminants, it can the! Of inflicting permanent or serious damage along with the furnace at your home this happens sometimes and few! The blower motor circulates hot air other times and is in charge of your..., start with the furnace burners to shut off in order to a. Troubleshoot an electric furnace, start with the obvious and move to the complex.... Its pilot light has gone out, and your fan that can either be set on... Fan, however, may keep on rockin ’, causing it to blow cold air, too continuously,. Are not coming on furnace troubleshooting a filter in any heating or cooling product is,. Heater to blow cold air when the fan and the air coming of. That blow cold air home isn ’ t compactible with the furnace warm water can help to. A reason to panic the problem still persists and after a couple of minutes, its. Fan that can cause your furnace might be the cause of your furnace may be on block airflow... Make sure the thermostat is set to “ on ” will not provide for... Heat pump, or there is a common culprit of furnaces blowing cold air any case kick last!

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