2. This causes the system to overheat, and your furnace trips its limit switch because internal temperatures are too high. Especially if your furnace is blowing cold air. If your filter gets dirty, it can block the airflow in the heat exchanger. We’ll send over a Phoenix professional to get your furnace back to normal operation. 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 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. 1. Sometimes snow, ice or other debris can clog the system and either shut your system down or force it to blow 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. 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. Your thermostat’s fan setting. But, if the switch is bad, they’ll need to replace it. We’ve tried to troubleshoot the issues your furnace might be having. 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. And when the blower slows down, it can’t push as much cool air over the heat exchanger, eventually causing it to overheat. It has a clean air filter in it also. You may have a bad defrost board on the outdoor unit not allowing your unit to come out of defrost. When the air filter is dirty, airflow through the system is restricted and the furnace may not be heating the air. When the thermostat is set to ON, the furnace blower motor continuously runs, even when the furnace does not. Your furnace may be blowing cold air because the filter is dirty. Source. 1.Your Heater hasn’t had time to warm up. Furnaces blowing cold air will sometimes may have various issues present that cause this issue. Restricted airflow can overheat your furnace, causing a safety control to shut off the burners. If you just turned on the heat, hot air may not yet be flowing through your air ducts. Change the air filter. When you have a furnace blowing cold air sometimes, your Redlands area home definitely isn’t as comfortable as it could be! Once in a while, perhaps once every day or two, it starts blowing cold air for about a 45-50 minute period. This usually results in a confused homeowner who thinks the cold air from their vents means there’s a problem with their furnace when really their HVAC systems are responding properly. Your furnace blows hot air but that air quickly turns cold then the furnace shuts off altogether. There are a few reasons your heat pump could be blowing cold air. The bad behavior is that about 50% of the time, I walk to the controlled rooms and the fan is blowing but the air is cold, and the temperature is far below the heater on set point, and the thermostat is visibly still calling for heat. If you have a furnace that continues to blow cold air sometimes, don’t suffer through the season with inconsistent comfort control! Electric Furnace Troubleshooting. Meanwhile, you’ll get cold air because the fan continues to run as a safety measure, even after the furnace isn’t producing heat. During the cold winter months the last thing you want to have is furnace problems. Your System Was Just Turned On. So here’s the situation: It’s a chilly night in Phoenix and you turn the heat on, expecting some warm relief. When you have a heating, air conditioning or indoor air quality issue in your home, rely on the professionals at Sanborn’s. If this is the case, you can simply switch the setting from "on" to "auto" and your problem should be fixed. There are four main components of a furnace. If they are low, this might be the cause of your furnace blowing cold air. 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. Typically, the condensation drains away from the home through the condensate drain line. Leaks in your ductwork means that cold, unconditioned air from inside your attic gets sucked into your ductwork. During the cold winter months the last thing you want to have is furnace problems. Check your air filter. Just contact us. Need a tech ASAP? Alternatively, you can call your local utility company or an HVAC technician to make sure it is lit safely. 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. Schedule service Troubleshooting tip #1: Check the thermostat If your furnace blows hot air sometimes and cool air at other times, … Funny as it may sound, a system set to “on” will not necessarily blow warm air. While it's blowing cold air, the thermostat calls for heat, but the furnace will not respond, even if I … 6. It’s not uncommon to notice that your furnace is blowing cold air sometimes, but hot air other times. Water on the floor around your furnace is a clear sign of this issue. This “hot then cold air” sequence happens over and over and your home isn’t warming up. 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. Woke up one moring and it was blowing cold air. 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. The fan blows fine. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. Well this happens sometimes and a few things can be the cause. 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. It will also depend on how much insulation you have around your ducts and how old your furnace … 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. 11. 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. That cold air mixes with the warm air from your furnace, causing the air coming from your vents to feel considerably cooler than it should. 2. Heater blowing cold air; Furnace won’t turn on; First, Check Your Thermostat Setting. How to test Pressure Switch! My electric furnace blows cold air, sometimes. I ordered one online and installed it (simple), but the problem still persists. Allowing this issue to continue could cause great energy waste and the longer you ignore it, the more damage your heating system could incur. Go to your thermostat. See our response to recent issues regarding COVID-19. Or I 2. Often, this issue is caused by the fan settings of the thermostat. A dirty air filter blocks the airflow which in turn can cause the furnace to overheat. to repair your furnace fast! Here's a rundown, including what to do about it. 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. If you have a high efficiency furnace, it produces condensation. 7 Possible Reasons Your Home Heater/Furnace Is Blowing Cold Air A friend of ours bought a new house recently. Is the furnace’s blower constantly running? Heat pump systems operate pretty differently than standard furnace systems. Well, lucky for you, that’s where we come in. Remove the air filter from the filter compartment and inspect it. Furnace Blowing Cold Air Sometimes – What to Do. There is a reason for this – it works! 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. If your filter gets dirty, it can block the airflow in the heat exchanger. It can be frustrating to deal with a malfunctioning furnace, but there’s still hope. 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. With temperatures falling below zero several times already this winter season, now is not the time for your furnace to be blowing cold air. Furnace Blowing Cold Air Sometimes – What to Do. 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. Why Is My Furnace Blowing Cold Air Sometimes? Have you cranked up your thermostat to knock the chill down only to discover that your heater is blowing out cold air. Why Is My Furnace Blowing Cold Air Sometimes? If you own an electric furnace and it's blowing cold air there's a few things that could be causing the problem. When this happens, a high limit switch will cause the furnace burners to shut off in order to avoid damage. A furnace blowing cold air is indicative of a problem. 2. 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. If the furnace does not start back up after it has cooled and the air filter has been replaced, you may need to. This would not cause you to get cold are but it will run up up your electric bill. I have an electric furnace that blow cold air sometimes. Once finished, turn power back on to the system. Fuses or Circuit Breaker. If your furnace continues to overheat and blow cold air after you replace the filter and open all supply vents, have a professional inspect the system for other issues. If your gas furnace is older and it’s blowing cold air, chances are its pilot light has gone out. If your furnace is blowing cold air… 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. When the furnace is off and no heat is produced, cold air will be blowing from the vents. Using a wet/dry vacuum, pull out all water that has gathered in the pan. Especially if your furnace is blowing cold air. Sanborn’s Air Conditioning & Heating walks you through some simple troubleshooting for some of the problems you may be able to solve yourself. When the fan is on, the furnace will continue to blow, regardless of whether or not the air is being heated. So, how do you know which problem is causing your furnace to blow cool air? Ensure that your thermostat is set higher than the temperature in your home. The air coming out of the vents will just be about whatever the temp inside is currently, or colder. When you have a heating, air conditioning or indoor air quality issue in your home, rely on the professionals at Sanborn’s. Your supply vents (pictured below) push warm air into your home. Typically, the condensation drains away from the home through the condensate drain line. The fan blows fine. It has a clean air filter in it also. 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 … Our technicians take over when troubleshooting isn’t enough, performing reliable repairs to help your furnace run flawlessly throughout the winter season. It then turns itself off, and after a couple of minutes, resumes its heating cycle properly. To troubleshoot an electric furnace, start with the obvious and move to the complex components. Is your furnace blowing cold air? If I shut if off for a few minutes and then try again, about half the time it will blow hot air. Now let’s talk about an even more common reason a furnace might blow cold air: you’re using the wrong fan settings. When your pilot light is out, an otherwise perfectly functioning furnace will not provide heat for your home. The furnace blowing cold air, or there is no heat in the house. However, no matter what type of furnace you have, there are a few things you can … If you’re asking: why is my furnace blowing cold air when the heat is on? I replaced the thermostat and that did not fix it. 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. Once in a while, perhaps once every day or two, it starts blowing cold air for about a 45-50 minute period. Sanborn’s Air Conditioning & Heating walks you through some simple troubleshooting for some of the problems you may be able to solve yourself. I have an circa 1991 A/C/heater forced air unit. If you find that your air … Otherwise your electric heater or gas furnace will not turn on. Heating systems are generally easy to maintain. Here are 6 common reasons for a furnace blowing cold air, and what you should do about it: 1. So what’s the problem? Click here for a guide on how to fix this problem. This means that your electric heat strips are not coming on. There are many issues that can cause your heater to blow cold air. Check the thermostat and the thermostat fan setting. Check your thermostat. 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. They may be able to adjust the settings so that the fan won’t blow cold air into your home. Dirty Filter. If you’re still not getting warm air from your furnace, we can help. Does the air start out cool and then warm up, or are the cool air cycles in addition to the warm air cycles (for example does it blow cold air 3 times a day, and warm air 7 times a … We’ll explain each of the problems above, how you’ll know if that’s your particular issue and what you can do to fix it. What to do if your heat pump is blowing cold air. Why Is My Furnace Blowing Cold Air? If the filter’s surface is caked with contaminants, it’s time to replace it. 7. There are many issues that can cause your heater to blow cold air. Regular maintenance… A … Dirty Furnace Filter. If leaks are excessive, you may want to consider sealing your ducts. Make sure your thermostat is set to HEAT and your fan is set to AUTO. A dirty air filter restricts airflow into your furnace. 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