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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. If the furnace does not start back up after it has cooled and the air filter has been replaced, you may need to. 7 Possible Reasons Your Home Heater/Furnace Is Blowing Cold Air A friend of ours bought a new house recently. Translation: When your fan limit switch is set correctly and is working properly, you should never feel chilly air coming from your vents. If your gas furnace is older and it’s blowing cold air, chances are its pilot light has gone out. But that fan has two modes of operation: ON and AUTO. The furnace will stop working to protect the heat exchanger from exposure to high heat – if the blower motor continues to run, only cool air will come out of your vents because the furnace is no longer working to produce heat. Furnaces blowing cold air will sometimes may have various issues present that cause this issue. Check the air filter. Your furnace may be blowing cold air because the filter is too dirty. So too with an electric control panel. If your Oil Furnace is Still Blowing Cold Air, Check Your Flame Sensor. It then turns itself off, and after a couple of minutes, resumes its heating cycle properly. Electric Furnace Troubleshooting. 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. Have a professional inspect the fan limit switch. 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. 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. And because your furnace is no longer heating, the air being pushed into your home will be cold. While it's blowing cold air, the thermostat calls for heat, but the furnace will not respond, even if I … And remember: Routine furnace maintenance is the best way to avoid a costly emergency HVAC repair. However, if a blockage is present, condensation will back up and trigger the overflow kill switch which shuts down the furnace to prevent damage. Or I 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. Bryant furnace error code 33 https://youtu.be/fMHvgBxDwm03. If you’re comfortable doing so, just follow the manufacturer’s instructions for how to re-light it safely. Here's a rundown, including what to do about it. I would advise you to call a technician out to check since electric heat is very dangerous to work with. When your pilot light is out, an otherwise perfectly functioning furnace will not provide heat for your home. Furnace Blowing Cold Air Sometimes – What to Do. A filter in any heating or cooling product is important, but it is something else that can break and cause issues. 1) Thermostat is set to ON Is your furnace blowing cold air only sometimes? The air coming out of the vents will just be about whatever the temp inside is currently, or colder. Sometimes, the thermostat simply isn’t compactible with the heating system. 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. When you have a furnace blowing cold air sometimes, your Redlands area home definitely isn’t as comfortable as it could be! When the thermostat is set to ON, the furnace blower motor continuously runs, even when the furnace does not. The longer you run a broken furnace, the greater your chances of inflicting permanent or serious damage. Possible Conclusion 1: It’s Not Blowing Cold Air. So I live in a mobile home with an electric furnace, and occasionally it will just completely stop producing heat. Sanborn’s Air Conditioning & Heating walks you through some simple troubleshooting for some of the problems you may be able to solve yourself. Again using Occam’s Razor, we can assume that the next likely culprit for your heater blowing cold air is your thermostat. Check your air filter. Rinse, dry, and replace. To troubleshoot an electric furnace, start with the obvious and move to the complex components. 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. When the fan is on, the furnace will continue to blow, regardless of whether or not the air is being heated. Why Is My Furnace Blowing Cold Air? Typically, the condensation drains away from the home through the condensate drain line. This causes the system to overheat, and your furnace trips its limit switch because internal temperatures are too high. Your System Was Just Turned On. Furnace sometimes blowing cold air. Dirty Filter. We’ve tried to troubleshoot the issues your furnace might be having. 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. Click here for a guide on how to fix this problem. 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. Have an expert inspect your ducts along with the furnace. Pilot lights used to be a standard component on any gas furnace before the 1990s. It has a clean air filter in it also. Depending on the age of your system and its model, you may have to manually relight it yourself or you may only need to push a button. Our technicians take over when troubleshooting isn’t enough, performing reliable repairs to help your furnace run flawlessly throughout the winter season. Alternatively, you can call your local utility company or an HVAC technician to make sure it is lit safely. An old or dirty flame sensor will cause your furnace to blow cold air, too. Once finished, turn power back on to the system. If I shut if off for a few minutes and then try again, about half the time it will blow hot air. furnace, it produces condensation. 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. 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. 11. Your fan limit switch is located just under your furnace hood and is in charge of telling your furnace blower when to come on. If your furnace is blowing hot air sometimes, and cold air other times, the fan may be on. What to do if your heat pump is blowing cold air. 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. Normally, this switch should allow the furnace burners to warm up completely before turning the fan on and should keep the fan running just until the burners cool off slightly (to prevent damage or overheating). If you’re asking: why is my furnace blowing cold air when the heat is on? The first thing you should check is the fuses or circuit breaker. © 2020 Patrick Riley, LLC. In any case kick the last servise guy to the curb and try another company. 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. I replaced the thermostat and that did not fix it. I have an electric furnace that blow cold air sometimes. The longer you run a broken furnace, the greater your chances of inflicting permanent or serious damage. 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. When the furnace is off and no heat is produced, cold air will be blowing from the vents. If leaks are excessive, you may want to consider sealing your ducts. 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. A filter in any heating or cooling product is important, but it is something else that can break and cause issues. When the furnace is on, the blower motor circulates hot air to heat your home. When your furnace is blowing cold air, you could be looking at a number of issues. 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. blowing cold air furnace broken It was a dark and stormy night. Dirty Filter. It then turns itself off, and after a couple of minutes, resumes its heating cycle properly. Check the Pilot Light. 2. Check to see if one of these troubleshooting tips fixes the issue. 2. A furnace blowing cold air is indicative of a problem. Here are 6 common reasons for a furnace blowing cold air, and what you should do about it: 1. Your furnace blows hot air but that air quickly turns cold then the furnace shuts off altogether. When the air filter is dirty, airflow through the system is restricted and the furnace may not be heating the air. Unfortunately, you’ll need a professional to fix this problem. During the cold winter months the last thing you want to have is furnace problems. Ductwork with a loose connection. 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. Check that all supply vents are open. Otherwise your electric heater or gas furnace will not turn on. To solve the problem, try these 2 things: Turn off the heat at the thermostat and check your air filter. The most common source is holes or leaks in the duct work which allow warm air to escape and cold air to enter. So, how do you know which problem is causing your furnace to blow cool air? Here are 7 possible causes, and only some cost money to fix Ph: 425.402.4456 Now let’s talk about an even more common reason a furnace might blow cold air: you’re using the wrong fan settings. Your supply vents (pictured below) push warm air into your home. When the furnace stops, the blower motor will stop, too, so you don’t have cold air coming from your vents. Our technicians take over when troubleshooting isn’t enough, performing reliable repairs to help your furnace run flawlessly throughout the winter season. Check the thermostat and the thermostat fan setting. A dirty air filter is a common culprit of furnaces blowing cold air. Thermostat: A Furnace Blowing Cold Air Could be Due to Your Thermostat. Once finished, turn power back on to the right in the system. You own an electric furnace, the greater your chances of inflicting permanent or serious damage fan may able! Pictured below ) push warm air to escape and cold air when air! Various issues present that cause this issue, the greater your chances of inflicting permanent or serious damage and old!, do the following: turn off the heat at the thermostat and did! Causing that cold air sometimes, and occasionally it will run up up your electric heater gas. 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