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Schedule service Troubleshooting tip #1: Check the thermostat If your furnace blows hot air sometimes and cool air at other times, … 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. Instead, you’re blasted with cold air. © 2020 Patrick Riley, LLC. Your thermostat’s fan setting. The longer you run a broken furnace, the greater your chances of inflicting permanent or serious damage. It has a clean air filter in it also. And because your furnace is no longer heating, the air being pushed into your home will be cold. So, how do you know which problem is causing your furnace to blow cool air? Furnace sometimes blowing cold air. Woke up one moring and it was blowing cold air. A filter in any heating or cooling product is important, but it is something else that can break and cause issues. Check the air filter. to repair your furnace fast! 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. Find the exit point of the condensate line by following the tube to the outside of your home. A furnace blowing cold air is indicative of a problem. 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. 6. 11. Thermostat: A Furnace Blowing Cold Air Could be Due to Your Thermostat. Well, lucky for you, that’s where we come in. When the sensor isn’t working properly because it’s covered in grime, your burner will keep shutting off. Water on the floor around your furnace is a clear sign of this issue. Just contact us. 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 you’re comfortable doing so, just follow the manufacturer’s instructions for how to re-light it safely. Your System Was Just Turned On. If your filter gets dirty, it can block the airflow in the heat exchanger. It’s a simple fix; just relight the pilot. 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 … If I shut if off for a few minutes and then try again, about half the time it will blow hot air. If you’ve read some of my other articles, you’ll know that I am a huge fan of checking the simplest problems first. 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. If you’re asking: why is my furnace blowing cold air when the heat is on? Sanborn’s Air Conditioning & Heating walks you through some simple troubleshooting for some of the problems you may be able to solve yourself. This would not cause you to get cold are but it will run up up your electric bill. Often, this issue is caused by the fan settings of the thermostat. 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. If your thermostat is set to "on" instead of "auto," it could be causing your furnace to blow cold air. 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. Using a wet/dry vacuum, pull out all water that has gathered in the pan. Call Sanborn’s Air Conditioning & Heating. But that fan has two modes of operation: ON and AUTO. Just contact us and we’ll send over an experienced Phoenix tech that can get your furnace working properly in no time. https://youtu.be/ssI_YCnnF4Q2. If your furnace is blowing cold air some of the time, but working otherwise, there are a few possible reasons for the problem. While it's blowing cold air, the thermostat calls for heat, but the furnace will not respond, even if I … 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. Well this happens sometimes and a few things can be the cause. 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. I have a York Diamond 90 furnace up in my crawl space. Is the furnace’s blower constantly running? Heating systems are generally easy to maintain. Translation: When your fan limit switch is set correctly and is working properly, you should never feel chilly air coming from your vents. Here's a rundown, including what to do about it. Verify the unit has power. A home furnace, heat pump, or heater blowing cold air isn’t necessarily a reason to panic. If you’re comfortable doing so, just follow the manufacturer’s instructions for how to re-light it safely. My electric furnace blows 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. 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. Restricted airflow can overheat your furnace, causing a safety control to shut off the burners. Overheating Furnace . Here are 6 common reasons for a furnace blowing cold air, and what you should do about it: 1. 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. However, if a blockage is present, condensation will back up and trigger the overflow kill switch which shuts down the furnace to prevent damage. 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 … Why Is My Furnace Blowing Cold Air Sometimes? Your furnace may be blowing cold air because the filter is dirty. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. When you have a furnace blowing cold air sometimes, your Redlands area home definitely isn’t as comfortable as it could be! Ductwork with a loose connection. Rinse, dry, and replace. It’s not uncommon to notice that your furnace is blowing cold air sometimes, but hot air other times. 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 your furnace is blowing hot air sometimes, and cold air other times, the fan may be on. My electric furnace blows cold air, sometimes. Remove the air filter from the filter compartment and inspect it. The air coming out of the vents will just be about whatever the temp inside is currently, or colder. And remember: Routine furnace maintenance is the best way to avoid a costly emergency HVAC repair. Compromised flame sensor. Once in a while, perhaps once every day or two, it starts blowing cold air for about a 45-50 minute period. There is a reason for this – it works! Ensure that your thermostat is set higher than the temperature in your home. Burners, the thermostat and that did not fix it keep on rockin ’, it... 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