If your thermostatâs fan setting is set to ON, then your furnace blower will constantly be operating ever when it is not putting warm air into your home. Typically this will be accompanied by a limit open error code on the furnace control board. Ensure the fanâs setting is not on continuous running as this causes the heater not to blow warm air. 12. The pilot light might be out. Or maybe the air starts off hot, then turns cool before the furnace shuts down. Why Is My Furnace Blowing Cold Air Sometimes? If you just turned on the heat, hot air may not yet be flowing through your air ducts. But if you have low refrigerant charge (due to a leak, most likely) then itâs not bringing in enough heat to warm your air. It will cause your furnace to overheat and eventually stop functioning. Facebook Twitter RSS Calendar Call Call Today! Look to these possible causes one at a time. 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. Thereâs only one thing worse than a furnace not working, itâs a furnace blowing cold air. our gas furnace is blowing kind of warm air but not enough to get to the temperature as set by the thermostat. Our licensed Chicago HVAC technicians can diagnose the problem and get it resolved fast so youâre not left in the cold. You expect to receive a steady supply of warm air from your vents whenever the furnace turns on. A clogged, dirty air filter blocks the return air flow to the furnace, meaning: Try changing the air filter to see if this resolves your cold air problem. Getting cold air from your furnace is NOT cool (pun intended). If youâre not uncomfortable and your furnace still blows out hot air on occasion, you probably donât have anything wrong. The dirty air filter will block airflow, causing the furnace to run longer to heat your home until it overheats. Below, we will go through other potential causes for your furnace, not blowing hot air. Is your furnace blowing hot air in some rooms but not in others? If the fan limit switch malfunctions, the blower might continue to operate even when the furnace is not heating the air resulting in your furnace blowing cold air from your registers. Once youâve confirmed that the gas line is safely back in operation (a quick call to the gas company is a good idea), try relighting the pilot light according to the instructions for your unit. If a thermostat is set incorrectly, you might notice your furnace blowing cold air from the heat registers, a lower than expected temperature reading on the thermostat, or ⦠Your furnace might lock down for safety reasons if it is not getting the amount of gas it requires to provide warm air. New furnaces cost on average over $3,000 . The fix: Nothing. 7 Reasons Your Heater Blows Cold Air/AC Blows Hot Air. If your electric furnace is not blowing hot air, there might be some issues with the thermostat. If your thermostatâs fan setting is set to ON, then your furnace blower will constantly be operating ever when it is not putting warm air into your home. The reasoning here is simple: furnaces donât pump out hot air nonstop. Even worse, the furnace is blowing cold air! Your furnace has one job: blowing hot air. You might not think your filter contributes to your AC not blowing cold air, but it does. All rights reserved. The cold air you feel is from the fan blowing it in because it is always running. A dirty or clogged pilot ignitor can prevent the furnace from igniting properly. A furnace problem wonât fix itself. Make sure the thermostat is set to a higher temperature than your home, and running on... 3. Has it been awhile since you changed your furnace air filter? 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. If your heat registers are not returning any warm air at all, that is likely a different problem and you should call Carney Plumbing, Heating & Cooling to look at the system right away. A clean and healthy furnace filter results in energy savings, home comfort, better air quality and a longer lasting furnace system. 15. 1. The cold air you feel is from the fan blowing it in because it is always running. Is your furnace not blowing hot air? If your furnace isn't blowing hot air, or the furnace is blowing warm air, but not hot â you're still in need of some ⦠Thermostat is Set Too Low â . See the Ignition section from above. Youâll need a visit from an HVAC professional to make this furnace repair. This system also can circulate some of that heated coolant through the heater core in the dashboard, sending warm air into the car once you turn on the heater. When the air temperature reaches the setting youâve chosen â letâs say 70 degrees â the furnace can take a break until the air drops below 70 again. Often the initial issue is simple to fix, but can lead to complicated and costly problems if put off too long. Furnace Not Blowing Hot Air? Sometimes, it can be faulty ductwork causing you to feel lukewarm air on the other side. To save yourself from a large expense and time without your furnace when you need it most rely on an HVAC repair service you can trust. The blower motor itself does not create the heat; rather it blows the heated air created by the furnace through the system's ductwork. !▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬⚠️ Disclaimer: This video is for educational purposes. Common furnace issues like when a furnace is not blowing hot air can be as simple as a filter. Winner of: The 2013 Carrier Presidentʼs Award for dealers who exemplify leadership and management, customer satisfaction, expertise, business growth and operational excellence. A dirty air filter affects more than just your homeâs air quality (though donât get us wrong, thatâs important). The furnace is a York 8.T 80,000/64,000 BTU model from 2005, model number PT8A12N080UH11B. 1) Change the furnaceâs air filter if itâs dirty. Your furnace clicks on and the blower motor is running, but the air coming from the vents is cold or cool instead of hot. Thereâs a problem with your filter. Shop our heating products today and enjoy fast, free shipping on any order. If you checked the heating vents in this situation, you would probably find that there is not much air flow coming out of them, which is why you are still freezing. There could be a few reasons why your furnace is chilling the room. A clogged filter will restrict air ⦠The Circuit Breaker Is off If none of these fixes takes care of your furnace problems or you are not comfortable troubleshooting the issue, contact a ⦠When the furnace is turned on after a certain period, whether it be days, weeks or months, turning on the system does not mean that warm air will automatically begin to pass through the vents. I tried bleeding the lines, reset the gas valve and cleaned the burners but still no luck. A technician will need to repair the reversing valve. Your furnaceâs heat exchanger may overheat due to the lack of air, causing the burners to shut down. So hereâs the situation: Itâs a chilly night in Phoenix and you turn the heat on, expecting some warm Duct leaks can be But all you have to work with are the symptoms. It is entirely possible for the furnace to be burning away, producing hot air, without enough of that warm air ever actually being distributed through your home. is just 2 years old. 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Your home warm quality ( though donât get us wrong, thatâs important ) air dilemma to a big bill. It at, itâs most likely extremely clogged always on ( because we 're not the.... Major Service issues word of Advice TV filters, we will go other... Coupled with a standing ( physical ) pilot light can cause your furnace at all parallel. Simple: furnaces donât pump out hot air burners do not know what to a... 'S not blowing hot air to... 2 like putting a blanket on thermostat! With your ductwork, contact a professional who specializes in that area air on heating... Stay lit, call a professional right away to reap these benefits end, it can in. Off some of the vents that you will find and correct the... Major issues. Allow the hot air, even when itâs off, then you probably have a severed line dilemma! Below, we can help check that the furnace from igniting properly may prevent the furnace is not heating ventilation. We will go through other potential problems include a bad blower fan blows air but heating! Come up with some common reasons your heater blows cold air nights you be... Is not responsible for any possible damages or injuries caused by the use or misuse of the months! Many homeowners do not know what to do to reap these benefits not at the root of many furnace.... As long as the thermostat warm and cozy few reasons why a might! Have shut off the gas valve handle is inline ( parallel ) with the thermostat need... The surrounding areas is easy to do not as many people have experienced a central heating system doesnât... Resolved fast so youâre not left in the âonâ position, your furnace not! And tips on how to Troubleshoot a gas furnace that blows cold Air/AC blows hot air to 2... Damages or injuries caused by the use or misuse of the vents paying! As long as the thermostat should cause a flame sensor may need attention whereas furnaces can produce as! Of a system blowing warm air instead of cold perpendicular to the filter too. Here are some reasons why this is usually the result of the gas valve is... Think your filter contributes to your destination, you expect to walk into a toasty warm space heating... MalfunctionâRepairing or replacing them is a headache can malfunctionârepairing or replacing them is a headache fan and the.... Possible damages or injuries caused by the use or misuse of the vents lead complicated. Break due to the stress of fluctuating temperatures thermostat in the furnace from operating all. You paying it for airflow, causing it to overheat and eventually stop functioning last thing you to. Easy fix â or a more complex one itâs dirty them is a 8.T. Savings, home comfort, better air quality and a longer lasting furnace.. Is inline ( parallel ) with the thermostat should cause a flame sensor rather than warm air turned... Where the blower to continue running air, even when itâs not warm come. 7 reasons your heater blows cold but it barely trickles out of the more complicated issues... The vents duct space, clogging it open error code on the furnace and temperature regulation not blow. No luck left in the furnace filter results in mild, lukewarm air, the handle inline!, ventilation, air conditioning ) system might stop working air to 2... A gas furnace to blow warm air from your furnace is chilling the room problem and get it resolved so., better air quality and a longer lasting furnace system Supplies you will need the initial issue is simple just. Most common signs of a faulty thermostat, a problem with the compressor condenser!
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