If that doesn’t help but you still suspect your furnace is overheating, it’s time to call in a professional HVAC technician. 15. The primary cause of furnace overheating issues is a dirty/clogged air filter, and furnace overheating can majorly damage your heat exchanger , which can result in costly furnace repairs or even new furnace … Why tell this story? Getting home to a cold The furnace is old but the air cond. With such low volume of air blowing, the air cond. Has it been awhile since you changed your furnace air filter? If your thermostat’s 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. If this doesn’t fix the problem, and you smell gas, turn off your gas supply and call a professional right away. The most common reason why your furnace is not blowing hot ar is related to the filter. If you’re getting cool air instead of warm, the problem may not be your furnace at all. Furnace is not heating, turning on, or blowing hot air. Even after performing the necessary troubleshooting, if your furnace is still not blowing hot air, the best solution is to call HVAC professionals. I pull the access There are, incidentally, some common causes for why your furnace may be blowing cold air instead of warm, and what you can do to fix the problem. Below, we'll tackle some possible reasons why your gas furnace might be blowing out not-so-warm air. A furnace not blowing hot air can be an easy fix — or a more complex one. 8001 South Route 31Crystal Lake, IL 60014Phone: (815) 455-7000Office Hours: Mon-Fri 9:00a-5:00p, 4152 May St.Hillside, IL 60162Phone: (312) 332-5700Office Hours: Mon-Fri 9:00a-5:00p, 24 Hour Emergency ServiceToll-free: (800) 225-2443Fax: (815) 455-8354. To warm your cold inside air, the heat pump’s outdoor unit uses liquid refrigerant to absorb heat from the outside air. 7 Reasons Your Heater Blows Cold Air/AC Blows Hot Air. Check the Service Door It is possible—particularly if you’ve recently changed your furnace filter or done other maintenance—that the door to your furnace … If all of these things check out but you still suspect a malfunction, the thermostat may need recalibration or replacement. Most commonly, a dirty furnace air filter. Common furnace issues like when a furnace is not blowing hot air can be as simple as a filter. Problems with your pilot light can cause your gas furnace to blow cold air. Let’s look at some of the solutions to this common furnace problem. Your home’s HVAC system is one of the most important systems when it comes to your safety, your comfort, as well as your home’s value. When you have your thermostat in the “on” position, your furnace will constantly blow air even if your furnace is not producing heat. Common furnace issues like when a furnace is not blowing hot air can be as simple as a filter. Thermostats are fiddly things—plus, you never know who in the house might have done some “unauthorized adjustments.”. Your furnace may be blowing cold air because the filter is too dirty. If your heater still won’t stop running, your problem could be one of … So here’s the situation: It’s a chilly night in Phoenix and you turn the heat on, expecting some warm Even if your furnace is fairly new, things The amount of hot air and which direction it blows are controlled by the buttons and switches on your dash, which direct the … Instructions. 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. Many people have experienced the very uncomfortable and inconvenient phenomenon of a system blowing warm air instead of cold. Have you had any repairs done lately? Contact Support at 1-855-733-5465 to find a pro-installer in your area. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ SPONSORS / Collabs:Would you like to partner with Word of Advice TV? (916) 256 … If none of these fixes takes care of your furnace problems or you are not comfortable troubleshooting the issue, contact a … Apart from a faulty thermostat, low battery problems may result in the heating system blowing cold air. The cold air you feel is from the fan blowing it in because it is always running. Clogged and Dirty Filters Other potential problems include a bad blower fan or limit control switch. A clogged filter will restrict air … Winner of: The Northwest Herald 2013 Readers Choice Award for The Best Heating and Air Conditioning and One of the Best in Plumbing Services. When the air temperature reaches the setting you’ve chosen — let’s say 70 degrees — the furnace can take a break until the air drops below 70 again. Getting cold air from your furnace is NOT cool (pun intended). Leaking Air Ducts If your home’s air ducts are leaking, cold air could be making its way inside and mixing with the hot air produced by the furnace. 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. That may be a quick and easy fix. There are four main components of a furnace. There are many reasons an HVAC (heating, ventilation, air conditioning) system might stop working. This is especially true if you're in the middle of the winter months. Ensure the fan’s setting is not on continuous running as this causes the heater not to blow warm air. The fuel system, the burners, the fan and the ductwork. A technician will need to repair the reversing valve. WARM/HOT – This means your reversing valve may not be configured or wired properly. But if you have low refrigerant charge (due to a leak, most likely) then it’s not bringing in enough heat to warm your air. 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. Here are some reasons why this is happening and tips on how to fix it. Whether you need a new forced air furnace, a mini split system or a room heater, Total Home Supply has you covered. It may... 3. The fix: Nothing. If your furnace won’t stop running and blowing hot air, you should first check your thermostat and make sure it’s set to “auto” instead of “on” — this way, the furnace will shut off when it reaches a certain temperature. is just 2 years old. Is your furnace not blowing hot air? The reason your furnace is not blowing hot air could be a setting on the thermostat, a circuit breaker, or a clogged air filter. Look to these possible causes one at a time. If your furnace is not doing that, what are you paying it for? Furnace Not Blowing Hot Air? Even worse, the furnace is blowing cold air! Is your furnace not blowing hot air? Your furnace’s heat exchanger may overheat due to the lack of air, causing the burners to shut down. Getting home to a cold house and having a furnace that blows cold air is a headache. 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 … If you just turned on the heat, hot air may not yet be flowing through your air ducts. If you have an older gas furnace with a standing (physical) pilot light, the light can go out. While working with the ignitor is a job for a pro, you can check for a dirty ignitor if you know how and feel absolutely comfortable shutting off power to your furnace, taking off the front panel, and locating the ignitor. That’s why minor issues with your heating system still deserve a lot of attention, even if it’s something that is as simple as a furnace that’s blowing warm air rather than hot air. Furnace is not heating, turning on, or blowing hot air A clean and healthy furnace filter results in energy savings, home comfort, better air quality and a longer lasting furnace system. When the air temperature reaches the setting you’ve chosen — let’s say 70 degrees — the furnace can take a break until the air drops below 70 again. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. The most common issues that cause your furnace to blow lukewarm air, including: Check your thermostat’s settings. Your Thermostat Setting Is Wrong This may seem like a painfully obvious reason for why your furnace isn't blowing hot air, but you'd be surprised at just how many people don't check their thermostat first before … If you’re in the Greater Chicago area, schedule your furnace service online or give us a call at (815) 455-7000. This can be due to a low level of refrigerant, a problem with the compressor or condenser, or even the thermostat itself. But if you have low refrigerant charge (due to a leak, most likely) then it’s not bringing in enough heat to warm your air. Your furnace has one job: blowing hot air. This results in mild, lukewarm air emerging from the vents. A flame sensor that’s covered with grime or worn out can cause the burner to keep shutting off. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. Yet so many homeowners do not know what to do to reap these benefits. If the furnace filter gets too dirty, it will block the return air flow to the furnace. If it won’t stay lit, call a professional. Our licensed Chicago HVAC technicians can diagnose the problem and get it resolved fast so you’re not left in the cold. 1. If you’re getting cool air instead of warm, the problem may not be your furnace at all. If your furnace is blowing hot air sometimes, and cold air other times, the fan may be on. Furnace is Overheating. Do you have an automatic electric starter or a pilot light? When you get to your destination, you expect to walk into a toasty warm space. Check the thermostat.. Once you’ve 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. What temperature do you feel blowing from the vent? Check that your filter is not dirty. Air coming out of the vents is not very warm but good enough to heat the house with the covers off (does not heat the house enough with them on). If you’re not uncomfortable and your furnace still blows out hot air on occasion, you probably don’t have anything wrong. If you suspect a problem with your ductwork, contact a professional who specializes in that area. If your gas supply is not turned off, then you probably have a severed line. A clean and healthy furnace filter results in energy savings, home comfort, better air quality and a longer lasting furnace system. If you haven’t been regularly checking and changing your air filter, it’s most likely extremely clogged. Or maybe the air starts off hot, then turns cool before the furnace shuts down. In the end, it may not even be a problem with your furnace if it's not blowing hot air. See the Ignition section from above. New furnaces cost on average over $3,000 . Althoff Industries does not assume any liability resulting from the provided information. Once the air flow is no longer restricted and the unit cools down, the furnace should start blowing warm air. our gas furnace is blowing kind of warm air but not enough to get to the temperature as set by the thermostat. Often the initial issue is simple to fix, but can lead to complicated and costly problems if put off too long. If it does not, the Sometimes, it can be faulty ductwork causing you to feel lukewarm air on the other side. Typically this will be accompanied by a limit open error code on the furnace control board. Your furnace might lock down for safety reasons if it is not getting the amount of gas it requires to provide warm air. If your gas supply is not turned off, then you probably have a severed line. Repeated overheating will damage the heat exchanger and lead to a big repair bill. 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 electric furnace is not blowing hot air, there might be some issues with the thermostat. Eight times out of ten, if your furnace is powering up, and everything else seems to be normal — except that it’s blowing cold air (well, unheated air) instead of hot air, you probably just need to replace your ignitor. If your furnace isn't blowing hot air, or the furnace is blowing warm air, but not hot — you're still in need of some … If the airflow to your furnace is restricted, it can cause your furnace burner to shut off while the blower keeps running. The pilot light might be out. 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. See if 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. New furnaces cost on average over $3,000 . A dirty air filter affects more than just your home’s air quality (though don’t get us wrong, that’s important). Word of Advice TV is not responsible for any possible damages or injuries caused by the use or misuse of the provided information. Some of the more complicated furnace issues involve the circuit breakers. Lastly, if your furnace is overheating, it can result in your furnace blowing out cold air rather than warm air. You should also take the time to make sure that the thermostat isn’t being changed by other people, and that your thermostat also isn’t on the “FAN” option. Or, it may prevent the furnace from operating at all. Thanks a million for your support! Top 6 Reasons Why Your Furnace Isn’t Blowing Hot Air 1. Leaving the fan set to On causes the blower to continue running air, even when it’s not warm. If the filter is dirty, no airflow allows your furnace to release the hot air. Heat pumps typically produce air that is about 90-100°F, whereas furnaces can produce air as high as 120-125°F. A furnace that frequently shuts off automatically may have other issues, such as a clogged air filter or blocked ducts that are causing the furnace to overheat. If you’re looking for a little extra help on troubleshooting the system you purchased from Total Home Supply, call us with … Problems with your vents or ductwork are likely to blame. Gas leaks are dangerous. That may be a quick and easy fix. Duct leaks can be The blower motor itself does not create the heat; rather it blows the heated air created by the furnace through the system's ductwork. Still getting cold air from your furnace? Top 10 Furnace Questions & Answers By Andrea Pohlsander January 22, air filter and see if it starts blowing only warm air. Insulation can break down and fall into the duct space, clogging it. Thermostat is Set Too Low – . The last thing you want to find is that the furnace is not heating. The reason your furnace is not blowing hot air could be a setting on the thermostat, a circuit breaker, or a clogged air filter. All rights reserved. Whether you're turning it on for the first time, or you've experienced a random mishap, a furnace not blowing warm air is less than ideal. Most modern gas furnaces have an electronic pilot igniter coupled with a flame sensor rather than a physical pilot light. Other potential problems include a bad blower fan or limit control switch. Simply put, a clogged air filter can cause your furnace to overheat, shut itself off and give you the illusion of a furnace not blowing air when, in fact, it is your air filter that is causing your furnace to turn itself off as a safety precaution. Check the air filter.. Has it been awhile since you changed your furnace air filter? A furnace problem won’t fix itself. Check that the gas valve handle is inline (parallel) with the gas pipe—that means it’s on. Over time, ducts can actually break due to the stress of fluctuating temperatures. what can be happenin … read more I tried bleeding the lines, reset the gas valve and cleaned the burners but still no luck. To address this issue, we’ve come up with some common reasons your furnace may not be blowing hot air. Email: WordofAdviceTV@gmail.com ✍️ Warm air is sent through your ducts when the thermostat says it’s needed. © 2018 Althoff Industries. 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