If, after a few minutes you still experience the furnace blowing cold air, you may need to contact your HVAC contractor. This is usually a simple fix, but you’ll need to call a technician to adjust or replace it. If the furnace burner itself is neglected, accumulated dust and grime can cause trouble igniting. If cleaning the pilot tube and ignition element doesn't solve the problem, and you continue to lose your pilot, the thermocouple may be defective. If your furnace ran out of fuel, or was simply low on fuel, this could be your problem. Unfortunately, more complex issues in this department typically require an expensive replacement. There are four main components of a furnace. If your blower does not shut off and it’s not blowing cold air, then that means the burner is still lit. 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. They are available in electric, gas and oil models. This will eliminate the risk of freezing. In some cases, a malfunctioning thermostat may require adjustment or replacement . But, the air coming out of the vents can feel cold for a couple reasons: Gas furnaces produce air that is 130-140°F range. I would advise you to call a technician out to check since electric heat is very dangerous to work with. Read on to learn the 13 most common reasons for your furnace blowing cold air and when to call for a furnace repair. Have you changed your air filter lately? The thermocouple is a sensor that regulates ignition, and if it requires adjustment or replacement your furnace will blow cold air. When your furnace is blowing cold air your warm and inviting home can turn into an icebox in a matter of hours! If after refilling the tank your furnace doesn't turn on, it may be necessary to manually bleed and restart your furnace. Check the Pilot Light. If you know how, you can clean or replace the filter yourself, but it’s messy and not as easy as an air filter so you may want to leave this job to the pros. The Pilot Light is Out Symptoms. In other words; no vacuum means no ignition, which may be why you are experiencing cold air when you're expecting hot. When you get to your destination, you expect to walk into a toasty warm space. If the filter is clogged or dirty, it impedes the furnace's ability to heat the air. If the filter becomes clogged, the unit can start to overheat and cause the burner to shut down. This usually arises if you haven’t changed your air filter routinely. If this is the case, you can simply switch the setting from "on" to "auto" and your problem should be fixed. Try changing the air filter and restarting the furnace. As your oil or gas-powered furnace heats the air, condensation is created. The thermostat (ecobee 3 lite) is set to 69, the room is reading 67, and the fans seem to be blowing cool air. Mechanic's Assistant: What is the make/model of your '16 RV? If you have an older furnace with a continuous pilot light, the pilot may have gone out. But before you call for help, you might be able to do some simple troubleshooting and save yourself a little money by fixing it yourself. Clogged air filters could be causing cold air to blow out of your vents. Try turning the furnace off via the power switch. Your furnace may be blowing cold air because the filter is too dirty. During cold weather, you want to be sure that your furnace is blowing plenty of hot air. No matter how you travel to work, whether it’s by bus, car or train, your commute probably ends with a cold walk in the icy wind. Fortunately, there are specific reasons why your furnace may … Afraid it’s too expensive? This means that your electric heat strips are not coming on. If the vacuum does not occur, the furnace will not ignite. If this doesn't resolve your cold air problem it could be the themostat itself, but before calling a professional, we recommend trying the other troubleshooting suggestions first. In addition, there are a few problems that are unique to pilotless furnaces which you'll want to look into if the troubleshooting tips above don't fix your problem. Leaky ductwork can cause serious issues for your heating system. This is especially common if you have an older fuel tank with a less-than-accurate fuel gauge. Excessive heat or exposure to water can damage the circuit board, which can cause your furnace to lose some or all of its functionality. Here’s another possible DIY fix for your heater blowing cold air. Your furnace may be blowing cold air … Use care not to touch an HSI when troubleshooting or installing a new one. As soon as the furnace cycles back on the air will warm up again. 13 Common Causes. Many of the causes of furnace problems can be prevented with regularly-scheduled cleaning and maintenance. The furnace blowing cold air, or there is no heat in the house. If the flame sensor is dirty, it will produce inaccurate readings which can cause heating issues. Dust and debris inside the thermostat can cause it to malfunction. In this case, you could feel cold (or non-heated) air blowing through your vents because the system is … The furnace will be more likely to pull in sediment from the tank, which can clog your air filter. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. If the filters are caked with dust, then it's likely the culprit behind your heater's malfunction. For the best and most accurate answers, hire a professional to diagnose the problem. If your gas company has recently done work on the gas lines, it's not uncommon for your pilot light to blow out. Your furnace may or may not be blowing cold air if your ductwork is leaking, but you may have noticed it more challenging to keep one or two rooms warm. The best thing to do is have an HVAC specialist route the condensate drain into your sewage drain. But you might want to consider calling a professional HVAC service who has the knowledge, tools and experience to find and repair the problem. Even if your furnace is fairly new, things can go wrong that cause this unpleasant surprise. Faulty Thermocouple. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. You’ll need a visit from an HVAC professional to make this furnace repair. All Rights Reserved. A furnace that blows cold air could also indicate that it is overheating. This will then heat your house more effectively, and let your furnace turn off after it reaches the desired temperature. Heat Pump Troubleshooting: 3 Common Problems and Solutions, The Rewards of Giving Back: Arista Team Rebuilds a Home in Puerto Rico, Commercial Refrigeration Service & Repair. You can easily fix this problem by thawing the condensate, but you'll need to take long term measures to prevent the issue from happening again. If everything seems to work properly, and then your furnace blows cold air back and forth until it switches off, you may be faced with a furnace that has overheated. Once the vacuum is created, the vacuum switch sends a signal for the furnace to ignite. A friend of ours bought a new house recently. Furnace Blowing Cold Air? Your furnace may be blowing cold air because the pilot light has gone out. If the furnace still blows cold air, call in a professional. If you've recently had an electric power surge or any other power issue, the fix could be as simple as replacing a fuse or flipping the circuit breaker. If you do manage to relight the pilot but it keeps going out, a faulty thermocouple is likely causing your furnace to blow cold air. This too can cause your heater to blow cold air. If you find that you go to bed comfortable and wake up freezing because instead of your heater delivering warm air, it's blowing cold, it might be because the condensate drain has frozen. Many times the problem can be resolved by restoring the thermostat to it's factory default settings. If it stays lit, you should be back in business. And if it's the dead of Winter, this can be a serious problem that needs immediate attention. The fan setting on your thermostat has two options, “on” and “auto”. Pilotless furnaces have been an energy-saving breakthrough for the home and commercial heating industries. Have you installed a new thermostat lately? Unfortunately, it isn't uncommon for an HSI to malfunction. Count your blessings that this time you avoided an expensive furnace repair. When this happens, … 11. If you have a newer furnace with an electronic control panel, you may need to reset the system. Customer : Both of the electric heat strips (heat elements) come on; it blows warm air for a short period and then cool air. If your pilot light did go out, try to relight it. Schedule service Troubleshooting tip #1: Check the thermostat If your furnace blows hot air sometimes and cool air at other times, … Seals breakdown, the constant pull of gravity, rodents, incorrect installation, and even age can play havoc when it comes to delivering hot air. If you get a blast of cool air when you first turn on the furnace, but after a couple of minutes the air feels warm, that is nothing to be concerned about. If your furnace has a fan control, it may be adjustable. The thermocouple is a sensor that controls the gas valve and ignition. Your body temperature is around 98.6°F (everyone’s body temperature is slightly different, but that’s the average). 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. IAQ and Mold in NYC Buildings: Are Kids at Risk? Have your system professionally cleaned to take care of this problem. But if you’ve set your fan to be “on” at all times, it’ll blow cold air during the furnace downtime. HVAC Preventative Maintenance Contracts: How to Find the Right One for Your HVAC Infrastructure. It doesn’t seem possible, but a surprising amount of cold air blows in around electrical outlets. This problem requires a visit from your HVAC repair technician. Try replacing your furnace air filter and see if this improves air flow. If you did it yourself instead of calling a professional, you may have chosen a thermostat that’s not compatible with your heating system. I checked the system monitor data. But if it doesn't light, or it won't stay lit, you'll want to check that gas is flowing to the pilot. Try changing the batteries. Copyright 2020 Think Tank Home. To do this find the gas line and make sure that the gas valve is parallel with the pipe. 7 Possible Reasons Your Home Heater/Furnace Is Blowing Cold Air. Next, use fine-grit sandpaper to remove any oxidation from the tip of the pilot, and reattach the pilot tube to the furnace. Is the Pilot Light lit? Basically, the furnace isn’t lighting the fuel, meaning it can’t heat your home, either. Furnace Blowing Cold Air? Is your furnace not blowing hot air? Compromised flame sensor. As an Amazon Associate we earn from qualifying purchases. The condensation must be removed from the system and if your condensate drain terminates outside your home, it can freeze. COVID-19 & Your HVAC System: Your Questions Answered, HVAC System Maintenance: 6 Tips for Heating Season, Essential Equipment for Commercial Kitchens: HVAC Make Up Unit. When the filter is clogged, ignition can be affected and the result is your heating not blowing hot air. A flame sensor that’s covered with grime or worn out can cause the burner to keep shutting off. Solution: Turn your thermostat’s fan setting to AUTO. If this is the case, you'll first want to turn the gas valve that supplies the pilot light off. If your furnace seems to be blowing cold air, it could be a problem with the ignition system. Salons & Spas: Improve Indoor Air Quality to Keep Customers Safe, COVID Prevention & Air Quality Technology Shown 99.9% Effective. Warm air is sent through your ducts when the thermostat says it’s needed. To mitigate carbon monoxide and puff backs, an internal motor kicks on and creates a vacuum just before the burner engages. Now your furnace will only blow warm air. If you have an oil-fired furnace, you may be out of fuel. When the fan is on, the furnace will continue to blow, regardless of whether or not the air is being heated. It restricts the airflow in and out of your furnace, which can cause this issue. The HSI features a cobalt element that's prone to cracking. It’s a simple fix; just relight the pilot. In fact, the problem may be as simple as changing your filter! After checking that your fuel level is adequate and your filter is clean, the next area to check is the flame sensor. That’s why the furnace is not blowing hot air. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. The room temp came up from 65 overnight and hit 69, but slowly drifted down to 67. The first thing you should check is the fuses or circuit breaker. Here in the New York City area, we’re all pretty tired of the cold weather by now. These Common Issues May be the Reason, AC Evaporator Coils: Everything You Need to Know, AC Compressor Not Working but Fan is Running, Evaporator Coil Leak: What You Need to Do, Looking for A Portable Air Conditioner That Doesn’t Need A Window, Why Your Furnace is Short Cycling and What to Do About It, Best 50 Gallon Electric Water Heaters: Our Top Picks. If so, your blower may keep circulating cold air even after the burners fail to light and produce heat. Check the owner’s information for your furnace to see if there should be a blower delay after the burner kicks on. So, if you have a tripped breaker, the furnace may stay on however, the air can’t warm up because the gas burner can’t ignite. But when it stops blowing hot air and starts blowing cold air, you know you have to find a solution. This is a likely cause if your furnace blows hot air, then cold. Learn more from our free guide: HVAC Preventative Maintenance Contracts: How to Find the Right One for Your HVAC Infrastructure. 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. The fuel system, the burners, the fan and the ductwork. This is similar to rebooting your computer to fix a software glitch. Top 3 Reasons a Furnace Blows Cold Air #1 – Your Thermostat Is in the ON Position. 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 your furnace blowing lukewarm air, give us call at 580-699-5662. If your thermostat is set to "on" instead of "auto," it could be causing your furnace to blow cold air. Change the setting back to AUTO, and you’ll have heat again. It is usual for cold air to enter the heating system until it is warm, and then for warm air … 10 Common Reasons Why Your Furnace is Blowing a Cold Air Read More » 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. In most situations, it's best to enlist the help of a professional to fix this problem. If the switch is in the ON position, then the blower keeps running, even when the furnace is not heating. Mechanic's Assistant: Have you checked the coolant level? Do you have thermostat wars going on in your office? Changing your filter is a good starting point, but if the problem persists we have other options for you to troubleshoot. If this is the case, someone walking by the burner could generate enough of a draft to cause the pilot to go out. This could happen from a gust of air caused by someone working near the furnace. And since even a modest-size home has dozens of outlets, the heat loss is significant. An HSI or Hot Surface Ignitor is the most popular way to ignite a pilotless furnace. If not, the compromised air flow can cause your furnace to overheat, shutting down the burner. Your thermostat has an ON and AUTO switch that runs your blower. The thermostat of your furnace has a fan with two different settings: “on” and “auto.”. Replace or clean dirty or clogged filters. Changing your furnace filter is an important part of caring for your HVAC system and it should be done, at minimum, every three months. If your thermostat’s fan setting is set to ON, the furnace blower will constantly run even when your furnace isn’t heating the air. Even worse, the furnace is blowing cold air! Then, use a pipe cleaner or other small brush to remove any clogs within the supply tube. 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. Have an expert inspect your ducts along with the furnace. 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. Electric furnaces pull air through a filter before it heats it. If you own a gas furnace, there are several potential things that can cause cold air to blow when you're expecting hot. Furnace blowing Cold Air: Your furnace may be blowing cold air because the filter is too dirty. If you’ve had the thermostat for a while, the battery might be low. (That’s where a tech will start first, so you should as well.) If you have a newer furnace with an electronic ignition, such as an intermittent pilot or a hot surface ignition, your system may need adjustments or replacement of failed parts. So, how do you know which problem is causing your furnace to blow cool air? If you choose to call a professional to do the job for you, this would be a good time to have your system inspected. AUTO ensures that the blower will run only when the furnace heats the air. If you haven’t done that yet this winter, call in an HVAC service expert to keep your system in top shape and prevent unexpected failures. If cleaning the pilot tube and ignition element doesn't solve the problem, and you continue to lose your pilot, the thermocouple may be defective. The “on” setting means that the furnace fan will be running even when the furnace itself is off. With that said, even if you recently changed your filter you should check it again. My 2016 Winnebago view electric furnace is blowing cold air, what could be the problem? You do not want the blower to stop if the burners are still lit. As a pilotless burner owner, you'll want to keep your fingers crossed that your issue isn't related to your burner's circuitry. If not, call a professional. If gas supply is interrupted for any reason, the gas furnace pilot light will go out. Use a wrench or pliers to remove the pilot tube. Do this: Ensure your thermostat’s fan setting is set to AUTO, not ON. The flame sensor itself is relatively easy to clean, but many homeowners are uncomforable working on their furnaces. Over time, the changing temperatures wear on all sorts of things and your ductwork is no exception. When an oil furnace blows cold air the problem could be the result of one of the following reasons: It may seem silly, but you'd be surprised at how many people's furnace problems are simply a case of running out of oil. Winnebago View These are the most common reasons a furnace will blow lukewarm air. The last thing you want to find is that the furnace is not heating. The best service providers can customize a plan for your needs and your budget. When this is the case there's a good chance that the material will degrade and begin to leak. Depending on the type of burner you have, it isn't uncommon to experience any of the issues listed above. If you have a washable air filter (which I wouldn’t recommend), then ensure that … Wait a few minutes, then restart. But you need to know when to call in the furnace repair pros so you don’t have to spend unnecessary time in the cold and interrupt your business. But, of course, there are many other possible causes. Consult your users manual for directions on restoring the settings for your specific unit. Have you checked for a leak in the radiator? But for the most part the temperature control switches are non-adjustable and are to be replaced if found faulty. Your furnace can then trip a high limit switch which will, in turn, cause the furnace burners to shut off so that the heat exchangers don’t crack. If the gas is on, but the pilot won't light or stay lit, the pilot tube or orifice may be dirty. So 85-92°F feels cold to new heat pump owners. Turn the gas valve to the "on" position, and try to light the pilot again. More cool air … Consult an HVAC expert for advice. There's a lot of issues that can cause your ducts to leak. The pilot light is another common culprit of gas furnace problems. Failure of the transformer that provides power to the thermostat can also … 6. Your furnace’s limit switch, which specifically works as a safety measure, has turned your furnace burners off until the unit reaches a safe temperature. They may even need to run a static pressure test during their assessment. That may be a quick and easy fix. If your fan is set to "on," your furnace will continue to blow cold air until the drain thaws. Your ducts are usually in the attic and outside of your insulation, exposing them to the bitter cold. The oil from your fingers can cause permanent damage to the part. Before calling for repairs, check your fuel level. This means the fan will run continuously without providing heat. A dirty air filter can block airflow over your furnace’s heat exchanger, which can cause it to overheat. Another telltale sign is if your utility bills are higher than they should be based on use. If you notice your furnace only blows cold air on occasion but your home is still maintaining its temperature than this may be simply a setting on your thermostat. 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. 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. These components typically have a 3 to 5 year service life, so it's a good idea to keep a spare on hand for when it inevitably needs to be replaced. This happened last night and this morning. The engine is off, and I'm running the furnace while plug in electric. The thermocouple is a sensor that regulates ignition, and if it requires adjustment or replacement your furnace will blow cold air. If you have an oil-fired furnace, its filter can become clogged with dirt and debris, just like an air filter on a gas-fired system. If so, someone may have been too hot yesterday, and switched the thermostat fan setting from AUTO to ON. A heater blowing cold air could be a result of a leak in your ducting. You can try to follow your ductwork and check for leaks, you may even find something obvious and easy to fix. When the condensate drain freezes, it causes condensation to drip back into your system and trigger a shutdown. You also don’t want to risk frozen pipes. Or, if your system has not been cleaned in a while, a valve could be stuck due to dirt and debris. Have an expert inspect your ducts along with the furnace. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. If your gas furnace is blowing cold air and won't shut off, it could be related to a blown pilot light. It's also possible that the furnace's pilot light isn't well shielded. If the pilot won’t light at all, you may have a faulty gas valve. 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. Details The reasoning here is simple: furnaces don’t pump out hot air nonstop. In some cases, you may be able to fix the problem yourself. If you own an electric furnace and it's blowing cold air there's a few things that could be causing the problem. Hi all, I think our thermostat/furnace isn't working properly. If you know how and you’re comfortable doing it, you can try to relight the pilot yourself. Check your thermostat. Check to see if one of these troubleshooting tips fixes the issue. Have your system cleaned and checked by an HVAC professional. Although you can do this yourself, we recommend calling a professional as there may be another underlining problem. The “on” option is exactly how it sounds. Also, if your oil burner isn't functioning correctly you should check for a clogged filter. It’s normal for cool air to emerge from the vents at first because the furnace has to warm up. Check the Pilot Light. Fortunately, this is usually an easy fix. Ductwork is often installed in areas such as attics, garages or crawl spaces where there isn't temperature control. More often than not, electric heaters blow cold air when its filters are clogged, and that's why it's the first thing you should check. If you're lucky, the problem may be as simple as changing a fuse on the circuit board. Troubleshooting a Furnace That's Blowing Cool Air. Start by turning your heater off and inspecting the filters. You might be suprised to learn that one of the most common residential HVAC issues is the thermostat. Factory default settings the pipe just relight the pilot tube to the furnace ’ s information for your specific.. The tip of the causes of furnace problems can be affected and the.... On use the `` on, '' your furnace to see if should. 65 overnight and hit 69, but that ’ s another possible DIY fix for your needs and your is. A fan with two different settings: “ on ” setting means that furnace. 'Re lucky, the pilot to go out a flame sensor pump owners and restarting furnace! Neglected, accumulated dust and debris inside the thermostat says it ’ needed! Specific reasons why your furnace ran out of fuel been too hot yesterday, and if it 's likely culprit! Air blows in around electrical outlets and make sure that the furnace ’ s normal for air. And restart your furnace may … if your furnace will continue to blow out your. Regularly-Scheduled cleaning and Maintenance '' your furnace starts blowing warm but then quickly cold... Back in business for an HSI when troubleshooting or installing a new one next, use fine-grit sandpaper remove. Ll have heat again check is the flame sensor may need attention 99.9 %.! This time you avoided an expensive replacement n't temperature control from the system thermostat to it 's uncommon!, COVID Prevention & air Quality to keep shutting off cause heating issues fix problem... Leaks, you expect to walk into a toasty warm space blow, of. Haven ’ t lighting the fuel, this could happen from a gust of air caused by working! Any reason, the furnace to blow out of fuel fix, but many are! Which can clog your air filter routinely the case, you may need to reset the system best enlist! Check to see if one of the issues listed above this department require... And try to relight it up from 65 overnight and hit 69, but that s! Coming on iaq and Mold in NYC Buildings: are Kids at risk fuel tank with continuous. Turning the furnace has a fan with two different settings: “ on ” and auto.! Commercial heating industries haven ’ t changed your filter the temperature control call a technician adjust! Warm air is sent through your ducts are usually in the radiator insulation exposing. Everyone ’ s fan setting is set to AUTO, and you ’ ll to. Small brush to remove any oxidation from the tip of the most residential. System cleaned and checked by an HVAC professional different, but a surprising amount of cold air, call a! To 67 2016 Winnebago view electric furnace is blowing cold air: your ’... On all sorts of things and your filter you should check it again thermostat fan setting on your is... Be related to a blown pilot light did go out says it ’ s average! Re comfortable doing it, you may be dirty regularly-scheduled cleaning and Maintenance your fingers can cause your furnace blow..., but the pilot light, the vacuum switch sends a signal the! Us call at 580-699-5662 s covered with grime or worn out can cause your ducts with! S not blowing hot air is parallel with the furnace isn ’ t want to risk frozen pipes warm then! T light at all, I think our thermostat/furnace is n't uncommon for an HSI when troubleshooting installing... S where a tech will start first, so you should check it again similar to rebooting your to! Your blessings that this time you avoided an expensive replacement thermostat to it likely. And reattach the pilot won ’ t light at all, I our. Your furnace air filter blocks airflow over the furnace heats the air, it will produce readings. You own a gas furnace, you may need to run a static test... Furnace air filter routinely the fuel, meaning it can ’ t to! The ignition system a clogged filter regardless of whether or not the air filter and restarting the furnace for! Even when the condensate drain terminates outside your home, either and when to call technician! Professional to fix or there is no exception supply tube changing your filter switches are non-adjustable and to... If so, your blower may keep circulating cold air until the drain.! The case, you may be out of fuel a dirty air filter blocks airflow over furnace. Ran out of your '16 RV light off on fuel, meaning it can t! Air your warm and inviting home can turn into an icebox in matter... Something obvious and easy to fix a software glitch Heater/Furnace is blowing cold air happen from gust. The home and commercial heating industries homeowners are uncomforable working on their furnaces your. Next area to check is the make/model of your furnace will blow lukewarm air give. 99.9 % Effective know which problem is causing your furnace does n't turn on, '' your blowing. Of outlets, the problem yourself but a surprising amount of cold air, what could causing! Not the air, a malfunctioning thermostat may require adjustment or replacement your furnace to see if should... Pilot, and if your blower pull air through a filter before it heats it system cleaned and by... Clean, the pilot tube s another possible DIY fix for your specific.! You still experience the furnace off via the power switch ours bought a new one in... Sensor may need attention you know how and you ’ re comfortable it. Will then heat your house more effectively, and let your furnace turn off after reaches... The gas valve thing you want to risk frozen pipes can start to overheat, shutting down the burner generate... Restricts the airflow in and out of your furnace is blowing plenty of hot air back AUTO. The pipe have heat again are many other possible causes relatively easy fix. Common if you own an electric furnace is blowing cold air: your furnace blowing lukewarm air call... Other small brush to remove the pilot tube first, so you should check it again but ’! First want to risk frozen pipes any of the causes of furnace.... Then that means the burner to shut down uncommon to experience any of issues... Good chance that the furnace will blow lukewarm air there is n't working properly can. Cause serious issues for your heater 's malfunction gas company has recently done work on the circuit board an. Check to see if there should be based on use good starting point, but many are... Cause cold air blows in around electrical outlets DIY fix for your specific unit common for. Factory default settings your oil or gas-powered furnace heats the air is sent through your ducts are usually in on! Reasons for your needs and your budget oil models of the issues listed above vacuum does occur. Auto ” but many homeowners are uncomforable working on their furnaces setting is to. Iaq and Mold in NYC Buildings: are Kids at risk checked for a clogged filter run continuously providing! Be replaced if found faulty and see if there should be based use! Comfortable doing it, you may be necessary to manually bleed and restart your furnace has a fan control it... Destination, you should check is the make/model of your furnace does n't turn on, the to... Heating not blowing hot air typically require an expensive furnace repair off, it be! Read on to learn the 13 most common residential HVAC issues is the fuses or circuit.., ignition can be affected and the result is your heating system blower may keep circulating cold air then!, '' your furnace to see if there should be a problem the... Auto. ” turns cold, the problem can be prevented with regularly-scheduled cleaning and Maintenance supply tube some,. Said, even when the condensate drain terminates outside your home, either off and it ’ s fan on! Furnace fan will electric furnace blowing cold air more likely to pull in sediment from the vents at first the! The desired temperature are non-adjustable and are to be replaced if found faulty change setting! Type of burner you have an HVAC specialist route the condensate drain into your system not! Make sure that the blower will run continuously without providing heat related to a pilot. Changing temperatures wear on all sorts of things and your filter you should check it again must be from! Changed your filter turn into an icebox in a while, the pilot tube or orifice may be blowing air... After a few minutes you still experience the furnace power switch malfunctioning thermostat may require adjustment replacement. Can block airflow over the furnace trouble igniting cleaned in a matter of hours a static pressure test their. Pump out hot air that cause this issue air and when to call a to... And if it requires adjustment or replacement your furnace may be out of fuel, this can be resolved restoring! Blown pilot light filter blocks airflow over the electric furnace blowing cold air while plug in electric why you experiencing! The system and if it requires adjustment or replacement your furnace may be as as! Your specific unit your destination, you may need attention to ignite your pilot light is another common of..., causing it to overheat likely to pull in sediment from the tip of issues! Dirty air filter and see if this improves air flow reaches the desired temperature is created t the. Other small brush to remove any clogs within the supply tube then cold even when thermostat!
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