If your gas company has recently done work on the gas lines, it's not uncommon for your pilot light to blow out. HVAC systems can be confusing, but one thing’s for certain: Your furnace should blow hot air, and your air conditioner should blow cool air. There is a reason for this – it works! The nest seems to blow warm air normally but once it switches to alternative heat source, then it starts blowing cold air. Basically, the furnace isn’t lighting the fuel, meaning it can’t heat your home, either. "dayOfWeek": [ "addressLocality": "Cincinnati", If gas supply is interrupted for any reason, the gas furnace pilot light will go out. While doing so, use a lighter or match at the pilot end to light outgoing gas. But on the rare occurrence it does, there wouldn't be any air blowing over the heat exchangers which would cause your furnace to go off. "Tuesday", If this doesn’t fix your problem, and your furnace is still not blowing hot air, you can move on to some of the other potential culprits. This problem only started recently when it started going from fall to winter. Most folks are aware of these two appliances, as well as their uses. 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. Find the filter compartment on your furnace, remove its access door if applicable. If your gas furnace is blowing cold air and won't shut off, it could be related to a blown pilot light. Replacing the filter should solve this issue. "image": "https://apollohome.com/wp-content/uploads/2018/04/logo-edited.svg", When I installed my Nest thermostat it was blowing hot air instead of cold. The pilot light needs to be relit to burn fuel and heat your home. If it’s … Still Have a Heater that is Blowing Cold Air? COLD – Continue to the Thermostat Functionality section. NO AIR – Continue to the Furnace or Heating System section. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. Insert a new one of the same dimensions into the filter compartment. Turn the reset switch to PILOT. Outside of a heating cycle, the furnace could be blowing cold air because of a settings mistake. Your furnace may be blowing cold air because the filter is too dirty. 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. Don’t settle when your furnace is blowing cold air when complete comfort is just a phone call or click away! If your ducts are leaking (and ENERGY STAR says that almost all homes leak about 30% of the air in their ducts), cold outside air is making its way into your ductwork. The longer you run a broken furnace, the greater your chances of inflicting permanent or serious damage. "@context": "https://schema.org", Our technicians thoroughly investigate this issue to make an accurate diagnosis and swiftly repair your heating system. "url": "https://apollohome.com/", Once the pilot is lit, turn the switch to ON. When the furnace kicks on, the air you feel should be warm. If the filter becomes clogged, the unit can start to overheat and cause the burner to shut down. When your pilot light is out, an otherwise perfectly functioning furnace will not provide heat for your home. goes out, the furnace will blow cold air because combustion of fuel is not taking place. "Wednesday", One of the most common causes of a furnace blowing cold air is not actually a repair at all. If this does not correct the problem, call for furnace repair. You Own a High-Energy, Two-Stage Furnace. Locate the pilot light assembly and turn the reset switch to OFF. Pilot Light. … "longitude": -84.41778099999999 When the furnace fan is on, air blows constantly through the vents in your home. Is the Pilot Light lit? "closes": "23:59" Follow the condensate drainpipe that extends from below the pan to its exit outside your home. Filters of a Furnace Blowing Cold Air. "priceRange": "varies", With the AUTO setting chosen, your furnace should only run the fan during a heating cycle and not push cold air through your vents in between. So if the fan is on, the air that gets distributed throughout your living space may sometimes feel cool. This can cause the air to feel only lukewarm. However, fixing the problem can be easier than you think. Notice: The health and safety of our customers is our top priority, not to continue doing business as usual while taking extra precautionary measure "@type": "PostalAddress", "Saturday", This air might not always be cold, and could be room temperature as well. only during these concerning times, but always! Clogged oil filter. }, The middle of a harsh Ohio winter is no time to be confronted with a. . Air Flow . WEAK HEAT (WARM) – Continue to the Fan section. Pilot light is out If your gas furnace is only blowing cold air, then the pilot light may be out. Dirty air filters restrict airflow into the furnace keeping the heat from escaping. But troubleshooting common furnace problems is a little less straightforward. A furnace that blows cold air could also indicate that it is overheating. "geo": { To protect the heater from malfunctioning altogether, engineers embed automatic limit switches that are responsible for turning the heat-generating furnace off. In fact, one of the most frequent questions homeowners ask about HVAC issues is, “Why is my furnace blowing cold air?” That’s definitely a sign something’s wrong with your furnace! "@type": "OpeningHoursSpecification", Office Address Check to … Make sure the switch is set to AUTO, not ON. ] To troubleshoot a misbehaving gas furnace, start with the easiest explanations and solutions, then work your way to the most complicated. Go to your thermostat and take a look at the fan setting. "Friday", 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 fan only runs when your furnace is heating the air, then you’re much less likely to experience your furnace blowing cold air. Typically, re-lighting the furnace pilot light and waiting a few minutes will solve the problem. Going from Honeywell thermostat to NEST. "openingHoursSpecification": { Major duct issues. The middle of a harsh Ohio winter is no time to be confronted with a furnace blowing cold air. If your furnace seems to be blowing cold air, it could be a problem with the ignition system. to schedule furnace repair. That may be a quick and easy fix. There could be several reasons for this, so it’s always a good idea to troubleshoot your furnace, especially as it can help the heating engineer who eventually will … There … "https://twitter.com/apollo_hvac", If your furnace continues to blow cold air then you should check if you have a two-stage furnace. A dirty furnace filter is the root cause of many problems. "opens": "00:00", The pilot light needs to be relit to burn fuel and heat your home. Check the gas valve to ensure it is on and provides the fuel to create the heat. If the coast is clear, turn off the furnace before inspecting any further. The “on” setting means that the furnace fan will be running even when the furnace itself is off. I tried turning the power off in unit as well as electrical supply waiting 5 Mins then turning it back on. "Monday", Furnaces aren’t running 24 hours a day (unless you’re constantly increasing the temperature in your home). These 5 fixes can solve most furnace problems without you needing to pay for a repairman to come out. Leaks in the ducts allow heat energy to escape, so once heated air reaches your living areas, it doesn’t feel so warm. Contact Blanton’s Air at (910) 249-4898 for all your Fayetteville or Raleigh, NC HVAC and plumbing needs. and steps during the times of COVID-19. This usually arises if you haven’t changed your air filter routinely. }, "streetAddress": "4538 Camberwell Rd. "address": { Our technicians thoroughly investigate this issue to make an accurate diagnosis and swiftly repair your heating system. If your heater stops blowing after a short period or starts emitting cold air, it might be a good idea to check if the furnace is working fine. Do this: Turn off your furnace at the thermostat, and check the furnace filter. If you have large holes and leaks in your air ducts, cold air from your crawlspace … The lukewarm air coming out of your furnace can also be the result of leaky air ducts. "https://www.youtube.com/user/ApolloHomeComfort", Here are three possible explanations for the cool air coming out of your furnace vents. When a furnace blows cold air, there may be an issue with the unit’s electronic control panel. You want to curl up in a cozy house after you deal with harsh weather conditions, so it’s time to take a look at the reasons the furnace may be blowing cold. High-efficiency furnaces produce condensation, which normally exits the system through the condensate drain line. It ’s not too late to winterize your home heating and cooling systems with these essential HVAC maintenance steps. ], It could be that your heater is working just fine. This is sometimes easily solved by resetting the system. Once the furnace cools down, it should restart. "sameAs": [ Pilot lights used to be a standard component on any gas furnace before the 1990s. Duct leaks need to be pinpointed and repaired by a professional to resolve heat loss. Lighting & Ceiling Fan Installation & Repair. If your furnace’s blower fan is set to run continuously, it runs even when the system is not working to produce heat. "https://g.page/apollohome" What best describes the air coming out of your vents? Size is not a matter of preference. First, check to ensure there are no grizzly bears. The furnace blowing cold air, or there is no heat in the house. In this case, you could feel cold (or non-heated) air blowing through your vents because the system is not actually on to heat it. "addressCountry": "US" Attach your wet/dry vacuum to the opening to suck out clogs. The fan setting on your thermostat has two options, “on” and “auto”. To help cool the heat exchanger down, the blower motor will continue to run, which will eventually cause the furnace to blow cold air for a short amount of time. The sound you hear is the reversing valve switching your unit over to cooling mode. 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. Make this the year you commit to a regular furnace maintenance plan, and reap the (warm and cozy) benefits for years to come. 3. Outside of a heating cycle, the furnace could be blowing cold air because of a settings mistake. The fix: Duct sealing. }, Furnaces can overheat from having dirty air filters. However, if the light extinguishes again, or refuses to light, it’s a sign that professional help may be required. "postalCode": "45209", Frost on the outside coil is condensation that forms up on the coil in the form of frost. When this happens, your system will be unable to produce warm or hot air. If the furnace is on, but the system continues to blow cold air, this is not normal, and there is a problem with the system. "https://www.facebook.com/apollohome1/", Some are easy to pinpoint and can even be fixed yourself. If there is a blockage in the line, the system’s overflow kill switch turns off the unit to prevent water damage. Leaks in your ductwork means that cold, unconditioned air from inside your attic gets sucked into your ductwork. Replacing your thermostat ensures accurate communication with your furnace to stop cold air issues. Check the furnace’s air filter. Turn off power to the unit at the breaker. Have your thermostat replaced by your HVAC technician, and consider upgrading to a programmable or smart thermostat for better control over indoor comfort and energy consumption. Heater blowing cold air; Furnace won’t turn on; First, Check Your Thermostat Setting. Your furnace may be blowing cold air because the filter is too dirty. Remove and clean the pan with mild dish soap and water, then replace. level 2 If it doesn’t, you may need. Make sure the switch is set to AUTO, not ON. Details. An overtaxed furnace will often overheat and malfunction, and end up blowing cold air. If your forced-air gas furnace is blowing cold air, a number of factors could be to blame—many of which you can address on your own, without the immediate help of a service professional. If you are unable to relight the pilot or it keeps going out, call for furnace repair. "https://www.linkedin.com/company/apollo-heating-cooling-and-plumbing", This is a sign of serious damage, and should be addressed by a professional ASAP, before further damage is inflicted. It's also possible that the furnace's pilot light isn't well shielded. Maybe your furnace is blowing hot air, but it sounds like it’s housing a small family of grizzly bears. Check It’s Size. You want to curl up in a cozy house after you deal with harsh weather conditions, so it’s time to take a look at the reasons the furnace may be blowing cold. "telephone": "513-268-8400", It blows cold air instead. An overheated furnace will cause cold air to emit from vents. Furnaces can overheat for a variety of reasons, including: Here ’s what you need to do in NC. Works for 10 seconds,red light blinks quickly and thermostat shows unit is heating but then cold air comes out and light returns to blinking slowly. It's possible your furnace will run when the blower motor is off; however, that's rare. Do you have a gas furnace? A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. If your furnace’s pilot light goes out, the furnace will blow cold air because combustion of fuel is not taking place. Wait 10-15 minutes to allow any escaped gas to clear the area. 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Filter is clogged, the furnace ’ s housing a small family of grizzly bears seems to be re-lit with.

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