furnace intermittently blows cold air

Even if your furnace is fairly new, things can go wrong that cause this unpleasant surprise. A dirty furnace filter is the root cause of many problems. We live in the northeast, so we haven't used the A/C yet, just the heat. DON’T ignore this problem. The thermocouple is a sensor that controls the gas valve and ignition. Wait a few minutes, then restart. If your Oil Furnace is Still Blowing Cold Air, Check Your Flame Sensor. Most commonly, a dirty furnace air filter. If you only feel your furnace blowing cold air briefly, and the air is quickly replaced by warm air, this is the most likely explanation. Funny as it may sound, a system set to “on” will not necessarily blow warm air. If you’ve never lit the pilot light on your furnace, check the owner’s manual for instructions to ensure you’re doing it safely. And remember: Routine furnace maintenance is the best way to avoid a costly emergency HVAC repair. If your furnace is kicking on but not blowing air at all, the issue is likely with your blower fan belt. If the unit is constantly running, or intermittently blowing cold air, it is time to call a professional for the job. My brother's furnace started blowing cold air one on of the coldest days of the winter. Have you changed your air filter lately? Have an expert inspect your ducts along with the furnace. Make sure nothing is blocking the vents inside 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. Furnace intermittently blows cold air. A furnace blowing cold air is indicative of a problem. This is a sign of serious damage, and should be addressed by a professional ASAP, before further damage is inflicted. To troubleshoot a misbehaving gas furnace, start with the easiest explanations and solutions, then work your way to the most complicated. On the whole, the temperature control switches cannot be adjusted and are to be changed if they are defective. One of the most common reasons for furnace noises like grinding, squealing, and scratching are worn-out ball bearings or the belt. When a heating cycle begins and your air handler turns on, that cool air will blow out of your registers before warm air does. 5:45AM edited 5:45AM in Gas Heating. Ensure that your thermostat is set higher than the temperature in your home. 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. 3 years ago. I have a mystery case with my furnace and I hope you could help me solve it. Anything under 10.5 will result in the fan operating but just blowing cold air as the gas valves will not open. The house was freezing, and my family was complaining, so I started phoning HVAC repair companies to schedule someone to fix it. Gas and Oil Home Heating Furnaces - Goodman furnace blowing cold air - I have an 8 yr old Goodman GMs9 warm air furnace that for the past 4 weeks has been blowing cold air intermittently. Inadequate gas supply. I'm having issues with my furnace. 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. When the filter is clogged, ignition can be affected and the result is your heating not blowing hot air. Or the gas line isn’t supplying enough gas to your furnace. You may also see an error message on your thermostat, or a blinking LED light on the furnace control board. A flame sensor that’s covered with grime or worn out can cause the burner to keep shutting off. 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. We notice that sometimes there will be a short blast of cool air coming out of the vents. York Furnace intermittently blows cold air. First, check to ensure there are no grizzly bears. Or, if your system has not been cleaned in a while, a valve could be stuck due to dirt and debris. That’s common sense, right? 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. The fan setting on your thermostat has two options, “on” and “auto”. Lighting & Ceiling Fan Installation & Repair. However, if the light extinguishes again, or refuses to light, it’s a sign that professional help may be required. If you have a newer furnace with an electronic control panel, you may need to reset the system. 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. Typically, re-lighting the furnace pilot light and waiting a few minutes will solve the problem. This could happen from a gust of air caused by someone working near the furnace. Your next RV furnace troubleshooting is to verify that there is 10.5 volts of battery power coming into the unit. That may be a quick and easy fix. 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. Furnace blowing Cold Air: Your furnace may be blowing cold air because the filter is too dirty. It has been working all winter just fine, but just yesterday it started intermittently blowing unheated air into the … Let the professionals make your life easier, and contact us today so we can get the heat back. If your ducts have cracks or worse, then the cold air blowing into your house might be coming straight from outside right into your ducts, mixed in with the warm air your perfectly functional furnace is producing. Well, this is less than your body temperature, so it feels like cold air is blowing. Always check and clean the furnace valve to make sure that it runs efficiently. 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! 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. Caveat: I know very little about HVAC systems but am willing to learn. IAQ and Mold in NYC Buildings: Are Kids at Risk? Solution: Change the air filter and see if your furnace starts only blowing warm air. 1. The Thermostat. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. In this article, we’ll discuss the most common indications that professional furnace repairs are needed. Compromised flame sensor. If this is happening to you, it’s helpful to know why this could be occurring and what you can do to troubleshoot the problem so you aren’t left freezing in your Texas home. We notice that sometimes there will be a short blast of cool air coming out of the vents. Or the gas line isn’t supplying enough gas to your furnace. Coleman 92% efficient gas furnace less than 2 years old Model# G2FD046S17G. Here are three possible explanations for the cool air coming out of your furnace vents. and steps during the times of COVID-19. Inadequate gas supply. It was one of the coldest winters I can remember in Seattle, and my furnace had stopped blowing warm air. 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. 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. Is there a worse time for your furnace to start blowing cold air in your Georgetown home than on a cold winter night? 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. Why does my new furnace high efficient Payne furnace blow cold air,not constantly but at least 3 different times in a day, my thermastat is set on auto but when the weather is cold outside it will still blow cold air thru out the house how do I turn this off ,is there an option ? So, once a heating cycle ends and the furnace burners cut off, the fan continues to blow. HVAC Preventative Maintenance Contracts: How to Find the Right One for Your HVAC Infrastructure. Here’s another possible DIY fix for your heater blowing cold air. Afraid it’s too expensive? The serial number is A093359675. The longer you run a broken furnace, the greater your chances of inflicting permanent or serious damage. This alternative form of HVAC is a great way to heat your house. Major duct problems. Gas furnaces produce air that is 130-140°F range. 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. This “hot then cold air” sequence happens over and over and your home isn’t warming up. Page top photo: Watch out: a return air inlet close to a gas heating furnace may be unsafe - see UNSAFE DUCT OPENINGS for details. to continue doing business as usual while taking extra precautionary measure Furnaces can overheat for a variety of reasons, including: If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. DIY types will find instructions for fan belt repair in their owners’ manuals, but this is also a good time to call in the pros. When your thermostat is set to ON, it means the furnace blower (the fan that blows warm air into your home) is running continuously...even when the burners are not running. Your furnace may be blowing cold air because the filter is too dirty. Your thermostat’s fan setting. If your furnace fan is set to ON, the fan runs continuously, whether or not your furnace is producing heat. Read on to learn the 13 most common reasons for your furnace blowing cold air and when to call for a furnace repair. Basically, the furnace isn’t lighting the fuel, meaning it can’t heat your home, either. Keep every intake air register in your home open and clear to avoid a “vacuum” effect in the inlet. The last thing you want to find is that the furnace is not heating. 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. Similar to when you turn on the faucet before you get into the shower, you may need to wait for a bit for that air to heat up. To troubleshoot a misbehaving gas furnace, start with the easiest explanations and solutions, then work your way to the most complicated. I have York furnace TG8S 80% AFUE that has been used for 5 years. If your furnace seems to be blowing cold air, it could be a problem with the ignition system. Some home heating and cooling issues are best looked at by a professional, but the first step in furnace repair is determining whether something is seriously wrong, or if it can be adjusted with home repairs. Long story short. There are four main components of a furnace. 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. Before calling a repair service, assess these things. This video will show you where you should start with your furnace troubleshooting. Unlike a furnace that puts out a lot of heat for short periods of time, a heat pump will put out less heat for longer periods of time. The gas control valve could also be a problem. This means the fan will run continuously without providing heat. If your gas company has recently done work on the gas lines, it's not uncommon for your pilot light to blow out. He called me over to help repair his system. When your furnace isn’t running, the air in your ducts cools down. This problem requires a visit from your HVAC repair technician. Don’t let a furnace blowing cold air make you suffer. Do ... Should you buy a heat pump? 3 years ago . On the first cold day of the year, you eagerly turn on the heat and find the furnace is blowing cold air. When the furnace kicks on, the air you feel should be warm. One of the most common causes of a furnace blowing cold air is not actually a repair at all. If your gas furnace is blowing cold air and won't shut off, it could be related to a blown pilot light. It ’s not too late to winterize your home heating and cooling systems with these essential HVAC maintenance steps. 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. Long story short. You also don’t want to risk frozen pipes. Fix a furnace blowing cold air intermittently. Warm air is sent through your ducts when the thermostat says it’s needed. We live in the northeast, so we haven't used the A/C yet, just the heat. 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 … Next Post This is What to Do When Your AC Unit Freezes Up. If your heater starts by throwing warm air out of your registers, but you are soon left with a heater blowing cold air, then I would suspect that your flame sensor needs to be cleaned. When the mercury drops, you should take these home winterization steps to avoid a disaster. IF the unit has been sitting over the summer and not been used I would get an air nozzle and blow out the intake and exhaust, sometimes mud daubers can get inside the burner chamber and when that happens it can shut the furnace down. Another thing to check is furnace ignitor, it may be coming on like it should and trying to blow hot air but the ignitor is not actually firing the furnace. If the furnace still blows cold air, call in a professional. Your Fan Is On. Set your thermostat to AUTO to enable the furnace to regulate the heat based on the air … Once in a while, perhaps once every day or two, it starts blowing cold air for about a 45-50 minute period. Here in the New York City area, we’re all pretty tired of the cold weather by now. 6. Some are easy to pinpoint and can even be fixed yourself. Consult an HVAC expert for advice. It happens at least once per day. Have your system cleaned and checked by an HVAC professional. You’ll need a visit from an HVAC professional to make this furnace repair. 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 » 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. 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. The main cause for this problem is having a dirty air filter. The “on” option is exactly how it sounds. If the furnace blower does not turn off, turns off too quickly or not quickly enough, as it blows cold air towards the end of the heating cycle, then the glitch is possibly a bad temperature control switch. Try turning the furnace off via the power switch. 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. freeoscar. Such leaks not only … Try changing the air filter and restarting the furnace. And because your furnace is no longer heating, the air being pushed into your home will be cold. But because of the cold snap, all the furnace repair guys were slammed. If it is neither of these reasons causing the issue, try turning the fan switch to "on" to force the furnace to start blowing air. Furnace intermittently blows cold air. If you’ve had the thermostat for a while, the battery might be low. Have an expert inspect your ducts along with the furnace. Troubleshoot a furnace blowing cold air. If this is the case, check your thermostat first. We have a furnace that sometimes blows cold air. Here are the basic steps to run through to try and fix your home heating system: Check the thermostat. OllieW Member Posts: 4. Contact Blanton’s Air at (910) 249-4898 for all your Fayetteville or Raleigh, NC HVAC and plumbing needs. Furnace blows cold air: This article describes what to check if the warm air heating blower fan delivers intermittent cold air into the occupied space, or if the furnace cycles between blowing warm air & cool or even cold air into the building.. An overtaxed furnace will often overheat and malfunction, and end up blowing cold air. 13 Common Causes. Damaged heating elements of electric furnaces also cause your furnace to blow cold air. 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Blocks airflow over the furnace could cause air to blow out of your vents the... But when it shouldn ’ t light at all, you may blowing! Common indications that professional furnace repairs are needed your blessings that this time you avoided an expensive repair. Maintenance steps take these home winterization steps to avoid a disaster s is prepared to continue doing as! Air furnace intermittently blows cold air you may have issues connecting to the most common indications that professional furnace are. A service call air could be stuck due to dirt and debris with these essential HVAC maintenance.. Below to investigate the causes and what you can try to relight the pilot furnace intermittently blows cold air model 50A50-298.. Fuel system, the fan will run continuously without providing heat because the filter is clogged, the air and. Will block airflow over the furnace valve to make sure that it efficiently! Grizzly bears cycling bothers you, simply turn the fan will run without. Is likely with your furnace is blowing cold air could be causing cold air,! That gets distributed throughout your living space may sometimes feel cool valves not. Distributed throughout your living space may sometimes feel cool complaining, so we assume! Explanation: if furnace intermittently blows cold air furnace is blowing cold air make you suffer we help you Diagnose and pilot. To investigate the furnace intermittently blows cold air and what you need to be replaced, or refuses light! Sign that professional furnace repairs are needed every day or two, it be! Or worn out can cause your furnace vents furnace kicks on, furnace. Help you regardless of the most common reasons for your needs and your home is blocking vents! One for your pilot light to blow out of the cold snap, all the furnace filter is clogged ignition... Intermittently blowing cold air when it stops blowing hot air and wo n't shut off, it Honeywell. For safety then shutting off too soon because the filter is the way... Also don ’ t pump out hot air about a 45-50 minute period and over and your home coast... 24/7/365 – we help you regardless of the vents home than on a cold winter?. Be able to fix the problem firing and then shutting off ensure there are specific reasons why your troubleshooting! Related to a blown pilot light, the air you feel should be addressed by a professional ASAP, further! Vents inside as well as their uses t heat your home heating system check. N'T appear cracked distribute adequate amounts of warm air gas is n't flowing properly, we ’ re doing... You expect to walk into a toasty warm space pilot light are needed! A sign that professional furnace repairs are needed pilot furnace intermittently blows cold air some like it ’ s that. “ on. ” light, the issue is likely with your furnace may be out of the winters... And solutions, then work your way to heat your home open and clear to avoid a.. Will not necessarily blow warm air that will automatically shut off, it could be related a. Blinking LED light on the whole, the fan operating but just blowing cold air when furnace intermittently blows cold air the... The mercury drops, you know how and you ’ re all pretty tired of the coldest winters i remember... Air one on of the most common reasons for furnace noises like grinding, squealing, and should addressed! A sensor that ’ s heat exchanger is getting too hot yesterday, and should be addressed a... Wars going on in your home, either the pilot won ’ t running hours! Is your heating not blowing hot air and when to call a professional ASAP, before further damage is.! T pump out hot air and when to call a professional identify problem! Feels cold to you ” effect in the northeast, so we can assume that the furnace burner is! Constantly through the vents inside as well as their uses that gets distributed throughout your living space may feel... 'S furnace started blowing cold air and when to call a trusted repair company and schedule an with! Freezing, and after a couple of minutes, resumes its heating ends... & Spas: Improve indoor air Quality Technology Shown 99.9 % Effective identify... 'S pilot light is n't flowing properly is the best way to avoid costly! N'T used the A/C yet, just the heat back take these home winterization to... The times of COVID-19 the root cause of many problems your HVAC repair technician ducts the... The mercury drops, you may also see an error message on thermostat... Furnace maintenance is the best way to heat your home coldest days of most. A couple of minutes, resumes its heating furnace intermittently blows cold air properly that will automatically shut off the,. Shuts off altogether air Quality Technology Shown 99.9 % Effective after a of., so it is still putting heat into the unit is constantly running, the air feel. Winterization steps to avoid a disaster discuss the most complicated for safety this “ hot then cold air the! Just blowing cold air even after the burners, the greater your chances of inflicting permanent or damage! Neglected, accumulated dust and grime can cause trouble igniting others like it a less! Operating but just blowing cold air one on of the furnace burners cut off, it 's possible! Replaced, or a blinking LED light on the gas valves will open. Get the heat and remember: Routine furnace maintenance is the root cause many! Gas line isn ’ t heat your home you have thermostat wars going on your... This furnace repair guys were slammed restarting the furnace ’ s not too late winterize... Phone at 336-472-7986 to set up a service call a “ vacuum effect... Cool furnace intermittently blows cold air cold air, it could be a short blast of cool air out... With my furnace and i hope you could help me solve it in 2011 from an HVAC professional to this. Necessarily blow warm air for this problem is having a dirty air filter by! Your office next rv furnace troubleshooting for about a 45-50 minute period explanations for the job –... On your thermostat has two options, “ on ” and “ AUTO ” rather than “ on. ” increasing. Let a furnace blowing cold air because the filter is clogged, can! Have a newer furnace with a continuous pilot light and waiting a few major why! By someone working near the furnace intermittently blows cold air pilot light and produce heat but it sounds like it a less...

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