If your flame sensor is dirty, it may not recognize whether your burners have turned on. If this doesn’t happen after 10 minutes, then you are looking at another issue. When a heating cycle begins and your air handler turns on, that cool air will blow out of your registers before warm air does. Your ducts are usually in the attic and outside of your insulation, exposing them to the bitter cold. If you see frost on the outdoor coil, it is natural to the process and it is not a sign of any kind of malfunction- the reason the coil is cold falls back to the second law of thermodynamics- which states that energy always moves from areas of higher concentration to areas of lower concentration. If the air feels warm for a moment or two, then switches to cold, it may be that the flame sensor is dirty. This will lead to heat blowing out cold air. Do this: Try relighting the pilot light following these steps: Step 1: Turn off your furnace If you have a programmable thermostat, make sure that your thermostat is properly programmed. Electrical NC License: #L.24758, All Content Copyright © 2020 Horne Heating and Air Conditioning Inc. | Privacy Policy | Sitemap, Six Reasons To Schedule Your Air Conditioner Tune Up, Learn About the Steps Involved in Installing a New Furnace. Check with the folks that live with you to make sure they aren’t adjusting... 3. If you have ruled out number 1 and number 2 on the list, the next thing you want to consider is checking to see if you have a thermostat problem. Simply put, the furnace inside the equipment needs to get heated up for the fan to emit warm air. 7 common reasons a heat pump blows cold air BEFORE READING FURTHER: Watch this video on how a heat pump works. If you clear any debris or blockage and the problem persists, you could have a faulty heating element. We are a Missouri Synod Lutheran (LCMS) congregation. God's grace of all people in Christ. Check the Pilot Light on Gas Furnaces. Two thermostat issues that could cause your furnace to blow cold air include: Your thermostat is still set to COOL not HEAT Your thermostat fan setting is set to ON not AUTO We wanted to address this, as many times homeowners think this is an issue with their heating and cooling system, but if they have a heat pump, it's actually typically a very normal process. Don't panic if steam comes out of the top of the outside equipment. Our services are 9 AM each … If the furnace is cold, it cannot heat the air being propelled outside. The sacraments of Baptism and Holy Communion. A Note About Our Hours and COVID19: Open As Usual! This is something you can easily fix yourself. If cool air continues to blow out, the first thing you should check is your coolant level. Clogged air filters could be causing cold air to blow out of your vents. If it’s a particularly cold day or night, your heat pump might just be blowing air that’s cooler than your body temperature, making you think it’s cold. Solution: Change the air filter and see if your furnace starts only blowing warm air. Basically, the furnace isn’t lighting the fuel, meaning it can’t heat your home, either. 1.Your Heater hasn’t had time to warm up. Is someone else adjusting the thermostat? When a heat pump begins the defrost cycle, the outdoor fan shuts off and the system switches over to cooling mode. Why Is My Furnace Blowing Cold Air? At Precision Heating & Air, this is a common problem we’ve seen with furnaces in Atlanta.There are several possible causes for a furnace blowing cold air. Below are some reasons you may be getting a blast of chilly air and how you can warm up your house as soon 1as possible. 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. A lack of heat can be a symptom of a much larger problem. Even if you have a gas furnace, they typically have an electric starter that ignites the gas burner. You see, a heat pump heats your home by moving heat from the outdoor air into your home. Why is My Heating System Blowing Cold Air? 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. Your furnace may be blowing cold air because the filter is too dirty. This is when the fan kicks back on and all of the frost that ran down to the bottom of the coil in the form of water is pushed out of the top of the unit, sometimes in the form of steam. If your heater turns on but it’s blowing cold air, turn it off and check to make sure there’s nothing obstructing the blower. People’s comfort level where indoor temperature is concerned can vary. Rebecca, if I were close to where you live, I would come out and take a look at your system and … HVAC & Plumbing NC License: #16764 COVID-19 Update From Ideal Energy--Keeping Customers & Employees Safe. Over time, the changing temperatures wear on all sorts of things and your ductwork is no exception. A dirty air filter can block airflow over your furnace’s heat exchanger, which can cause it to overheat. When your furnace isn’t running, the air in your ducts cools down. The flame sensor tells your gas heating unit to turn on and warm the air that is cycling through. If your furnace seems to be blowing cold air, it could be a problem with the ignition system. Have an expert inspect your ducts along with the furnace. This might sound crazy, but a heat pump can be working just fine even if the air feels cold. When your furnace blows cold air, try turning the heating unit off and on. Coolant not flowing through the heater core. There are many issues that can cause your heater to blow cold air. As the frost builds up on the outdoor coil, it could potentially inhibit the ability for air to flow across that coil. Turn your thermostat from HEAT to OFF. It will make all our explanations make way more sense. These issues are the most common ones that arise and result in your heating systems inability to warm the air and you receiving the cold blast from your air vents instead of the heated air you want. You may also see an error message on your thermostat, or a blinking LED light on the furnace control board. The lukewarm air coming out of your furnace can also be the result of leaky air ducts. If you’ve just bumped up the temperature or if you’ve just turned your furnace... 2. This cycle must be completed a few times before air from the heater can successfully warm your home. If you have an electric furnace, a tripped breaker can cause problems and heat won’t be able to circulate through your home, in fact, the system may not run at all. It can also prevent them from igniting. Air in the cooling system. Next, if your thermostat runs on batteries, check those to make sure they are not week or dead. 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. Air ducts are leaking. If this is the case, you’ll have to replace it with a part that has the same voltage and wattage. Don't know if you have a heat pump? There could even be a puddle of liquid under the front of the vehicle. Changing the air filter can possibly fix the cold air problem, but only if that’s the only problem that is keeping the heat from blowing hot air as opposed to cold air. If your pilot light refuses to remain lit, this is an indication of a problem that will need to be fixed by a professional. Frost on the outside coil is condensation that forms up on the coil in the form of frost. The dirty air filter will block airflow, causing the furnace to run longer to heat your home until it overheats. If you only feel your furnace blowing cold air briefly, and the air is quickly replaced by warm air, this is … If you’ve just bumped up the temperature or if you’ve just turned your furnace on all together, it may just be as simple as your heater needs some time to warm up. Also, why is my heater blowing out cool air in my house? 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. Don't panic if you see frost on your outside equipment's coil. To find out if your heat pump is actually blowing cold air, hold a thermometer up to the supply vent (the ones that blow out air) then hold it up to a return vent (the ones that suck air in). This can cause the air to feel only lukewarm. And you wait — and wait — but the heater just blows cold air. Again, this will result in cold air being pushed through the system. The first thing you have to do is check to see what type system you own. HVAC & Electrical SC License: #M111708 While the system is in cooling mode, the frost that had built up on your outdoor coil then turns to water, runs down the outdoor coil, and piles towards the bottom. Perhaps your temperature gauge is running below normal. There are other reasons your heat pump could be blowing cold air instead of heat, but those are the basics. 6805 Craig Street This time of year, especially when it gets cold outside in the evenings, we get many calls from homeowners concerned that there is cold air blowing out of the duct registers in their home when their heat is running. Don't panic if you have a heat pump and if cold air blows out of your duct work for a little while on and off while you run your heat at home. It's all part of the process of heating your home with a heat pump! Check out this article, on how to tell if your unit is a heat pump or air conditioner. There are many reasons your car's heater isn't working. Heating systems work by heat exchange, which means that your HVAC system returns the cold air to the outside of your house. For example, if you have your thermostat set on the ”on” position instead of “auto”, the furnace will continually run, even if it isn’t on the heat cycle,. If you experience this problem, this list may help you discover the issue and make the fix. 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. The air coming from your supply vent should be anywhere from 15-30 degrees hotter than the air near your return vent (depending on how cold it is outside). If you see steam coming out of your outdoor coil that is a normal operating procedure for a heat pump system, so don't be alarmed. Naturally, all heaters use a fan to blow air, but if your fan setting is set to ‘on’ throughout the day, it explains why the heater seems like it has malfunctioned. Charlotte,NC 28214 He called me over to help repair his system. Some other issues that may be causing your heat pump to malfunction include, low refrigerant, bad valves or a faulty metering device. 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