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. airheatman. Potential Problems. Top 3 Reasons a Furnace Blows Cold Air #1 – Your Thermostat Is in the ON Position Your thermostat has an ON and AUTO switch that runs your blower. During the cold winter months the last thing you want to have is furnace problems. In other words, it's not putting out any heat at all. A dirty air filter can block airflow over your furnace’s heat exchanger, which can cause it to overheat. As soon as the furnace cycles back on the air will warm up again. | Richard, love your website!! If yours is the color of mud, it’s a sure sign that it’s time to switch it out anyway. If it’s dirty, it may not determine if your burners are on. If you’re used to central air conditioners and furnaces, the air pump’s air may seem mild. If your central heating is … However, not as many people have experienced a central heating system that doesn’t work. Problem: Heater is blowing cold air. There are two different system types: forced air duct systems that push warm air with the aid of a blower into the system and vents, and gravity furnace systems that use convection currents to circulate the warm air. Air ducts are leaking. My central heater is blowing cold air, how do I check the heating. Here are just a few things that could mean: 1) Dead Batteries in Thermostat. Step 1 – Get Acquainted with Your Heating System. 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. To troubleshoot your central heating unit, start with the simple things that go wrong and work up from … When it is chilly, having a heater that is not working is a major cause of concern. Heat pumps have one drawback: They lose efficiency as the temperature drops. Heat Pump – If a heat pump is blowing cold air, its auxiliary heat strips might be malfunctioning or the level of refrigerant might be too low. What could be the problem and what can we do to start … Here’s why: The average body temperature is around 98.6 °F. My Central Heat Is Blowing Cold | eHow.com. 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 … The cooled air circulates throughout the house via the heat ducts then returns to the furnace as warm air to be cooled […] Sie können Ihre Einstellungen jederzeit ändern. Your furnace might be running just fine, but the air blowing out of your vents feels cold. Lee Sam Lee Sam. Wait a few moments for the cold air that’s already in the ducts to blow through, then see if it starts getting warmer. Or, even worse, you discover that it’s blowing cold air! In older models, verify that the pilot light is lit. Heating . Call a professional for inspection and repairs. Otherwise your electric heater or gas furnace will not turn on. Heating, Air Conditioning, Fridge, HVAC: electric heater blowing. Page top photo: Watch out: a return air inlet close to a gas heating furnace may be unsafe - see UNSAFE DUCT OPENINGS for details. The fan setting on your thermostat has two options, “on” and “auto”. The simple answer is: We can’t be sure. If you’re wondering why your heater is blowing out cool air, the first thing you should do is check your thermostat and make sure it’s set to the correct temperature. Problem: Heater is blowing cold air There is a reason for this – it works! share | improve this answer | follow | answered Mar 18 '17 at 8:20. 7 common reasons a heat pump blows cold air BEFORE READING FURTHER: Watch this video on how a heat pump works. The Heater is Too Big/Small – The heater’s size makes a difference to how well it works. 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. 1.Your Heater hasn’t had time to warm up. Verify that the circuit breaker controlling the system has not tripped. Well this happens sometimes and a few things can be the cause. This can cause the air to feel only lukewarm. If your heater isn’t working, it’s vital to learn what the problem is and fix it fast. I honestly don’t mean this to be insulting, but you’d be surprised at how many times people are shocked to learn that neither your air conditioning nor your heater will be cold or hot right after you turn them on. Another common problem for a heater blowing only cold air is that the pilot light might be out. Try kicking it up a notch to see if there’s a noticeable difference. 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