https://flheatair.com/why-is-my-heater-blowing-cold-air-and-what-should-i-do Note: In some cases, your heat pump’s AUX heat could be a gas furnace, but since Phoenix typically has mild winters, some AZ homeowners will have electric resistance as their AUX heat. Why a Heat Pump Will Blow Cold Air. Generally speaking, a heat pump will produce air that is about 55 degrees warmer than the outside air. (Heat works when it’s 55 degrees out … In other words, it's not putting out any heat at all. Check the furnace’s air filter. Give us a call or contact us online . A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. If the furnace is cold, it cannot heat the air being propelled outside. 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. 2012 Base model 1.8NA I changed heater core over the weekend. When overheating, your furnace can trip a high limit switch, causing the furnace burners to shut off so that the heat … When your heat pump sometimes blows cold air even when the setting for heat is on, it’s an alarming problem and depending on the cause, a common enough one. Also radiator fan does not come on. Have you cranked up your thermostat to knock the chill down only to discover that your heater is What could possibly be the problem? 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. Below is a list of possible causes. Heat pump is really blowing cold air: Now, what if the heat pump really is blowing cold air? Compromised flame sensor. Your furnace may be blowing cold air because the filter is too dirty. Items in red usually require a service call. 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. The important thing to remember is that “AUX” heat is fast and dependable but it’s also more expensive than heat transfer heating. Well this could be caused by several things. We’ve been helping homeowners in the Minneapolis-St. Paul metro area with their heating, plumbing and air conditioning problems since 1916. Still blows cold air. Have an expert inspect your ducts along with the furnace. If you live anywhere in the Twin Cities area and your furnace is blowing cold air (or not working at all), MSP Heating can help. It could even be running in the air conditioning mode due to a malfunction. Gets up to temp and still nothing. 6. When a heating cycle begins and your air handler turns on, that cool air will blow out of your registers before warm air does. There are two possible routes here, one of which many homeowners who are new to heat pump systems encounter. Has a full tank of coolant. Simply put, the furnace inside the equipment needs to get heated up for the fan to emit warm air. Here’s the downside of a heat pump: The warmth of the air it produces is entirely dependent upon the outside temperature. 11. If your Oil Furnace is Still Blowing Cold Air, Check Your Flame Sensor. When your furnace isn’t running, the air in your ducts cools down. Two Reasons Your Heat Pump Is Blowing Cold Air. If you only feel your furnace blowing cold air briefly, and the air is quickly replaced by warm air, this is …