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