There could be two possible causes for this: The thermostat fan is set to “ON” The fan in the furnace is responsible for blowing heated air through the vents. Why Is My Furnace Blowing Cold Air? The thermostat (ecobee 3 lite) is set to 69, the room is reading 67, and the fans seem to be blowing cool air. AB08 Bladeless Heater Fan, 1900W Space Heater & 10 Speeds Tower Fan, 28 inchs Air Circulator Fan for Home, Officer & Living Room (White/Silver) 4.4 out of 5 stars 39 £175.00 £ 175 . An electric heater that blows cold air could be caused by one or more of the following reasons: The manual reset has tripped. Generally speaking, a heat pump will produce air that is about 55 degrees warmer than the outside air. ), so the temperature actuators generally fail first. At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater … Issue resolve - Fan but no heat - 2014 Wrangler Unlimited Hi guys - ... Just joined the forum today and found it by searching "Heater blows cold air" in Google. So you’ll quickly feel warm air instead of cold air at your vents. Discussion Starter • #1 • Oct 3, 2005. AC works. At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater … Ocean Loong AB09 Bladeless Heater Fan, 1900W Space Heater & 9 Speeds Tower Fan, 32 inchs Air Circulator Fan with Remote Control, Grey/Silver 3.5 out of 5 stars 39 £189.00 £ 189 . The fan switch is “on” and the thermostat setting is below the actual temperature; The fan is dispersing this air after shutdown; There may be a loose wire coming from the elements; The heater element may be defective A fan then blows across this heated piping and into your cabin. Other Reasons a Car Heater Can Blow Cold . There are many reasons your car's heater isn't working. In a dual zone system, you wind up with a blows cold one side, hot on other side condition. Perhaps your temperature gauge is running below normal. The fan is not called a heater fan, sorry to disappoint you, because it blows air into the car for the air conditioner as well. If the heat is blowing, but blowing cold, it has something to do with the coolant getting to the heater core, or the heater core itself. The Heater is Too Big/Small – The heater’s size makes a difference to how well it works. Here’s the downside of a heat pump: The warmth of the air it produces is entirely dependent upon the outside temperature. If the heat is blowing, but blowing cold, it has something to do with the coolant getting to the heater core, or the heater core itself. Anybody had any issues with these? A new door actuator costs less than $100. 00 £239.00 £239.00 What would cause the heat setting to send cold air (this was during winter)? Maybe the fan is malfunctioning. You can usually diagnose and fix the problem yourself in about an hour. 3 Reasons For Heater Blowing Cold Air In House. 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