This morning neither the burners or the blower wou … This might sound crazy, but a heat pump can be working just fine even if the air feels cold. Color wires are weird due to swapping from conventional to heat pump. Clogged air filters could be causing cold air to blow out of your vents. My AC will not blow cool air. Two Reasons Your Heat Pump Is Blowing Cold Air. I have an ecobee 3 I just installed and is blowing hot air when set to AC. I have a York two stage AFUE 96% furnace, installed 9 years ago (model TM9T060-12). I have a heat pump and air handler. My old thermostat everything works just fine but ecobee blows cold air on cold or heat. Last night the it seemed to be running, but was blowing cold air. Press Menu on the main screen. 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. How to minimize the use of auxiliary heat with a heat-pump on your ecobee thermostat Question: We have a heat pump and recently installed the ecobee 3. However, it would not turn on the fan or generate any heat. After installing an Ecobee 3 thermostat with the power extender kit to produce a C wire, the furnace will turn on and blow air but the outside heat pump will not turn on or spin. I believe they were just replaced (we just - Answered by a verified HVAC Technician ... its only blowing air, not cold air. ... otherwise the thermostat will lock out the heatpump and change over to aux heat as the weather outside will be too cold to run the heatpump unit that's sitting outside. My furnace is a Trane XL80 and my heat pump is a Trane XE1000 Weatheron. Back on … The brand new Ecobee thermostat was somehow set to 81 degrees and climbing with no end in sight even though it was still set to 70 degrees. There are two possible routes here, one of which many homeowners who are new to heat pump systems encounter. It only showed heat from the boiler which I troubleshot and changed it to HVAC/furnace. We followed the troubleshooting in the manual and even reset the thermostat twice to original factory settings. Let us explain… The air could be warm but still feel cool. Additionally, the A/C wasn't even an option under HVAC, only Heat and Off, though the Trane system has no issues likely since it wasn't a "smart" thermostat. I immediately contacted Ecobee technical support and told them what was going on. Then select HVAC. I have a carrier 5 ton heat pump. 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. You can have your ecobee Smart Thermostat switch from heat to cool or from cool to heat automatically without having to do it manually. Go to System. Set the HVAC to Auto. 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