Click to see full answer. Best Ecobee Settings For Heat Pump The Rheem Heat Pump should be in the cool mode when idle as well as in ac mode. Below that it might start dropping below body temp depending on system design. ecobee allow heat pump and aux heat to run simultaneously When we moved in I installed Ecobee3 thermostats to replace the cheap Ritetemp thermostats the POs had. The emergency heat setting has to be manually switched on and should only be used in temperatures below 30 degrees. Is Your Ecobee Auxiliary Heat Running Too Long? – Upgraded Home However, I don't understand why you have a heat pump as primary heat. How do you change ecobee from heat to cool? Then go to Installation Settings. Threshold settings for ecobee thermostats Thermostat Settings - Heat Pump Lockout Related articles How to identify a thermostat wire What do my thermostat labels mean? Heat Pump Set it to 0° or disable it. The compressor (Y) kicks on for heat or cool. I had a new Trane XR15 heat pump installed a few days ago. So anything over 35 and it won’t turn on the aux heat. Thermostat For Minutes Delayed 2 Nest