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I have installed two Ecobee4 units to replace my two current thermostats. Couple different things going on that hopefully someone can chime in on.
Information about HVAC system (House is a year old):
-(2) Lennox single stage heat pumps w/ electric heat
-Outdoor temps have been ranging from the teens to low 30's
-Both areas behind the thermostats have been sealed to the best of my ability with plumbers putty (there wasn't that large of a hole to begin with)
-Downstairs Ecobee is on living room wall
-Upstairs Ecobee is on hallway wall
-Default settings are pretty much being used on the thermostat (I did reduce the compressor min outdoor temp)
First thing that I am noticing is that when the thermostats call for heat, the logs indicate that the temperature continues to drop over the next 15 minutes. So I checked the air coming from the registers and noticed that when air starts flowing on a heating cycle it is in the low 60's. It takes a bit for the temps to get up in the upper 70's...but by that time the temperature at the thermostat has dropped another 1-2 degrees. Aux heat will kick in and run with the heat pump and then the house will regain temperature. This is happening on both the first and second floor...but is more apparent on the second floor. Is that normal of a heat pump? Or did I do something wrong with installation or in the settings?
The other item I am noticing in that the upstairs thermostat is always 1-2 degrees lower than the room sensor and a third party thermometer I have upstairs. I had the sensor and the thermometer placed in the hallway on a tripod in close proximity to the thermostat and there was still this variance. The thermostat has been replaced already because before I was getting a larger variance.
Thanks in advance.