The temperature differential with altitude is more than I would have expected. I have been out a few times today driving down to near 0 ASL, and driving back up to my house the drop has been >= 6 degrees.

Right now at 217 and 26 it is 102F, and here outside at my house it is 96F

The 96F degree temps have not really been that taxing for my climate control, as the inside temp is a steady 71 degrees, and the main floor heat pump has only gone to stage 5 a few times. Air temp coming out of the vents has been pretty stable at 51-53F degrees.

My house has a lot of heat load from both the color as well as the number of windows, so this is an interesting test of the total system capacity.

The server room AC hasn’t changed its pattern that much. It is running at around 600watts most of the time, and that room temp is usually right around 68-70 degrees, with 5-6kW of equipment running. It is interesting that I’m only using 600 watts of cooling, but heat pumps have greater than 1:1 CoP, and that room is buried and surrounded by concrete and then earth.