[Shop-talk] [Bulk] Re: Heat pump night setback

[Randall]

> At our new office I found out that the "emergency" heat came on when
> there
> was a more than 5 degree difference between setting and temperature.  

I was checking some thermostats on-line, and that appears to be the way most
older ones work.

Seems like it would be trivial to make a more intelligent decision (like
looking at the temperature rise over time and only cutting in the backup
heat if the heat pump can't raise the temperature inside the house), but I
didn't find any thermostats that worked that way.

-- Randall