I was gonna add that when I tried this for my 3 stage heat pump hvac in my vacant condo it kind of burned me so to speak. I had an automatic energy efficient t stat and if the temp was up more than a degree from current room temperature it would activate the electric heat. If it was 2 degrees or more it activated the emergency heat. I am guessing 110 vs 220? Low vs high? Anyway it cost me the same power vs leaving it set to a constant 72 degrees.
