Time To Replace Some Heat Pumps-Or At Least One

I pulled my builder special and replaced with a Rheem. The attic unit went from a 50 and 30 amp 240 feed for heat to a just a 40amp 240 feed. The heat pump outside was 20 and went to 30 amp, My cost savings bought me a mini-split to put in the garage and just used that now unused 30amp house feed with a breaker change to 20amp. I now heat and cool the house and garage for less than what it was costing just for the house. Technology changes!