|
I'm not sure if it still applies, but a few years back it was more cost effective and efficient to have multiple smaller mini split systems than a central heat pump. The ones I installed in Vermont would operate to nearly -30, and I had a pellet stove (a pain in the ass) for the nights when it got colder than -15 or so. The heat pumps did 95% of heating through winter and cut my bills in half. They would even function on most of the coldest nights but approached the efficiency of an electric resistive heater, so I kept a very basic system to heat the house on those nights.
Edit: however I later moved somewhere a good sized chunk of households have neither heat nor cooling. The ultimate bill reduction. No furnace to feed or fix.
|