Calculators

Enter your coldest typical winter temperature to see which mini-splits and heat pumps their makers say keep heating at it, which stop above it, and which don't say.

Enter room size, ceiling height, climate, insulation and sun to get the cooling and heating BTU a room needs, and the mini-splits and heat pumps whose stated capacity fits.

Pick a mini-split or heat pump and enter your hours of use and electricity price to see its yearly cooling and heating cost, compared with electric resistance heat.