The best replacement for heat pumps is air conditioners.

The best alternatives to heat pumps are rated as following:
★★★★★  air conditioners
★★  furnaces
★  geothermal
★  central air conditioners
★  gas heaters
★  air conditioning
  refrigerators
  heaters
  trane heat pumps
  gas packs
  natural gas heaters
  gas furnaces

Your alternative for heat pumps is not listed? Suggest!
Speaking about heat pumps, one probably shouldn't forget about radiators.

Other search terms related to heat pumps and their ratings are:
★★★★★ radiators
emergency heat
You have in mind a companion for heat pumps and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of heat pumps in all years. Click on graph for more.
heat pumps
air conditioners
furnaces