The best replacement for hvac is electrician.

The best alternatives to hvac are rated as following:
★★★★★  electrician
★★★★★  heat pump
★★★★★  plumbing
★★  furnace
★★  hvdc
★★  welding
★★  electrical
★  boiler
★  carpentry
★  auto mechanic
★  diesel mechanic
★  geothermal
★  plumber
★  swamp cooler
★  pipefitter
★  trades
★  lennox hvac
  ductless
  acmv
  hvacr
  ptac
  goodman
  trane
  carrier hvac
  ahu

Your alternative for hvac is not listed? Suggest!
Speaking about hvac, one probably shouldn't forget about ductwork.

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



Google Trends

Scale is based on the average worldwide traffic of hvac in all years. Click on graph for more.
hvac
electrician
heat pump