Heat pump type
Air-Source Heat Pumps
Learn how air-source heat pumps work, compare certified models, and understand sizing, efficiency, climate performance, and installation considerations.
How air-source heat pumps fit a home
Air-source heat pumps move heat between your home and the outdoor air. They provide both heating and cooling and include central ducted systems as well as ductless configurations. The right equipment depends on a room-by-room load calculation, local design temperatures, ductwork, and the model's low-temperature performance.
Good fit for
- Homes replacing or supplementing a furnace and air conditioner
- Owners who want one system for both heating and cooling
- Projects where ground-loop installation is not practical
What to compare
Check 1
Compare capacity at your local winter design temperature—not nominal tonnage alone.
Check 2
Ask whether existing ducts are correctly sized and sealed.
Check 3
Review HSPF2, SEER2, COP, and cold-climate performance together.
Catalog