Best 12,000 BTU mini-split
Fujitsu AOUH12KTAP1
12,000 BTU mini-split · AIRSTAGE H-Series · cold-climate certified
- SEER2
- 31.5
- HSPF2
- 13.7
- Heat at 5°F
- 16,200
The most efficient model in the most popular single-room size.
Full specs and running costUpdated October 12, 2026 · 4,086 certified models
Every ENERGY STAR heat pump and mini-split, ranked on its official ratings and explained in plain English. Search a model, or start with what you want to know.
Best 12,000 BTU mini-split
12,000 BTU mini-split · AIRSTAGE H-Series · cold-climate certified
The most efficient model in the most popular single-room size.
Full specs and running costBest for cold winters
12,000 BTU mini-split · AIRSTAGE H-Series · cold-climate certified
Highest efficiency at 5°F among 12,000 BTU cold-climate models (COP 2.62).
Full specs and running costBest 3-ton central heat pump
3 ton central · cold-climate certified
The most efficient ducted system in the most common whole-house size.
Full specs and running costAll best picks: by size, climate and room
Not sure? Sizing guides by square footage
Climate, energy prices and the models that cost least to run, for 272 U.S. cities.
The federal minimum for a split heat pump is 14.3 SEER2 and 7.5 HSPF2. More on each rating