HVACRated.com

Updated October 16, 2026

Find the right heat pump or air conditioner

Every ENERGY STAR heat pump, mini-split and window air conditioner, plus every certified portable unit, ranked on official ratings and explained in plain English, with free calculators for size and running cost.

distinct heat pump models
2,746
window, wall and portable air conditioners
2,936
city climate guides
272
brands compared
277

Data from ENERGY STAR, the U.S. Department of Energy, the U.S. EIA and NOAA, refreshed every week.

Best picks right now

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

Highest cooling efficiency in the most popular single-room size, and the leader for cold winters too.

Full specs and running cost

Best 10,000 BTU window air conditioner

Midea MAH09B1AGR

9,500 BTU · saddle · heats too

CEER
17.6
Power draw
540 W
Per year
$73

The most efficient unit for a large bedroom or small living room, about 400-450 sq ft.

Specs, size and running cost

All best picks: by size, climate and room

Browse by size

Mini-split heat pumps 1,675 models

Central heat pumps 993 models

Packaged heat pumps 78 models

Window air conditioners 149 models

Portable air conditioners 2,772 model numbers

Not sure? Heat pump sizing by square footage · Window AC size calculator · Portable AC size calculator

Heat pumps in your city

Climate, energy prices and the models that cost least to run, for 272 U.S. cities.

All cities and states

Popular brands

All 256 brands

The ratings in one minute

The federal minimum for a split heat pump is 14.3 SEER2 and 7.5 HSPF2. More on each rating