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Find the right AC
in 60 seconds.

Answer a few questions about your room and we'll size it, estimate the running cost, and match you to the best-value units — no fluff, no sponsored rankings.

2.4M
rooms sized
45+
units tracked
Top-rated
local HVAC pros
BTU Calculator

Size your AC in 60 seconds

320 ft²20 × 16 ft room
You need about
6,5007,500 BTU
20 BTUper ft² is only the starting point — climate changes everything
40%of window ACs people buy are the wrong size for the room
$300+typical yearly saving from a right-sized, efficient unit
60 secaverage time to a recommendation with our calculator
Editor-tracked

Popular units right now

Spec-matched value picks across window, portable and mini-split. Prices via partner retailers.

See full comparison
product shot
Best efficiency
Mini-splitENERGY STAR

MRCOOL DIY 4th Gen 12K

4.6(1,510)
Cooling
12,000 BTU
Covers
500 ft²
Efficiency
22 SEER2
Noise
32 dB
$1099 est.
via partner retailers
product shot
Best portable
Portable

Midea Duo MAP12S1TBL

4.4(4,210)
Cooling
12,000 BTU
Covers
450 ft²
Efficiency
9 CEER
Noise
53 dB
$499 est.
via partner retailers

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For installs & repairs

Need a real human to install it?

Mini-splits and central systems need a licensed pro. Browse established, top-rated HVAC contractors across the 10 most AC-dependent states — ratings, specialties, and experience at a glance.

4.8★+
avg. Google rating of listed pros
~50 yrs
avg. time in business
Find a pro near you
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Local guides

AC sizing & costs, state by state

Climate, humidity, and electricity rates change the right answer — see what cooling really costs where you live.

All state guides