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Every AC we track — 49 units, verified specs

Real, currently-sold US models across window, portable, mini-split, and through-wall. Specs come from manufacturer data and independent testing; efficiency is shown with its true metric (CEER, EER, SEER, or SEER2) so you can compare honestly. Not sure where to start? Size your room first or jump to the sortable comparison table.

Window (18)Portable (12)Mini-split (13)Through-wall (6)
18 units

Window air conditioners

The default for most rooms — efficient, affordable, and DIY-installable.

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product shot
Best design
WindowENERGY STAR

Windmill AC

4.4(1,920)
Cooling
8,300 BTU
Covers
350 ft²
Efficiency
15 CEER
Noise
50 dB
$415 est.
via partner retailers
product shot
Window

LG LW6017R

4.5(4,900)
Cooling
6,000 BTU
Covers
260 ft²
Efficiency
11.3 CEER
Noise
52 dB
$249 est.
via partner retailers
product shot
WindowENERGY STAR

Amana AMAP061CW

4.3(450)
Cooling
6,000 BTU
Covers
250 ft²
Efficiency
12.1 CEER
Noise
53 dB
$229 est.
via partner retailers
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WindowENERGY STAR

Keystone KSTAW12CE

4.3(1,800)
Cooling
12,000 BTU
Covers
550 ft²
Efficiency
12 CEER
Noise
58 dB
$360 est.
via partner retailers
12 units

Portable air conditioners

No window mount needed. Best when installs are off-limits or you move it room to room.

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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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Portable

Whynter ARC-1230WN

4.3(880)
Cooling
14,000 BTU
Covers
600 ft²
Efficiency
12.3 CEER
Noise
58 dB
$629 est.
via partner retailers
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Portable

SereneLife SLPAC10

4.2(10,000)
Cooling
10,000 BTU
Covers
450 ft²
Efficiency
8.7 EER
Noise
52 dB
$300 est.
via partner retailers
13 units

Mini-split air conditioners

The efficiency leaders. Quietest, cheapest to run — pro or DIY install.

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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
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Premium pick
Mini-splitENERGY STAR

Mitsubishi MZ-GS12NA

4.8(60)
Cooling
12,000 BTU
Covers
550 ft²
Efficiency
25.6 SEER2
Noise
19 dB
$1972 est.
via partner retailers
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Mini-split

GREE Livo Gen4 12K

4.2(170)
Cooling
12,000 BTU
Covers
600 ft²
Efficiency
17.5 SEER2
Noise
27 dB
$1049 est.
via partner retailers
product shot
Mini-splitENERGY STAR

LG Art Cool LA120HSV5

4.5(45)
Cooling
12,000 BTU
Covers
550 ft²
Efficiency
22 SEER2
Noise
19 dB
$2099 est.
via partner retailers
product shot
Mini-splitENERGY STAR

Senville AURA 12K

4.4(1,200)
Cooling
12,000 BTU
Covers
600 ft²
Efficiency
25.4 SEER2
Noise
24 dB
$1149 est.
via partner retailers
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Mini-split

Klimaire KSIV 12K

4.4(450)
Cooling
12,000 BTU
Covers
550 ft²
Efficiency
20.8 SEER2
Noise
28 dB
$849 est.
via partner retailers
6 units

Through-wall air conditioners

Permanent sleeve installs that free up your windows.

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product shot
Through-wallENERGY STAR

Frigidaire WallFit 12K

4.3(250)
Cooling
12,000 BTU
Covers
550 ft²
Efficiency
10.5 CEER
Noise
59 dB
$570 est.
via partner retailers

Prices are typical street prices and may vary. “Check Price” links go to retailer listings. See how we evaluate.