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Mini-split Best efficiency ENERGY STAR

MRCOOL DIY 4th Gen 12K

4.6(1,510) by MRCOOL · Model DIY-12-HP-WM-115C25
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America's DIY mini-split — pre-charged quick-connect lines mean no vacuum pump and no HVAC tech. Heats and cools at 22 SEER2.

Cooling
12,000 BTU
Covers
500 ft²
Efficiency
22 SEER2
Noise
32 dB
$1099 est.
typical street price · via Amazon
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Is 12,000 BTU right for your room? Run the sizing calculator

Strengths & trade-offs

Pros
  • True DIY install (no pro)
  • 22 SEER2 — lowest running cost
  • WiFi + heats year-round
Cons
  • Needs an exterior wall + drilling
  • Higher up-front cost

What the MRCOOL DIY 4th Gen 12K costs to run

Estimated from this unit's 22 SEER2 rating at 8 hours/day of cooling, using average residential electricity rates for each US climate zone. Your usage and utility rate will shift these numbers — run the calculator for your exact room.

Climate zoneExample regionsEst. cost / month
Cool North Pacific NW, Upper Midwest, New England $24 /mo
Mixed / Temperate Mid-Atlantic, Midwest, Mountain $25 /mo
Hot & Humid Southeast, Gulf Coast, Texas $21 /mo
Hot & Dry Southwest, Desert $22 /mo

Full specifications

Type Mini-split air conditioner
Cooling capacity 12,000 BTU
Rated coverage 500 ft²
Efficiency 22 SEER2
Noise (low) 32 dB
Smart features App, Voice, Scheduling
ENERGY STAR Yes
Model number DIY-12-HP-WM-115C25
Typical street price $1099

Specs from manufacturer data; price and ratings are snapshots and may vary. See how we evaluate.

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Compare it against

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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