Best efficiency
Mini-splitENERGY STAR
MRCOOL DIY 4th Gen 12K
Cooling
12,000 BTU
Covers
500 ft²
Efficiency
22 SEER2
Noise
32 dB
$1099 est.
via partner retailers Mini-split
Fujitsu Halcyon 12LPAS1
by Fujitsu · Model ASUH12LPAS / AOUH12LPAS1
Fujitsu's entry-tier Halcyon delivers premium quietness and durability without flagship pricing.
Cooling
12,000 BTU
Covers
500 ft²
Efficiency
20 SEER2
Noise
19 dB
$1439 est.
typical street price · via Got Ductless Is 12,000 BTU right for your room? Run the sizing calculator
Strengths & trade-offs
Pros
- Very quiet 19 dB low setting
- Corrosion-resistant coated coils
- Strong 11.0 HSPF heating output
Cons
- WiFi module sold separately
- Stock can be spotty online
What the Fujitsu Halcyon 12LPAS1 costs to run
Estimated from this unit's 20 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 zone | Example regions | Est. cost / month |
|---|---|---|
| Cool North | Pacific NW, Upper Midwest, New England | $26 /mo |
| Mixed / Temperate | Mid-Atlantic, Midwest, Mountain | $28 /mo |
| Hot & Humid | Southeast, Gulf Coast, Texas | $23 /mo |
| Hot & Dry | Southwest, Desert | $25 /mo |
Full specifications
| Type | Mini-split air conditioner |
| Cooling capacity | 12,000 BTU |
| Rated coverage | 500 ft² |
| Efficiency | 20 SEER2 |
| Noise (low) | 19 dB |
| Smart features | None |
| ENERGY STAR | No |
| Model number | ASUH12LPAS / AOUH12LPAS1 |
| Typical street price | $1439 |
Specs from manufacturer data; price and ratings are snapshots and may vary. See how we evaluate.
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Cooling
12,000 BTU
Covers
550 ft²
Efficiency
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Noise
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Pioneer Diamante WYS012
Cooling
12,000 BTU
Covers
500 ft²
Efficiency
20 SEER
Noise
34 dB
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