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 ENERGY STAR
Bosch Climate 5000 12K
by Bosch · Model BMS500-AAS012-1CSXRA
Bosch's ultra-quiet Climate 5000 is a dependable mid-range pick backed by a 7-year warranty.
Cooling
12,000 BTU
Covers
600 ft²
Efficiency
22 SEER
Noise
20 dB
$1299 est.
typical street price · via Amazon Is 12,000 BTU right for your room? Run the sizing calculator
Strengths & trade-offs
Pros
- Silent setting drops to ~20 dBA
- Energy Star with 7-yr warranty
- Solid German-engineered components
Cons
- No WiFi or app control
- Line set sold separately on some listings
What the Bosch Climate 5000 12K costs to run
Estimated from this unit's 22 SEER 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 | $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 | 600 ft² |
| Efficiency | 22 SEER |
| Noise (low) | 20 dB |
| Smart features | None |
| ENERGY STAR | Yes |
| Model number | BMS500-AAS012-1CSXRA |
| Typical street price | $1299 |
Specs from manufacturer data; price and ratings are snapshots and may vary. See how we evaluate.
Similar units
Full comparison table Compare it against
Mini-splitENERGY STAR
Senville LETO SENL-12CD
Cooling
12,000 BTU
Covers
550 ft²
Efficiency
21.2 SEER2
Noise
28 dB
$799 est.
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Pioneer Diamante WYS012
Cooling
12,000 BTU
Covers
500 ft²
Efficiency
20 SEER
Noise
34 dB
$949 est.
via partner retailers