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
Senville LETO SENL-12CD
by Senville · Model SENL-12CD
The value mini-split — 21+ SEER2, a near-silent indoor unit, Alexa-enabled, and one of the cheapest from a brand with real warranty support.
Cooling
12,000 BTU
Covers
550 ft²
Efficiency
21.2 SEER2
Noise
28 dB
$799 est.
typical street price · via Amazon Is 12,000 BTU right for your room? Run the sizing calculator
Strengths & trade-offs
Pros
- Excellent value
- 21.2 SEER2 + heat pump
- Near-silent (28 dB)
Cons
- Pro install recommended
- 115V model suits smaller zones
What the Senville LETO SENL-12CD costs to run
Estimated from this unit's 21.2 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 | $25 /mo |
| Mixed / Temperate | Mid-Atlantic, Midwest, Mountain | $26 /mo |
| Hot & Humid | Southeast, Gulf Coast, Texas | $22 /mo |
| Hot & Dry | Southwest, Desert | $23 /mo |
Full specifications
| Type | Mini-split air conditioner |
| Cooling capacity | 12,000 BTU |
| Rated coverage | 550 ft² |
| Efficiency | 21.2 SEER2 |
| Noise (low) | 28 dB |
| Smart features | App, Voice |
| ENERGY STAR | Yes |
| Model number | SENL-12CD |
| Typical street price | $799 |
Specs from manufacturer data; price and ratings are snapshots and may vary. See how we evaluate.
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Covers
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Efficiency
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Noise
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Cooling
12,000 BTU
Covers
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Efficiency
25.6 SEER2
Noise
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