Best portable
Portable
Midea Duo MAP12S1TBL-A
Cooling
12,000 BTU
Covers
450 ft²
Efficiency
14.7 CEER
Noise
42 dB
$579 est.
typical retail pricePortable
Whynter Elite ARC-122DS
by Whynter · Model ARC-122DS
A slimmer Elite dual-hose Whynter for rooms around 400 sq ft that stays quiet while cooling quickly.
Cooling
12,000 BTU
Covers
400 ft²
Efficiency
5.8CEER
Noise
52 dB
$550 est.
typical street price · via AmazonIs 12,000 BTU right for your room? Run the sizing calculator
Strengths & trade-offs
Pros
- Compact dual-hose design
- Quiet sub-52 dB operation
- Full thermostatic control
Cons
- Modest 7,000 BTU SACC output
- Dated window-kit design
What the Whynter Elite ARC-122DS costs to run
Estimated from this unit's 5.8CEER 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 | $79 /mo |
| Mixed / Temperate | Mid-Atlantic, Midwest, Mountain | $84 /mo |
| Hot & Humid | Southeast, Gulf Coast, Texas | $70 /mo |
| Hot & Dry | Southwest, Desert | $74 /mo |
Full specifications
| Type | Portable air conditioner |
| Cooling capacity | 12,000 BTU |
| Rated coverage | 400 ft² |
| Efficiency | 5.8 CEER |
| Noise (low) | 52 dB |
| Smart features | None |
| ENERGY STAR | No |
| Model number | ARC-122DS |
| Typical street price | $550 |
Specs from manufacturer data; price and ratings are snapshots and may vary. See how we evaluate. Data last reviewed June 2026.
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Cooling
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Noise
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