Why it matters
The TOSOT 12,000 BTU 115V Mini-Split is rated at 12,000 BTU of cooling. On the ENERGY STAR room sizing chart that suits about 450 to 550 sq ft of average room; the maker says up to 1,500 sq ft. It runs on 115V, so it needs a dedicated household circuit rather than a 240V line.
Its 20 SEER2 ranks 10 of 26 among the mini-splits within about 12% of its capacity that we cover; the most efficient is the DELLA Optima 12,000 BTU 230V at 24. The listing doesn't give a low-temperature heating limit, so treat it as a mild-climate heat pump until the maker confirms one. Indoor noise is listed at 24 dB at its quietest setting.
Expect a professional install: the copper lines are connected, pressure-checked and vacuumed before the refrigerant is released. The kit includes a 16 ft. copper line set. It uses R-32 refrigerant, one of the lower-impact A2L refrigerants new systems moved to in 2025. Warranty, per the listing: 5-year warranty.
The listing gives dimensions of 14.7 inD x 23.2 inW x 31.1 inH, a 1,450 W power draw and indoor air handler, outdoor condenser in the box.
Who it's for, and who should skip it
Good fit if
- Rooms of about 450-550 sq ft
- Homes without a spare 240V circuit
Look elsewhere if
- Primary heat in cold climates
- Spaces much larger than 550 sq ft
- Owners who want to avoid a licensed install
Pros and cons
Pros
- 20 SEER2
- 16 ft. copper line set included
- Quiet indoor head (24 dB)
Cons
- Low-temperature heating not stated
- Heating capacity not stated on the listing
- Professional install recommended
Limitations to weigh
- Capacity and efficiency are the maker's ratings; real output depends on the install, the line length and the weather.
- Heat pumps lose heating capacity as it gets colder; size for your climate with the BTU calculator.
- The federal 25C tax credit ended for systems installed after 2025; check your utility for current rebates.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Capacity | 1 tons | Retailer |
|---|---|---|
| Cooling capacity (maker) | 12000 BTU | Retailer |
| Features (seller) | Google Assistant,Wifi | Retailer |
| Dimensions (seller) | 14.7"D x 23.2"W x 31.1"H | Retailer |
| SEER (maker) | 19 | Retailer |
| Voltage | 115 V | Retailer |
| Noise (seller) | 24 db | Retailer |
| Refrigerant | R-32 | Retailer |
| Wattage | 1450 W | Retailer |
| Room size (maker) | 1500 sq ft | Retailer |
| Model number | 12,000 BTU Mini-Split Air Conditioner | Retailer |
| Warranty | 5-year warranty | Retailer |
| Control | Voice | Retailer |
| SEER2 (maker) | 20 | Retailer |
| Line set included | 16 ft. copper line set | Retailer |
Alternatives worth comparing
More ductless mini-splits we cover
- Senville LETO 9,000 BTU 115V
- Cooper & Hunter 6,000 BTU 115V Mini-Split
- DELLA Vario 12,000 BTU 115V
- Senville LETO 12,000 BTU 115V
All ductless mini-splits, compared in one table · Every TOSOT product we cover
Final verdict
A straightforward choice for a 450-550 sq ft room. Check that 12,000 BTU fits your room with the BTU calculator before you buy.
Where to buy
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