Why it matters
The TOSOT 33,600 BTU 230V Mini-Split is rated at 33,600 BTU of cooling and 33,600 BTU of heating. On the ENERGY STAR room sizing chart that suits about 1,500 to 2,000 sq ft of average room; the maker says up to 2,100 sq ft. It needs a 230V (208/240V) circuit, which usually means an electrician if one isn't already at the spot.
Its 21 SEER2 ranks 1 of 6 among the mini-splits within about 12% of its capacity that we cover, the top of that group. 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 36 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 16ft 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 39.37 inD x 29.37 inW x 16.81 inH, a shipping or unit weight of 181.3 pounds, a 9,850 W power draw and indoor unit, outdoor unit and 16 ft. copper line set in the box.
Who it's for, and who should skip it
Good fit if
- Rooms of about 1,500-2,000 sq ft
- Large rooms and garages
- Lower running costs than most same-size systems
Look elsewhere if
- Primary heat in cold climates
- Spaces much larger than 2,000 sq ft
- Owners who want to avoid a licensed install
Pros and cons
Pros
- 21 SEER2
- 33,600 BTU heating stated
- 16ft Copper Line Set included
Cons
- Low-temperature heating not stated
- Needs a 230V circuit
- 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 | 3 tons | Retailer |
|---|---|---|
| Cooling capacity (maker) | 33600 BTU | Retailer |
| Features (seller) | Fast Cooling, WiFi Enabled | Retailer |
| Dimensions (seller) | 39.37"D x 29.37"W x 16.81"H | Retailer |
| SEER (maker) | 21 | Retailer |
| Voltage | 230 V | Retailer |
| Noise (seller) | 36 db | Retailer |
| Refrigerant | R-32 | Retailer |
| Wattage | 9850 | Retailer |
| Product weight | 181.3 lb | Retailer |
| Room size (maker) | 2100 sq ft | Retailer |
| Model number | GWH36ATEXH-D6DNA1G/O | Retailer |
| Warranty | 5-Year Warranty | Retailer |
| Control | Voice | Retailer |
| Heating capacity (maker) | 33,600 BTU | Retailer |
| SEER2 (maker) | 21 | Retailer |
| Line set included | 16ft Copper Line Set | Retailer |
Alternatives worth comparing
More ductless mini-splits we cover
- DELLA Optima 9,000 BTU 230V
- DELLA Optima 12,000 BTU 230V
- DELLA Optima 12,000 BTU 115V
- Senville AURA 9,000 BTU 230V
All ductless mini-splits, compared in one table · Every TOSOT product we cover
Final verdict
A straightforward choice for a 1,500-2,000 sq ft room. Check that 33,600 BTU fits your room with the BTU calculator before you buy.
Where to buy
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