Why it matters
The Senville LETO 24,000 BTU 230V is rated at 24,000 BTU of cooling. On the ENERGY STAR room sizing chart that suits about 1,400 to 1,500 sq ft of average room; the maker says up to 1,250 sq ft. It needs a 230V (208/240V) circuit, which usually means an electrician if one isn't already at the spot.
Its 18.7 SEER ranks 3 of 6 among the mini-splits within about 12% of its capacity that we cover; the most efficient is the MRCOOL DIY 24,000 BTU 230V at 20.5. The maker says heat-pump heating keeps working down to 5°F outside; below that you need another heat source. Indoor noise is listed at 34 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. line set. It uses R-454B refrigerant, one of the lower-impact A2L refrigerants new systems moved to in 2025. Warranty, per the listing: 1 years (parts) / 5 year (compressor). Labor not included., Technical support included. Avail. Toll-free 5 days a week.
The listing gives dimensions of 12.6 inD x 33.27 inW x 27.56 inH, a shipping or unit weight of 11.7 pounds, a 2,500 W power draw and 16 ft. copper line, communication cable, indoor air handler, outdoor condenser, remote control in the box.
Who it's for, and who should skip it
Good fit if
- Rooms of about 1,400-1,500 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 1,500 sq ft
- Owners who want to avoid a licensed install
Pros and cons
Pros
- 18.7 SEER
- Heats down to 5°F
- 16ft. line set included
Cons
- Heating stops around 5°F
- Heating capacity not stated on the listing
- 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 | 2 tons | Retailer |
|---|---|---|
| Cooling capacity (maker) | 24000 BTU | Retailer |
| Features (seller) | Inverter Compressor, heater | Retailer |
| Dimensions (seller) | 12.6"D x 33.27"W x 27.56"H | Retailer |
| SEER (maker) | 18.7 | Retailer |
| Voltage | 220 V | Retailer |
| Noise (seller) | 34 db | Retailer |
| Refrigerant | R-454B | Retailer |
| Wattage | 2500 W | Retailer |
| Product weight | 11.7 lb | Retailer |
| Control | App | Retailer |
| Model number | SENL-24CD-16 | Retailer |
| Warranty | 1 years (parts) / 5 year (compressor). Labor not included., Technical support included. Avail. Toll-free 5 days a week. | Retailer |
| Room size (maker) | 1250 sq ft | Retailer |
| Heats down to (maker) | 5°F | Retailer |
| Line set included | 16ft. line set | Retailer |
Alternatives worth comparing
More ductless mini-splits we cover
- Daikin Entra 12,000 BTU 230V
- DELLA Umbra 23,000 BTU 230V
- Cooper & Hunter MIA 24,000 BTU 230V
- DELLA Vario 24,000 BTU 230V
All ductless mini-splits, compared in one table · Every Senville product we cover
Final verdict
A straightforward choice for a 1,400-1,500 sq ft room. Check that 24,000 BTU fits your room with the BTU calculator before you buy.
Where to buy
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