Why it matters
The Senville Leto 18,000 BTU 230V is rated at 18,000 BTU of cooling and 19,400 BTU of heating. On the ENERGY STAR room sizing chart that suits about 700 to 1,000 sq ft of average room; the maker says up to 1,000 sq ft.
Its 19.2 SEER2 ranks 16 of 26 among the mini-splits within about 12% of its capacity that we cover; the most efficient is the Senville Elite 18,000 BTU 230V at 25.6. The maker says heat-pump heating keeps working down to 5°F outside; below that you need another heat source.
Installation needs the lines vacuumed and the valves opened after the line set is connected; most makers tie the warranty to a licensed installer. It uses R-454B refrigerant, one of the lower-impact A2L refrigerants new systems moved to in 2025. Warranty, per the listing: 5-Year Limited Warranty.
Who it's for, and who should skip it
Good fit if
- Rooms of about 700-1,000 sq ft
- Large rooms and garages
Look elsewhere if
- Primary heat in cold climates
- Spaces much larger than 1,000 sq ft
- Owners who want to avoid a licensed install
Pros and cons
Pros
- 19.2 SEER2
- 19,400 BTU heating stated
- Heats down to 5°F
Cons
- Heating stops around 5°F
- 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.
| Price | $1,039 | Retailer |
|---|---|---|
| Model number | SENL-18CD-16 | Retailer |
| Voltage | 230V | Retailer |
| Cooling capacity (maker) | 18000 BTU | Retailer |
| Heating capacity (maker) | 19400 BTU | Retailer |
| SEER2 (maker) | 19.2 | Retailer |
| EER2 (maker) | 10.8 | Retailer |
| Heats down to (maker) | 5°F | Retailer |
| Room size (maker) | 1000 sq ft | Retailer |
| Refrigerant | R-454B | Retailer |
| Zones | 1 | Retailer |
| Compressor | Inverter | Retailer |
| Certifications | 16 ft.: UL | Retailer |
| Max line length (maker) | 98.5 ft | Retailer |
| Airflow | 388.0 cfm | Retailer |
| Warranty | 5-Year Limited Warranty | Retailer |
Alternatives worth comparing
More ductless mini-splits we cover
- DELLA Serena 18,000 BTU 230V
- DELLA Vario 18,000 BTU 230V
- TOSOT 18,000 BTU 230V Mini-Split
- DELLA Econo 23,000 BTU 230V
All ductless mini-splits, compared in one table · Every Senville product we cover
Final verdict
A sensible choice for a 700-1,000 sq ft room. Check that 18,000 BTU fits your room with the BTU calculator before you buy.
Where to buy
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