Why it matters
The Senville LETO 9,000 BTU 115V is rated at 9,000 BTU of cooling. On the ENERGY STAR room sizing chart that suits about 350 to 400 sq ft of average room; the maker says up to 400 sq ft. It runs on 115V, so it needs a dedicated household circuit rather than a 240V line.
Its 21.5 SEER ranks 2 of 4 among the mini-splits within about 12% of its capacity that we cover; the most efficient is the Senville AURA 9,000 BTU 230V at 28. 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 25 dB at its quietest setting.
Installation needs the lines vacuumed and the valves opened after the line set is connected; most makers tie the warranty to a licensed installer. 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: 2 years (parts) / 5 year (compressor). Labor not included., Technical support included. Avail. Toll-free 5 days a week.
The listing gives dimensions of 9 inD x 37 inW x 12 inH, a shipping or unit weight of 25 pounds, a 782 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 350-400 sq ft
- Homes without a spare 240V circuit
- Lower running costs than most same-size systems
Look elsewhere if
- Primary heat in cold climates
- Spaces much larger than 400 sq ft
- Owners who want to avoid a licensed install
Pros and cons
Pros
- 21.5 SEER
- Heats down to 5°F
- 16ft. line set included
- Quiet indoor head (25 dB)
Cons
- Heating stops around 5°F
- 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 | 0.75 tons | Retailer |
|---|---|---|
| Cooling capacity (maker) | 9000 BTU | Retailer |
| Features (seller) | Alexa Enabled | Retailer |
| Dimensions (seller) | 9"D x 37"W x 12"H | Retailer |
| SEER (maker) | 21.5 | Retailer |
| Voltage | 110 V | Retailer |
| Noise (seller) | 25 db | Retailer |
| Refrigerant | R-454B | Retailer |
| Wattage | 782 W | Retailer |
| Product weight | 25 lb | Retailer |
| Control | App | Retailer |
| Model number | SENL-09CD-16 | Retailer |
| Warranty | 2 years (parts) / 5 year (compressor). Labor not included., Technical support included. Avail. Toll-free 5 days a week. | Retailer |
| Room size (maker) | 400 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
- Cooper & Hunter 6,000 BTU 115V Mini-Split
- DELLA Vario 12,000 BTU 115V
- Senville LETO 12,000 BTU 115V
- Cooper & Hunter MIA 12,000 BTU 115V
All ductless mini-splits, compared in one table · Every Senville product we cover
Final verdict
A sensible choice for a 350-400 sq ft room. Check that 9,000 BTU fits your room with the BTU calculator before you buy.
Where to buy
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