Why it matters
The Senville AURA 18,000 BTU is rated at 17,000 BTU of cooling. On the ENERGY STAR room sizing chart that suits about 550 to 700 sq ft of average room; the maker says up to 1,000 sq ft.
Its 21.5 SEER ranks 1 of 4 among the mini-splits within about 12% of its capacity that we cover, the top of that group. The maker says heat-pump heating keeps working down to -22°F outside, hyper-heat territory. Indoor noise is listed at 27 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 replacement & 7 years compressor warranty.
The listing gives dimensions of 10 inD x 40 inW x 113 inH, a shipping or unit weight of 78.3 pounds, a 1,360 W power draw and remote control, 16 ft. wiring harness, indoor air handler, 16 ft. copper line set, outdoor condenser in the box.
Who it's for, and who should skip it
Good fit if
- Rooms of about 550-700 sq ft
- Cold-climate heating
- Lower running costs than most same-size systems
Look elsewhere if
- Spaces much larger than 700 sq ft
- Owners who want to avoid a licensed install
Pros and cons
Pros
- 21.5 SEER
- Heats down to -22°F
- 16ft. line set included
- Quiet indoor head (27 dB)
Cons
- 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 | 1.5 tons | Retailer |
|---|---|---|
| Cooling capacity (maker) | 17000 BTU | Retailer |
| Features (seller) | Alexa Enabled | Retailer |
| Dimensions (seller) | 10"D x 40"W x 113"H | Retailer |
| SEER (maker) | 21.5 | Retailer |
| Noise (seller) | 27 db | Retailer |
| Refrigerant | R-454B | Retailer |
| Wattage | 1360 W | Retailer |
| Product weight | 78.3 lb | Retailer |
| Room size (maker) | 1000 sq ft | Retailer |
| Model number | SENA-18HF | Retailer |
| Warranty | 2 years parts replacement & 7 years compressor warranty. | Retailer |
| Control | App, Remote | Retailer |
| Heats down to (maker) | -22°F | Retailer |
| Line set included | 16ft. line set | Retailer |
Alternatives worth comparing
More ductless mini-splits we cover
- Senville AURA 24,000 BTU
- DELLA Optima 23,000 BTU 230V
- Senville AURA 33,000 BTU 230V
- Cooper & Hunter 24,000 BTU 230V Mini-Split
All ductless mini-splits, compared in one table · Every Senville product we cover
Final verdict
A strong pick where winters reach -22°F. Check that 17,000 BTU fits your room with the BTU calculator before you buy.
Where to buy
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