Why it matters
The Rellytech 17,000 BTU 230V Mini-Split 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. It needs a 230V (208/240V) circuit, which usually means an electrician if one isn't already at the spot.
Its 17 SEER2 ranks 16 of 16 among the mini-splits within about 12% of its capacity that we cover; the most efficient is the DELLA Optima 18,000 BTU 230V at 23. The maker says heat-pump heating keeps working down to -4°F outside; below that you need another heat source. Indoor noise is listed at 32 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 42ft copper line set. Warranty, per the listing: 21 Year Manufacturer.
The listing gives dimensions of 12.2 inD x 31.9 inW x 9.5 inH, a shipping or unit weight of 78.1 pounds and a 1,770 W power draw.
Who it's for, and who should skip it
Good fit if
- Rooms of about 550-700 sq ft
- Large rooms and garages
Look elsewhere if
- Spaces much larger than 700 sq ft
- Owners who want to avoid a licensed install
Pros and cons
Pros
- 17 SEER2
- Heats down to -4°F
- 42ft copper line set included
Cons
- 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 | 6800 cubic feet | Retailer |
|---|---|---|
| Cooling capacity (maker) | 17000 BTU | Retailer |
| Features (seller) | Auto Clean, Fast Cooling, Heating & Cooling Function, Silent Mode, Sleep Mode | Retailer |
| Dimensions (seller) | 12.2"D x 31.9"W x 9.5"H | Retailer |
| SEER (maker) | 17 | Retailer |
| Voltage | 230 V | Retailer |
| Noise (seller) | 32 db | Retailer |
| Wattage | 1770 W | Retailer |
| Room size (maker) | 1000 sq ft | Retailer |
| Model number | ESW-001 | Retailer |
| Warranty | 21 Year Manufacturer | Retailer |
| Product weight | 78.1 lb | Retailer |
| Control | Remote | Retailer |
| SEER2 (maker) | 17 | Retailer |
| Heats down to (maker) | -4°F | Retailer |
| Line set included | 42ft copper line set | Retailer |
Alternatives worth comparing
More ductless mini-splits we cover
- DELLA Serena 9,000 BTU 230V
- ActiveTrail 17,000 BTU 230V Mini-Split
- Albott 18,000 BTU 230V Mini-Split
- Mountman 18,000 BTU 230V Mini-Split
All ductless mini-splits, compared in one table · Every Rellytech product we cover
Final verdict
A sensible choice for a 550-700 sq ft room. Check that 17,000 BTU fits your room with the BTU calculator before you buy.
Where to buy
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