Why it matters
The Mountman 24,000 BTU 230V Mini-Split 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 1,500 sq ft. It needs a 230V (208/240V) circuit, which usually means an electrician if one isn't already at the spot.
Its 19 SEER2 ranks 6 of 11 among the mini-splits within about 12% of its capacity that we cover; the most efficient is the Cooper & Hunter 24,000 BTU 230V Mini-Split at 23.5. The listing doesn't give a low-temperature heating limit, so treat it as a mild-climate heat pump until the maker confirms one. Indoor noise is listed at 26 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 listing gives dimensions of 12.28 inD x 42.83 inW x 15.31 inH.
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
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
- 19 SEER2
- Quiet indoor head (26 dB)
Cons
- Low-temperature heating not stated
- 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.
| Cooling capacity (maker) | 24000 BTU | Retailer |
|---|---|---|
| Features (seller) | Eco-Mode, Sleep Mode, Fan Mode, Auto-Swing, Dry Mode,Inverter Compressor,Silent Mode | Retailer |
| Dimensions (seller) | 12.28"D x 42.83"W x 15.31"H | Retailer |
| SEER (maker) | 19 | Retailer |
| Voltage | 230 V | Retailer |
| Noise (seller) | 26 db | Retailer |
| Room size (maker) | 1500 sq ft | Retailer |
| Control | Remote | Retailer |
| SEER2 (maker) | 19 | Retailer |
Alternatives worth comparing
More ductless mini-splits we cover
- Temprium 24,000 BTU 230V Mini-Split
- DELLA Serena 18,000 BTU 230V
- DELLA Vario 18,000 BTU 230V
- TOSOT 18,000 BTU 230V Mini-Split
All ductless mini-splits, compared in one table · Every Mountman product we cover
Final verdict
A sensible 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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