What size mini split do you need?
Pick your space — we’ll match the BTU. As a rule, a mini split needs about 20 BTU per square foot.
What are you cooling?
Fine-tune for ceilings, sun & kitchen
6,000 BTU mini split · Up to 250 sq ft
A 6,000 BTU mini split is a 0.5-ton system for small rooms up to about 250 sq ft — a bedroom, home office, nursery, or compact den. It's the most efficient choice when you only need to cool or heat one small space without oversizing.
9,000 BTU mini split · 250–400 sq ft
A 9,000 BTU (0.75-ton) mini split covers rooms up to roughly 400 sq ft, such as a master bedroom, hotel room, or small studio. It conditions a single medium room quietly while keeping energy use low.
12,000 BTU mini split · 400–550 sq ft
A 12,000 BTU (1-ton) mini split is sized for spaces up to about 550 sq ft — a studio apartment, large bedroom, or den. It's one of the most popular sizes for a single, well-insulated living area.
18,000 BTU mini split · 550–1,000 sq ft
An 18,000 BTU (1.5-ton) mini split handles open rooms up to roughly 1,000 sq ft, like an open-plan living room or a small apartment. Choose it when one larger area needs steady, whole-room comfort.
19,000 BTU mini split · 1,000–1,200 sq ft
A 19,000 BTU (1.58-ton) system covers roughly 1,000–1,200 sq ft. It's chosen for a large single room or as a compact two-zone multi-split running on one outdoor unit.
24,000 BTU mini split · 1,200–1,500 sq ft
A 24,000 BTU (2-ton) mini split is built for large spaces of about 1,200–1,500 sq ft — a big living room, finished garage, or basement. It delivers strong heating and cooling for open or hard-to-condition areas.
28,000 BTU mini split · 1,500–1,600 sq ft
A 28,000 BTU (2.33-ton) system suits about 1,500–1,600 sq ft and is a popular multi-zone condenser size for combining several rooms on one outdoor unit.
30,000 BTU mini split · 1,600–1,700 sq ft
A 30,000 BTU (2.5-ton) mini split suits great rooms and open floor plans up to around 1,700 sq ft. It's ideal when a single zone spans a large, connected living space.
36,000 BTU mini split · 1,700–1,800 sq ft
A 36,000 BTU (3-ton) mini split covers large open floors and small retail spaces up to about 1,800 sq ft. Use it for expansive rooms or light-commercial areas that need dependable output.
42,000 BTU mini split · 1,800–2,100 sq ft
A 42,000 BTU (3.5-ton) system handles roughly 1,800–2,100 sq ft and is typically used for multi-zone setups or light-commercial spaces.
48,000 BTU mini split · 2,100–2,400 sq ft
A 48,000 BTU (4-ton) mini split is a commercial-grade size for showrooms, gyms, and open commercial spaces up to roughly 2,400 sq ft. It provides heavy-duty comfort across a large footprint.
55,000 BTU mini split · 2,400–2,700 sq ft
A 55,000 BTU (4.58-ton) system is a large multi-zone / commercial size covering about 2,400–2,700 sq ft, feeding multiple indoor heads or a big open space.
60,000 BTU mini split · 2,700–3,000 sq ft
A 60,000 BTU (5-ton) mini split is the largest size, engineered for warehouses, open offices, and big commercial spaces up to about 3,000 sq ft. Choose it when maximum single-zone capacity is required.
See the full mini split size chart
| Room size | BTU | Ton | Typical use |
|---|---|---|---|
| Up to 250 sq ft | 6,000 | 0.5 | Small bedroom, office |
| 250–400 sq ft | 9,000 | 0.75 | Master bedroom, hotel room |
| 400–550 sq ft | 12,000 | 1 | Studio, large bedroom, den |
| 550–1,000 sq ft | 18,000 | 1.5 | Open living room, small apartment |
| 1,000–1,200 sq ft | 19,000 | 1.58 | Large room or 2-zone system |
| 1,200–1,500 sq ft | 24,000 | 2 | Large living space, garage |
| 1,500–1,600 sq ft | 28,000 | 2.33 | Large space or multi-zone |
| 1,600–1,700 sq ft | 30,000 | 2.5 | Great room, open floor plan |
| 1,700–1,800 sq ft | 36,000 | 3 | Large open floor, small retail |
| 1,800–2,100 sq ft | 42,000 | 3.5 | Multi-zone / light commercial |
| 2,100–2,400 sq ft | 48,000 | 4 | Showroom, gym, commercial |
| 2,400–2,700 sq ft | 55,000 | 4.58 | Large multi-zone / commercial |
| 2,700–3,000 sq ft | 60,000 | 5 | Warehouse, open office |
Based on the ~20 BTU/sq ft guideline (U.S. Dept. of Energy / ENERGY STAR). For odd layouts, an ACCA Manual J calculation is recommended.
