Practical BTU ranges by room and project.
Start with the calculator, then use these guides to understand the common size classes for bedrooms, open areas, garages, and larger whole-home screens.
What Size Mini Split Do I Need?
A practical homeowner guide to mini-split BTU sizing, including the factors that move a room up or down one standard system size.
What Size Mini Split for 500 Sq Ft?
Most 500 sq ft rooms land near the 9k to 12k BTU class, but insulation, sun, ceiling height, and layout matter.
What Size Mini Split for 800 Sq Ft?
An 800 sq ft space usually points to the 15k to 18k class, with 12k possible only in unusually easy conditions.
What Size Mini Split for 1,000 Sq Ft?
A 1,000 sq ft area usually lands near 18k to 24k BTU, with layout and air distribution becoming as important as the number.
What Size Mini Split for 1,500 Sq Ft?
A 1,500 sq ft project often moves beyond a simple single-zone answer. Use the BTU range as a screen before getting a load calculation.
What Size Mini Split for a Garage?
Garage mini-split sizing depends heavily on insulation, door exposure, sun, and how you use the space.