Description
MRCOOL Mini Split BTU Guide
Drawn to scale — 1 square = 2 × 2 ft
36K BTU
24K BTU
18K BTU
12K BTU
9K BTU
6K BTU
6K BTU
up to 250 sq ft · Small bedroom, office
9K BTU
up to 375 sq ft · Bedroom, home office
12K BTU
up to 500 sq ft · Large bedroom, den
18K BTU
up to 750 sq ft · Living room, master suite
24K BTU
up to 1000 sq ft · Open living area
36K BTU
up to 1500 sq ft · Great room, small home
Between sizes? Round up. A slightly larger unit runs efficiently at partial load — an undersized one runs constantly.













