Room Size Guide
Find the perfect mini split size for your room dimensions. Match your square footage to the right BTU capacity for optimal Texas cooling.
Room size is the starting point for mini split sizing. Your square footage determines the base BTU capacity needed, then we adjust for Texas climate, ceiling height, windows, and insulation.
Each room size category below includes recommended BTU options, Texas-specific considerations, and real-world examples. Click on any room size to learn more about sizing your space.
100-500 sq ft
100-500 sq ftRooms between 100 and 500 square feet are perfect for compact mini split systems. These spaces typically require 9,000 t...
- Small bedroom
- Home office
- Studio apartment
500-750 sq ft
500-750 sq ftRooms between 500 and 750 square feet are common applications for mini splits. These spaces typically work best with 12,...
- Master bedroom
- Large den
- Living room
750-1,000 sq ft
750-1,000 sq ftRooms between 750 and 1,000 square feet require substantial cooling capacity. These spaces typically need 18,000 to 24,0...
- Large living room
- Great room
- Open concept area
1,000-1,250 sq ft
1,000-1,250 sq ftRooms between 1,000 and 1,250 square feet demand high-capacity mini split systems. These spaces typically require 24,000...
- Very large living area
- Open concept area
- Large commercial space
1,250-1,500 sq ft
1,250-1,500 sq ftRooms between 1,250 and 1,500 square feet require commercial-grade mini split systems. These applications typically need...
- Extra large living area
- Open concept entire floor
- Large commercial space
Understanding Room Size Sizing
Room size is your starting point, but several factors affect the final BTU requirement:
- Square footage: Base calculation starting point
- Ceiling height: Add 10% per 2 feet over 8 feet
- Windows: Large or south-facing windows add heat load
- Insulation: Poor insulation adds 15-20% to capacity needs
- Texas location: Houston humidity, Dallas heat, Austin variability all matter
Always measure your room accurately and consider all factors before selecting your mini split size.