Calculate the perfect furnace capacity for your home based on square footage, climate, and insulation factors.
Determine the optimal heating capacity needed for your space by calculating BTU requirements. Consider home size, insulation quality, climate factors, and building characteristics for efficient and comfortable heating.
Click on any example to load it into the calculator.
Compact home with good insulation and moderate climate for efficient heating requirements.
Area: 1200 sq ft
Climate: Moderate
Insulation: Good
Ceiling Height: 8 ft
Windows: 6
Doors: 2
Occupants: 2
Average-sized family home with standard insulation and cold climate heating needs.
Area: 2500 sq ft
Climate: Cold
Insulation: Fair
Ceiling Height: 9 ft
Windows: 12
Doors: 4
Occupants: 4
Spacious home with excellent insulation and very cold climate requirements.
Area: 4000 sq ft
Climate: Very Cold
Insulation: Excellent
Ceiling Height: 10 ft
Windows: 20
Doors: 6
Occupants: 6
Historic home with poor insulation requiring higher heating capacity for comfort.
Area: 1800 sq ft
Climate: Cold
Insulation: Poor
Ceiling Height: 8 ft
Windows: 8
Doors: 3
Occupants: 3