Furnace Size & BTU Calculator
Not sure what size furnace you need? Answer a few questions about your home and we'll calculate the right BTU output for your situation.
Select your home type
Approximate home square footage of finished living space
What year was your home built?
How well-insulated is your home?
Does your home have lots of large windows, patio doors, skylights, or a sunroom?
Which part of Canada/North America do you live in?
Would you like a free no-obligation estimate from our local contractor partners?
Great! Almost done, your result is on the next page.
Please enter your contact details so our Certified contractors can provide estimates as well.
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📐 BTU Calculation Complete
Your Recommended Furnace Size
Recommended Furnace Output
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BTUs per hour
What This Means
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Certified HVAC contractors in your area will confirm the right size and provide accurate pricing.
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