# Free Furnace & Heat Pump BTU Sizing Calculator | Best Furnace Repair Toronto

> Estimate the heating capacity (BTU) your room needs before sizing a furnace zone, ductless heat pump, or supplemental heater in Toronto and the GTA.

URL: https://bestfurnacerepairtoronto.ca/tools/btu-calculator/

# Furnace & Heat Pump Sizing Calculator (BTU)

Estimate the heating capacity a room or addition needs, so you can size a furnace zone, a cold-climate heat pump, or a supplemental heater correctly before you call for a quote.

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### Furnace & Heat Pump Sizing Calculator (BTU)

Estimate the heating capacity a room or addition needs, so you can size a furnace zone, a cold-climate heat pump, or a supplemental heater correctly before you call for a quote.

Room Length (m)

Room Width (m)

Ceiling Height2.4m (Standard)2.7m3.0m3.5m+

Window / Sun ExposureShaded / North-facingPartial SunFull Sun / West-facing

Room TypeBedroomLiving Room / AdditionKitchenOffice / Basement Rec Room

Number of People Using the Room1 person2 people3-4 people5+ people

This calculator gives a room-level estimate based on standard conditions. Actual requirements depend on insulation, window count, ductwork, and the rest of the home. Book a full heat-loss assessment for an installed-system quote.

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