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📐 Size Calculator
Find the right cooling capacity for your Canadian home using a Manual J-style
calculation. Enter your square footage, insulation, and climate zone.
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A certified HVAC contractor performs a Manual J load calculation for exact sizing.
Get Free Quotes| Home Size | Recommended Capacity |
|---|---|
| Up to 800 sq ft | 1.5 tons (18,000 BTU/h) |
| 800 – 1,200 sq ft | 1.5 |
| 1,200 – 1,800 sq ft | 2 |
| 1,800 – 2,500 sq ft | 2 – 2.5 tons |
| 2,500 – 3,500 sq ft | 3 – 4 tons |
| 3,500+ sq ft | 4 – 5 tons |
⚠️ Important
Canada has significant climate variation. Homes in Windsor, ON experience more intense summer heat than homes in Edmonton or Halifax. Our calculator uses your region to apply the appropriate climate zone factor.
A well-insulated, air-sealed home retains cool air far more efficiently than an older, drafty home. Good insulation may allow a smaller unit than square footage alone suggests.
Homes with 9, 10, or vaulted ceilings have larger air volumes to cool, increasing required capacity compared to standard 8-foot ceilings.
A standard central AC installation typically takes 4–8 hours. Ductless mini-split installations are often faster — 3–5 hours for a single zone.
Connect with trusted local HVAC contractors in your area. Get 3 free quotes — no obligation.
Canadian homeowners may qualify for up to $5,000 in federal and provincial rebates on qualifying systems.
