Energy · 70 cities · checked September 28, 2026
Blower door testing across Canada
A calibrated fan depressurizes the house to measure air leakage and show where the leaks are.
Typical cost: Included in an EnerGuide evaluation
Choose your city
Each city page covers local prices and rules, the climate and housing stock that shape the job, and who does the work there. The bar under each city shows its houses by construction era, oldest first.
What the figure under each city means: The number is heating degree-days: the higher it is, the longer and colder the heating season, and the more each air leak costs.
British Columbia
- Vancouver 2,768 degree-days
- Surrey 2,851 degree-days
- Burnaby 2,768 degree-days
- Richmond 2,768 degree-days
- Abbotsford 2,760 degree-days
- Coquitlam 2,851 degree-days
- Kelowna 3,715 degree-days
- Langley 2,851 degree-days
- Saanich 2,674 degree-days
- Delta 2,768 degree-days
- Nanaimo 2,939 degree-days
- Kamloops 3,365 degree-days
- Victoria 2,763 degree-days
Ontario
- Toronto 3,559 degree-days
- Ottawa 4,354 degree-days
- Mississauga 3,664 degree-days
- Brampton 3,664 degree-days
- Hamilton 3,449 degree-days
- London 3,809 degree-days
- Markham 3,863 degree-days
- Vaughan 3,863 degree-days
- Kitchener 4,331 degree-days
- Windsor 3,306 degree-days
- Oakville 3,449 degree-days
- Richmond Hill 3,863 degree-days
- Burlington 3,449 degree-days
- Oshawa 3,863 degree-days
- Greater Sudbury 5,049 degree-days
- Barrie 4,242 degree-days
- Guelph 4,331 degree-days
- Whitby 3,863 degree-days
- Cambridge 3,664 degree-days
- St. Catharines 3,347 degree-days
- Milton 3,664 degree-days
- Kingston 3,935 degree-days
- Ajax 3,863 degree-days
- Waterloo 4,331 degree-days
- Thunder Bay 5,405 degree-days
- Brantford 3,809 degree-days
- Chatham-Kent 3,419 degree-days
- Clarington 3,931 degree-days
- Pickering 3,863 degree-days
- Peterborough 4,268 degree-days
Quebec
- Montréal 4,028 degree-days
- Québec City 4,754 degree-days
- Laval 4,167 degree-days
- Gatineau 4,354 degree-days
- Longueuil 4,275 degree-days
- Sherbrooke 4,517 degree-days
- Lévis 4,754 degree-days
- Saguenay 5,343 degree-days
- Trois-Rivières 4,560 degree-days
- Terrebonne 4,531 degree-days
- Saint-Jean-sur-Richelieu 4,275 degree-days
before 1961 1961–1990 1991–2000 2001 or later · Statistics Canada, 2021 Census
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