British Columbia · Energy · checked September 28, 2026

Blower door testing in Saanich

A blower door test measures how leaky a house is and shows where the leaks are. In Saanich, with about 2,674 heating degree-days a year, every leak runs up the heating bill for most of the year.

A red blower-door panel with a large fan fitted into the front doorway of a brick bungalow, a pressure gauge on a stool inside

Cost

Included in an evaluation

Evaluation price

About $400–$500

Licensed organizations

22

Houses built before 1961

28%

How Saanich is built

Saanich's houses by when they were built Ten house shapes, one for each tenth of Saanich's 37,620 houses. Before 1961: 28%, 1961–1990: 50%, 1991–2000: 11%, 2001 or later: 11%. Older houses glow hotter.
  • Before 1961 28%
  • 1961–1990 50%
  • 1991–2000 11%
  • 2001 or later 11%
Each house stands for one in ten of Saanich's 37,620 houses (single-detached, semi-detached, row and duplex), drawn by when it was built. The glow shows the usual pattern: older houses tend to be leakier and less insulated. Snowfall scales with heating degree-days. Sources: Statistics Canada 2021 Census (table 98-10-0233-01), NRCan HOT2000 climate data.

Why air leakage matters in Saanich

Saanich gets about 2,674 heating degree-days a year and has a winter design temperature of −1.1°C, according to NRCan's HOT2000 climate data for Victoria University. That's the lowest heating demand of the 70 cities we cover.

Of Saanich's 37,620 houses (single-detached, semi-detached, row houses and duplexes), 28% were built before 1961 and 78% before 1991, according to the 2021 Census. Older houses usually test leakier than newer ones, and an EnerGuide report compares your result with homes of the same era, so you can see whether your house is typical or a problem.

After you seal: two checks

  • Combustion safety. In the Victoria area, the main heating energy is natural gas for 23% of households. A tighter house changes how fuel-burning appliances vent, so the spillage check should be repeated after serious air sealing. Combustion safety testing in Saanich
  • Radon. Sealing shifts the pressure balance between the house and the soil. Health Canada's 2012 survey found 1.8% of 55 homes tested in the South Vancouver Island Health Service Delivery Area health region above the guideline. The larger 2024 Cross-Canada survey reports 0.5% (1 in 200) of houses at or above the guideline for the Victoria, BC (Victoria CMA) metro area. Test before and after big air-sealing jobs. Radon testing in Saanich

What it costs in Saanich

A blower door test is part of every EnerGuide evaluation rather than a separate purchase. There's no provincial price list; the City of Nanaimo quotes $400–$500 as typical for an existing home. Several B.C. municipalities subsidize evaluations for their residents (see local programs below).

How the test works

  • A calibrated fan is fitted into an exterior door and pulls air out until the house is at 50 pascals, the standard test pressure.
  • The result is air changes per hour at 50 Pa (ACH50): how many times an hour the whole volume of air would leak out and be replaced at that pressure.
  • While the fan runs, you and the advisor walk the house and feel for leaks at the attic hatch, rim joists, pot lights, trim and plumbing and wiring penetrations.
  • A second test after the work shows what changed, and it is what most rebates pay on.

The blower door test in detail.

NRCan-licensed service organizations serving Saanich

A blower door test is part of every EnerGuide evaluation, so any organization below can do one in Saanich. Ask to walk the house with the advisor while the fan runs.

Source: NRCan list of licensed service organizations, checked September 28, 2026. Call to confirm your street is covered and ask about wait times.

Programs that include a blower door test in Saanich

Blower door test in Saanich: common questions

Where can I get a blower door test in Saanich?

Book an EnerGuide evaluation with any of the 22 NRCan-licensed organizations serving Saanich; the blower door test is part of every evaluation.

How much does a blower door test cost in Saanich?

It is included in an EnerGuide evaluation. There's no provincial price list; the City of Nanaimo quotes $400–$500 as typical for an existing home. Several B.C. municipalities subsidize evaluations for their residents (see local programs below).

What is a good blower door result?

Lower is better. Your EnerGuide report compares your air changes per hour at 50 Pa with homes of the same era, which is more useful than a single target number.

Does air sealing affect radon?

It can. Tightening a house changes the pressure difference with the soil, so test for radon before and after major air sealing.

Blower door test near Saanich

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