British Columbia · Energy · checked September 28, 2026

Duct leakage testing in Nanaimo

If some rooms never get warm, the problem is often the ductwork, not the furnace. Duct testing matters in Nanaimo homes that have forced-air heating or a ducted heat pump.

Get matched in Nanaimo → Duct leakage and airflow testing
A duct-testing fan on a basement floor connected by flexible duct to a furnace, a pressure gauge hanging from a joist

Typical cost

$200–$450

Forced-air furnaces

Not published

Electric baseboards

Not published

Houses built before 1991

54%

How Nanaimo is built

Nanaimo's houses by when they were built Ten house shapes, one for each tenth of Nanaimo's 33,520 houses. Before 1961: 15%, 1961–1990: 40%, 1991–2000: 18%, 2001 or later: 28%. Older houses glow hotter.
  • Before 1961 15%
  • 1961–1990 40%
  • 1991–2000 18%
  • 2001 or later 28%
Each house stands for one in ten of Nanaimo's 33,520 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.

Who needs it in Nanaimo

Of Nanaimo's 33,520 houses (single-detached, semi-detached, row houses and duplexes), 15% were built before 1961 and 54% before 1991, according to the 2021 Census. Ducts in older houses often run through unheated spaces with taped or unsealed joints, and supply runs to the far rooms are the first to suffer.

What the test shows

  • Total duct leakage, as a share of the system's airflow, measured with a duct-pressurization fan.
  • Airflow at each register, which explains why one bedroom is always cold.
  • Whether sealing and balancing will fix comfort problems before you buy bigger equipment.

Duct leakage testing in detail.

What it costs

About $200–$450 (a September 2026 planning range; quotes vary). It isn't part of a standard EnerGuide evaluation, so ask for it when you book if comfort is your main complaint.

NRCan-licensed service organizations serving Nanaimo

Duct leakage testing isn't part of a standard EnerGuide evaluation. Some of these organizations offer it, as do HVAC contractors with duct-testing equipment, so ask when you call.

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

Programs in Nanaimo

Provincial · needs an evaluation BC Home Energy Improvement Bonus $20 for every percentage-point your home improves — $750 minimum, $2,000 maximum — or $300 for any two upgrades Open Provincial CleanBC Energy Savings Program Free energy-saving upgrades for income-qualified BC households — insulation, heat pumps and more, installed at no cost Open · deadline Federal CMHC Eco Improvement premium refund 25% back on your CMHC mortgage insurance premium after $20,000 of energy renovations Open Federal Canada Greener Homes Affordability Program Free retrofits for low-to-median-income households in BC, Manitoba, Nova Scotia, PEI and Quebec — not available in Ontario Open · deadline

Duct leakage testing in Nanaimo: common questions

How much does duct leakage testing cost in Nanaimo?

Plan on about $200–$450. It is usually a separate service from an EnerGuide evaluation.

Is duct cleaning the same thing?

No. Cleaning removes dust; it doesn't find or seal leaks. A leakage test measures where air is lost.

Should I close vents in unused rooms?

Usually not. Closing registers raises duct pressure and can increase leakage elsewhere in the system.

Duct leakage testing near Nanaimo

Duct leakage testing in Richmond64 kmDuct leakage testing in Vancouver65 kmDuct leakage testing in Delta73 kmDuct leakage testing in Burnaby74 kmDuct leakage testing in Coquitlam83 km All 70 cities →

Sources

Checked September 28, 2026. Census figures are for the municipality (British Columbia); climate data is NRCan's HOT2000 station Comox (87 km away).

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