Ontario · Energy · checked September 28, 2026

Duct leakage testing in Kingston

If some rooms never get warm, the problem is often the ductwork, not the furnace. In the Kingston area, 58% of households heat with a forced-air furnace, so duct losses affect many Kingston homes.

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

58%

Electric baseboards

Not published

Houses built before 1991

67%

How Kingston is built

Kingston's houses by when they were built Ten house shapes, one for each tenth of Kingston's 38,680 houses. Before 1961: 24%, 1961–1990: 44%, 1991–2000: 11%, 2001 or later: 21%. Older houses glow hotter.
  • Before 1961 24%
  • 1961–1990 44%
  • 1991–2000 11%
  • 2001 or later 21%
Each house stands for one in ten of Kingston's 38,680 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 Kingston

In the Kingston area, 58% of households heat mainly with a forced-air furnace; natural gas is the main heating energy for 50% of households (Statistics Canada, 2023).

Of Kingston's 38,680 houses (single-detached, semi-detached, row houses and duplexes), 24% were built before 1961 and 67% 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 Kingston

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.

Only assessments from the seven HRSP-approved organizations qualify for the $600 Home Renovation Savings rebate and its assessment-path upgrade rebates; each listing below says whether it's one of them.

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 Kingston

Duct leakage testing in Kingston: common questions

How much does duct leakage testing cost in Kingston?

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 Kingston

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