Yukon · Energy · checked September 28, 2026

Ventilation and humidity assessments in Whitehorse

Condensation on windows, musty basements and stuffy bedrooms are ventilation and humidity problems, and they're easy to confuse with insulation problems. A ventilation assessment measures which one you have.

Get matched in Whitehorse → The ventilation and humidity assessment
A heat recovery ventilator on a basement wall with four insulated ducts running up between the joists

Cost

Part of an evaluation

Houses built since 2001

35%

Tighter houses that usually rely on an HRV or ERV

Houses built before 1961

8%

Older houses usually leak more and have less insulation

Winter design temperature

−36.4°C

Colder days mean more window condensation

How Whitehorse is built

Whitehorse's houses by when they were built Ten house shapes, one for each tenth of Whitehorse's 9,485 houses. Before 1961: 8%, 1961–1990: 41%, 1991–2000: 16%, 2001 or later: 35%. Older houses glow hotter.
  • Before 1961 8%
  • 1961–1990 41%
  • 1991–2000 16%
  • 2001 or later 35%
Each house stands for one in ten of Whitehorse's 9,485 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. More snow in the drawing means more heating degree-days: a longer, colder heating season. Sources: Statistics Canada 2021 Census (table 98-10-0233-01), NRCan HOT2000 climate data.

Why Whitehorse homes get humidity problems

Whitehorse gets about 6,522 heating degree-days a year, a measure of how much heating its climate needs, and its winter design temperature, the cold day heating systems are sized for, is −36.4°C. Those figures come from the climate data for Whitehorse in HOT2000, the home-energy software Natural Resources Canada (NRCan) gives energy advisors. On Whitehorse's coldest days, window glass and poorly insulated corners get cold enough for condensation at humidity levels that feel normal indoors, so winter humidity needs to stay at the lower end of the comfortable range.

Of Whitehorse's 9,485 houses (single-detached, semi-detached, row houses and duplexes), 8% were built before 1961 and 48% before 1991, according to the 2021 Census. Newer houses (35% of Whitehorse's were built since 2001) are tight and usually have an HRV or ERV that needs balancing and cleaning. Older houses that get air-sealed can lose the accidental ventilation they used to rely on.

Wildfire smoke reaches Whitehorse in some summers. The Government of Canada's advice is to keep windows and doors closed, limit exhaust fans and use the best filter your system can handle, so ask the advisor what your furnace or HRV can take. An HRV or ERV brings in outdoor air, so ask the installer or check the maker's instructions for how to run yours on smoky days.

What the assessment measures

  • Relative humidity in living areas and the basement.
  • Actual airflow from bath and kitchen fans, and whether they vent outside rather than into the attic.
  • How much fresh air the house gets, and whether an HRV or ERV is balanced.

The ventilation and humidity assessment in detail.

Related tests in Whitehorse

Mold and air quality testing in Whitehorse · Radon testing in Whitehorse

The North Yukon, NWT and Nunavut

What this means in Whitehorse’s climate

Extreme cold and costly energy: envelope first, reliable heat, safe oil tanks, permafrost.

Why it matters here: Checks that fresh air reaches a tight house without pushing indoor humidity past what the windows can handle.

Best timing: In mid-winter, when humidity limits are tightest.

  • Ventilate within humidity limits. A tight house needs fresh air, but at −40°C indoor relative humidity must stay very low, about 12% to 20% depending on the windows, to avoid frost and condensation. Ask: Ask for a ventilation assessment, and an HRV or ERV with frost protection.

What else homes in Whitehorse need →

Sources for this climate guide · checked October 26, 2026

NRCan-licensed service organizations serving Whitehorse

In Yukon, the territorial government's Energy Branch is the licensed service organization and arranges assessments with local energy advisors.

A service organization is a company that Natural Resources Canada (NRCan) licenses to deliver EnerGuide evaluations; its registered energy advisors do the home visit. Advisors assess ventilation and humidity as part of an evaluation and check that exhaust fans actually vent outside. Sizing an HRV or ERV may be extra.

  • Government of Yukon Energy Mines and Resources
    867-393-7063 100% of Whitehorse

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

Ventilation and humidity assessment in Whitehorse: common questions

HRV or ERV?

Both bring in fresh air and recover heat. An ERV also transfers some moisture, which helps keep very dry winter air from getting drier; an HRV suits houses that tend to run humid.

Why did condensation appear after we got new windows?

Tighter windows cut accidental air leakage, so humidity builds up. The fix is usually controlled ventilation, not leakier windows.

Is a ventilation assessment part of an EnerGuide evaluation in Whitehorse?

Advisors assess ventilation and humidity during the evaluation; HRV or ERV sizing may be an extra service.

Ventilation and humidity assessment near Whitehorse

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Sources

Checked September 28, 2026. Census figures are for the municipality (Yukon); climate data is NRCan's HOT2000 station Whitehorse (1 km away).

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