How Yellowknife is built
- Before 1961 3%
- 1961–1990 54%
- 1991–2000 21%
- 2001 or later 22%
What an evaluation finds in Yellowknife homes
Of Yellowknife's 5,225 houses (single-detached, semi-detached, row houses and duplexes), 3% were built before 1961 and 57% before 1991, according to the 2021 Census. The typical Yellowknife house dates from 1981–1990, and an evaluation is how you find out what that means for yours: the blower door measures air leakage, the advisor inspects the attic, walls, basement, windows and heating system, and the report ranks upgrades by what they'd save.
Yellowknife gets about 7,856 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 −39.2°C. Those figures come from the climate data for Yellowknife in HOT2000, the home-energy software Natural Resources Canada (NRCan) gives energy advisors. That's the highest heating demand of the 70 cities we cover. Extreme cold and a very long heating season: envelope work comes first, and heating reliability is a safety issue.
Wildfire smoke reaches Yellowknife 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.
What it costs in Yellowknife
The Arctic Energy Alliance delivers subsidized EnerGuide evaluations: $200 + GST for a single-family existing home.
How a home energy assessment (EnerGuide evaluation) works
- Initial evaluation, about 2–3 hours. The advisor measures and inspects the house and runs the blower door test.
- Report and EnerGuide rating. You get the home's energy rating in gigajoules per year and a list of recommended upgrades with estimated savings.
- Do the work. Most rebate programs only count upgrades done after the initial evaluation.
- Follow-up evaluation. A second visit measures the improvement, which is what most rebates pay on.
The North Yukon, NWT and Nunavut
Yellowknife’s climate: The North
Extreme cold and costly energy: envelope first, reliable heat, safe oil tanks, permafrost.
The North has the longest, coldest winters we cover, with temperatures that reach −41°C. About half of Yukon homes heat with oil, and electricity costs more than in southern cities, so every bit of heat kept in saves real money. An EnerGuide evaluation here should put the building envelope first, then check heating reliability, oil tank safety, ventilation and humidity limits, and signs of permafrost movement.
In Yellowknife: Yellowknife has the highest heating demand of any city we cover, with about 89 days a year of wind chill below −30, and power costs well over 30¢/kWh once extra charges are added. Envelope upgrades save more here than almost anywhere else.
Envelope first: seal, insulate, upgrade windows
With the coldest winters we cover and costly fuel, envelope work saves more than equipment changes. Today's new-home minimums here, about R-59 attics and R-22 walls, are good targets.
Keep heat reliable and oil tanks safe
Oil is the main fuel, and losing heat at −40°C is serious. Permafrost movement can tilt oil tanks and strain fuel lines.
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.
When to book: Book the evaluation between October and April, when the cold makes leaks easy to find. Start a 3-month radon test in the heating season, and check the foundation in late summer, when thaw is deepest.
Everything homes in Yellowknife need →
Sources for this climate guide · checked October 26, 2026
- National Building Code of Canada 2020, climate data (NRC)
- Canadian Climate Normals 1991–2020 (ECCC)
- Keeping the Heat In (NRCan)
- Air-Source Heat Pump Sizing and Selection Guide (NRCan)
- Heat pumps, Canada Greener Homes (NRCan)
- Heating and Cooling With a Heat Pump (NRCan)
- Yukon Energy Facts 2024 (Yukon Bureau of Statistics)
- Household heating oil prices, Table 18-10-0001-01 (Statistics Canada)
- Residential electricity rates, April 2026 (ATCO Electric Yukon)
- Residential rate schedule, July 2026 (Naka Power, Yellowknife)
- Rates and riders (Naka Power, Yellowknife)
- Energy profile: Northwest Territories (Canada Energy Regulator)
- Energy profile: Yukon (Canada Energy Regulator)
- Keep Your House on Solid Ground: permafrost guide (Government of the NWT)
- Permafrost in Nunavut: a homeowner's guide (Government of Nunavut)
- Permafrost thaw mapping, Whitehorse area (Yukon University)
- 2024 Cross-Canada Survey of Radon Exposure
- Guide for Radon Measurements in Homes (Health Canada)
- Canada's top weather stories of 2022 (ECCC)
- Canada's top weather stories of 2023 (ECCC)
- Conditions for thermal scans, ASTM C1060 summary (Cx Associates)
NRCan-licensed service organizations serving Yellowknife
In the Northwest Territories, the Arctic Energy Alliance, a non-profit, is the licensed service organization for Yellowknife.
A service organization is a company that Natural Resources Canada (NRCan) licenses to deliver EnerGuide evaluations; its registered energy advisors do the home visit. Every organization below is licensed by NRCan to deliver EnerGuide evaluations and lists Yellowknife postal codes. Coverage is the share of Yellowknife's urban postal areas each one lists.
- Arctic Energy Alliance
Home energy audit in Yellowknife: common questions
How much does a home energy audit cost in Yellowknife?
The Arctic Energy Alliance delivers subsidized EnerGuide evaluations: $200 + GST for a single-family existing home.
How many companies do EnerGuide evaluations in Yellowknife?
NRCan's list of service organizations shows 1 licensed organization with Yellowknife postal codes (checked September 25, 2026).
How long does an EnerGuide evaluation take?
The initial visit usually takes two to three hours, including the blower door test. The follow-up visit after upgrades is shorter.