How St. John's is built
- Before 1961 22%
- 1961–1990 42%
- 1991–2000 11%
- 2001 or later 26%
What an evaluation finds in St. John's homes
Of St. John's's 42,120 houses (single-detached, semi-detached, row houses and duplexes), 22% were built before 1961 and 64% before 1991, according to the 2021 Census. The typical St. John's house dates from 1971–1980, 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.
St. John's gets about 4,578 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 −12.8°C. Those figures come from the climate data for St-John's International in HOT2000, the home-energy software Natural Resources Canada (NRCan) gives energy advisors. That's about 16% more heating demand than the middle of the 70 cities we cover. A long heating season: air sealing and insulation pay back well, and every leak costs money for months.
In the St. John's area, 58% of households heat mainly with electric baseboards, about 7% with a heat pump, about 7% with a boiler and radiators and about 6% with a forced-air furnace; electricity is the main heating energy for 65% of households and oil for 12% (Statistics Canada, 2023). The heating system on the report shapes the recommendations: a forced-air furnace invites a ducted heat pump, electric baseboards a ductless one.
What it costs in St. John's
There's no province-wide price; takeCHARGE lists the service organizations working in the province without prices.
- Make the Shift subsidized initial energy audit: For a limited time, Shift Program participants in St. John's can get an initial energy audit (EnerGuide) subsidized to $99, which the City describes as 80% off the regular cost. Book at maketheshiftnl.ca, 709-979-0362 or hello@maketheshiftnl.ca. Details
Most providers quote the initial (pre-upgrade) and follow-up (post-upgrade) visits separately. Rebate programs that pay on measured improvement need both, so ask for the combined price.
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.
Atlantic Canada Maritimes and Newfoundland
St. John's’s climate: Atlantic Canada
Damp, windy, icy winters and costly oil: switch to heat pumps, seal, test for radon.
Atlantic winters are wet, windy and icy rather than extremely cold, and summers are mild. Heating oil is still common and its price rose sharply in 2026, while heat pumps already heat many homes. An EnerGuide evaluation here should plan the move off oil, seal wind-driven leaks, fix moisture before insulating, and include a radon test.
In St. John's: St. John's averages about 31 days a year of freezing rain or drizzle, far more than any other city we cover, plus heavy snow and wind-driven rain. Seal and insulate the attic, fix moisture before insulating walls, and keep backup heat for storms.
Plan your move off oil
Oil prices rose 65% to 81% in a year, and corrosion is a leading cause of oil tank leaks. Cold-climate heat pumps can be up to three times as efficient as oil heating.
Seal wind-driven leaks and the attic
Wind pushes cold air through gaps, and heavy, wet snow with frequent freezing rain makes a leaky attic prone to ice dams.
Fix moisture before you insulate
Halifax, St. John's, Saint John and Charlottetown get enough wind-driven rain that new walls must have a rainscreen. Stop water getting into walls and basements before adding insulation.
When to book: Book the evaluation from December to March, on a calm day, for the best blower door and thermal scan results. Have oil equipment checked before winter, and start a 3-month radon test in fall.
Everything homes in St. John's 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)
- Heat pumps, Canada Greener Homes (NRCan)
- Heat pump basics (NRCan)
- Heating and Cooling With a Heat Pump (NRCan)
- Primary heating systems by household, Table 38-10-0286-01 (Statistics Canada)
- Household heating oil prices, Table 18-10-0001-01 (Statistics Canada)
- Electricity price comparison, April 2025 (Hydro-Québec)
- Prevent oil tank spills (Government of Nova Scotia)
- Canada's top weather stories of 2019 (ECCC)
- Canada's top weather stories of 2022 (ECCC)
- Canada's top weather stories of 2023 (ECCC)
- 2024 Cross-Canada Survey of Radon Exposure
- Guide for Radon Measurements in Homes (Health Canada)
- Conditions for thermal scans, ASTM C1060 summary (Cx Associates)
- Canada's top weather stories of 2020 (ECCC)
- Canada's top weather stories of 2021 (ECCC)
NRCan-licensed service organizations serving St. John's
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 St. John's postal codes. Coverage is the share of St. John's's urban postal areas each one lists.
- AmeriSpec Profile
- Canada Energy Audit Profile
- CLEAResult
- Homesol Building Solutions
- Sustainable Housing and Education Consultants Incorporated
- ThermalWise Green Building Cooperative
- Ecostep Energy Services
Rebates and financing an evaluation unlocks in St. John's
Home energy audit in St. John's: common questions
How much does a home energy audit cost in St. John's?
There's no province-wide price; takeCHARGE lists the service organizations working in the province without prices. St. John's also has a municipal evaluation subsidy for eligible homeowners.
How many companies do EnerGuide evaluations in St. John's?
NRCan's list of service organizations shows 7 licensed organizations with St. John's 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.