How Kamloops is built
- Before 1961 11%
- 1961–1990 51%
- 1991–2000 15%
- 2001 or later 24%
Why the design temperature matters in Kamloops
−17.8°C is the 22nd-mildest design temperature of the 70 cities we cover. The F280 calculation works out how much heat each room loses on that design day, from the house's actual walls, windows, air leakage and ceiling insulation.
At −17.8°C, a cold-climate heat pump sized to the calculation can carry most of the season, and the number shows how much backup heat the coldest days need.
In the Kamloops area, 83% of households heat mainly with a forced-air furnace; natural gas is the main heating energy for 90% of households (Statistics Canada, 2023).
Kamloops's hot summers make the cooling side count too. CSA F280 covers cooling capacity as well as heating, so ask for both numbers: a heat pump sized only for winter can be too big for summer, which leaves rooms cool but clammy.
What CSA F280-12 asks for
The National Building Code 2020 requires the heating capacity for a house to be worked out with CSA F280, and its list of referenced documents names the 2012 edition, CSA F280-12. Provincial codes can name their own edition and climate values, so ask your designer which ones the calculation uses.
Why skipping it costs money
Contractors who size by square footage routinely oversize. An oversized heat pump costs more to buy, cycles on and off, dehumidifies poorly in summer and wears faster. An undersized one leans on backup heat. The F280 report is the evidence either way, and it's worth having before you compare quotes.
What it costs
About $150–$400 as a standalone calculation (a September 2026 planning range; quotes vary). Many energy advisors bundle it with an EnerGuide evaluation, which also gives the calculation measured air-leakage data instead of an assumption.
BC Southern Interior Okanagan and Thompson valleys
What this means in Kamloops’s climate
Hot, smoky summers and cold winters: plan cooling, filtration and heating together.
The Okanagan and Thompson valleys have cold winters and the hottest summer afternoons and driest air of any region we cover. Wildfire smoke often keeps windows shut in summer, and radon levels are among the highest in Canada. An EnerGuide evaluation here should cover heating, cooling, smoke filtration and a radon test together.
- Size cooling and heating together. Long hot spells mean a heat pump has to handle summer cooling as well as winter heat. Equipment sized for only one season can leave you uncomfortable in the other. Ask: Ask for a room-by-room heat-loss calculation that also covers cooling, before you collect heat pump quotes.
What else homes in Kamloops 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)
- Heating and Cooling With a Heat Pump (NRCan)
- Gas and heat pump hybrid systems (NRCan)
- Primary heating systems by household, Table 38-10-0286-01 (Statistics Canada)
- Wildfire smoke: protecting your health (Government of Canada)
- Wildfire smoke, filtration and cooling (Island Health)
- Canada's top weather stories of 2021 (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 2017 (ECCC)
Communities served
Area guide for the surrounding region, with every town and hamlet listed: Heat loss calculation in the Okanagan (West Kelowna, Vernon, Penticton, Summerland and more).
NRCan-licensed service organizations serving Kamloops
A service organization is a company that Natural Resources Canada (NRCan) licenses to deliver EnerGuide evaluations; its registered energy advisors do the home visit. Many energy advisors also do room-by-room CSA F280 calculations for an extra fee; HVAC designers do them too. Ask for the F280 report itself, not just an equipment recommendation.
- Acacia Engineering
- Capital Home Energy
- Energy Werx Profile
- Enerhome Consulting
- EnerSolution Profile
- ER Energy Solutions
- GETS Energy
- Green Canada Home Advisors Profile
- Greenbrain Profile
- HomeTech Energy Solutions
- Isle Energy Consulting
- Sensible Home Inspections
- The Energuy Profile
- VerdaTech Energy Management and Consulting
- Canada Energy Audit Profile
- Engreen Home
- Green Think
- EnerVision
- City Green Solutions
- CoEfficient Building Science
Heat pump programs in Kamloops
Heat loss calculation in Kamloops: common questions
What design temperature is used for heat pump sizing in Kamloops?
NRCan's HOT2000 climate data gives −17.8°C for Kamloops. Your designer may use the building code's design value for Kamloops, which can differ slightly; ask which one the calculation uses.
What is CSA F280-12?
The 2012 edition of CSA F280, Determining the required capacity of residential space heating and cooling appliances. The National Building Code 2020 requires heating capacity for a house to be determined with it.
How much does a heat loss calculation cost?
About $150–$400 standalone as a planning range; often less when bundled with an EnerGuide evaluation.
Who does F280 calculations in Kamloops?
Many of the 20 NRCan-licensed organizations serving Kamloops offer them, as do HVAC designers. Ask for the F280 report itself.
Do rebate programs require a heat loss calculation?
Requirements vary by program and change often. Even where it isn't required, it is the best protection against an oversized or undersized system.