Natural Resources Canada

Tier 1 - Government, Regulators, Standards Bodies

We cite 75 sources from Natural Resources Canada across our Ontario HVAC and home energy guides.

See our verification methodology for how we vet sources.

Cited Sources

• energy-efficiency-homes
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/energy-efficiency-homes
  Cited in: ac-blower-motor-start-capacitor-ontario, ac-capacitor-replacement-ontario, ac-compressor-hard-start-kit-ontario, ac-compressor-not-running-ontario, ac-compressor-warranty-claim-ontario +106 more
• heating-cooling-heat-pump
  https://natural-resources.canada.ca/energy-efficiency/energy-star/heating-cooling-heat-pump
  Cited in: ac-maintenance-ontario, ac-repair-cost-ontario, central-air-conditioner-cost-ontario, chimney-relining-ontario, ductless-mini-split-cost-ontario +23 more
• keeping-heat
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/keeping-heat
  Cited in: ac-dehumidification-only-mode-ontario, bathroom-exhaust-fan-ontario, furnace-combustion-air-makeup-ontario, furnace-filter-cabinet-gap-leak-ontario, home-office-hvac-ontario +10 more
• air-source-heat-pumps
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/air-source-heat-pumps
  Cited in: central-air-conditioner-cost-ontario, ductless-vs-central-ac-ontario, heat-pump-vs-furnace-ontario, heat-pumps
• energuide
  https://natural-resources.canada.ca/energy-efficiency/product-energy-ratings/energuide
  Cited in: ac-quote-bundle-rebate-stacking-ontario, hvac-blower-door-test-ontario, hvac-for-century-homes-ontario
• step-3-retrofit-your-home
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/step-3-retrofit-your-home
  Cited in: ductless-mini-split-cost-ontario, electrical-panel-upgrade-cost-ontario, geothermal-heat-pump-cost-ontario, heat-pump-vs-furnace-ontario, home-battery-backup-ontario +7 more
• heating-equipment-residential-use
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/heating-equipment-residential-use
  Cited in: agricultural-hvac-ontario
• oil-heat-pump-affordability-program
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/oil-heat-pump-affordability-program
  Cited in: canada-greener-homes-ontario, heat-pump-tax-credit-canada, hvac-replacement-cost-ontario, oil-to-heat-pump-conversion-ontario, ontario-home-energy-rebates
• keeping-heat-section-9-operating-your-house-thermostats-water-heaters-furnaces-other-heatingcooling-systems
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/keeping-heat-section-9-operating-your-house-thermostats-water-heaters-furnaces-other-heatingcooling-systems
  Cited in: portable-air-conditioner-ontario
• list-certified-products
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products
  Cited in: ev-charger-home-install-ontario, natural-gas-furnace-lifespan-ontario
• guide-residential-water-heaters
  https://natural-resources.canada.ca/stories/spotlight-energy-efficiency/guide-residential-water-heaters
  Cited in: gas-vs-electric-water-heater-ontario, heat-pump-water-heater-ontario, rent-vs-buy-water-heater-ontario, tankless-vs-tank-water-heater-ontario, water-heater-cost-ontario +3 more
• energuide-energy-efficiency-home-evaluations
  https://natural-resources.canada.ca/energy-efficiency/product-energy-ratings/energuide/energuide-energy-efficiency-home-evaluations
  Cited in: energy-audit-ontario, ontario-hvac-rebate-stacking-guide
• storage-tank-water-heaters
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/storage-tank-water-heaters
  Cited in: tankless-vs-tank-water-heater-ontario, water-heater-sizing-ontario, water-heaters
• tankless-water-heaters
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/tankless-water-heaters
  Cited in: tankless-vs-tank-water-heater-ontario, water-heater-sizing-ontario, water-heaters
• canada-greener-homes-affordability-program
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/canada-greener-homes-affordability-program
  Cited in: canada-greener-homes-ontario, heat-pump-tax-credit-canada, home-renovation-savings-program-ontario, hybrid-heating-systems-ontario, oil-to-heat-pump-conversion-ontario +1 more
• canada-greener-homes-initiative
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/canada-greener-homes-initiative
  Cited in: energy-audit-ontario
• heat-pump-water-heaters
  https://natural-resources.canada.ca/energy-efficiency/energy-efficiency-regulations/heat-pump-water-heaters
  Cited in: gas-vs-electric-water-heater-ontario, heat-pump-water-heater-ontario, tankless-vs-tank-water-heater-ontario, water-heater-sizing-ontario, water-heaters
• new-homes
  https://natural-resources.canada.ca/energy-efficiency/energy-star/new-homes
  Cited in: hvac-commissioning-testing-ontario
• heat-energy-recovery-ventilators
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/heat-energy-recovery-ventilators
  Cited in: hrv-vs-erv-ontario, indoor-air-quality-ontario
• residential-furnaces
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/residential-furnaces
  Cited in: afue-furnace-efficiency-explained-ontario
• room-air-conditioners
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/room-air-conditioners
  Cited in: portable-air-conditioner-ontario, window-ac-install-ontario
• canada-greener-homes-initiative-highlights-program-updates
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/canada-greener-homes-initiative-highlights-program-updates
  Cited in: canada-greener-homes-ontario, ontario-home-energy-rebates
• canada-greener-homes-loan
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/canada-greener-homes-loan
  Cited in: heat-pump-fuel-switching-payback-ontario, hvac-financing-options-ontario
• closed-canada-greener-homes-grant-0
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/closed-canada-greener-homes-grant-0
  Cited in: canada-greener-homes-ontario, ontario-hvac-rebate-stacking-guide
• keeping-heat-section-5-roofs-attics
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/keeping-heat-section-5-roofs-attics
  Cited in: attic-air-sealing-ontario
• energuide-rating-system-version-15
  https://natural-resources.canada.ca/energy-efficiency/product-energy-ratings/energuide/energuide-rating-system-version-15
  Cited in: attic-air-sealing-ontario
• smart-thermostats
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/smart-thermostats
  Cited in: smart-thermostat-cost-ontario
• publications
  https://natural-resources.canada.ca/energy-efficiency/energy-star/publications
  Cited in: forced-air-vs-boiler-ontario
• keeping-heat-section-2-your-house-works
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/keeping-heat-section-2-your-house-works
  Cited in: attic-insulation-cost-ontario
• zero-emission-vehicle-infrastructure-program
  https://natural-resources.canada.ca/energy-efficiency/transportation-energy-efficiency/zero-emission-vehicle-infrastructure-program
  Cited in: electrical-panel-upgrade-cost-ontario, ev-charger-home-install-ontario, ev-charger-installation-cost-ontario
• canmetenergy
  https://natural-resources.canada.ca/science-data/science-research/research-centres/canmetenergy
  Cited in: geothermal-retrofit-existing-home-ontario
• heat-pump-basics
  https://natural-resources.canada.ca/energy-efficiency/electric-heat-pumps/heat-pump-basics
  Cited in: ductless-vs-central-ac-ontario, geothermal-heat-pump-cost-ontario
• central-air-conditioners-heat-pumps
  https://natural-resources.canada.ca/energy-efficiency/energy-efficiency-regulations/central-air-conditioners-heat-pumps
  Cited in: ac-repair-cost-ontario, portable-air-conditioner-ontario
• gas-fired-storage-water-heaters-household
  https://natural-resources.canada.ca/energy-efficiency/energy-efficiency-regulations/gas-fired-storage-water-heaters-household
  Cited in: tankless-vs-tank-water-heater-ontario, water-heaters
• products
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products
  Cited in: furnace-filter-guide-ontario
• energy-star-most-efficient
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/energy-star-most-efficient
  Cited in: electric-baseboard-heat-cost-ontario
• ductless-heating-cooling
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/ductless-heating-cooling
  Cited in: portable-air-conditioner-ontario
• residential-boilers
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/residential-boilers
  Cited in: combi-boiler-ontario
• windows-doors-skylights
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/windows-doors-skylights
  Cited in: windows-doors-cost-ontario
• become-nrcan-registered-energy-advisor
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/become-nrcan-registered-energy-advisor
  Cited in: home-renovation-savings-program-ontario
• eligibility-criteria
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/eligibility-criteria
  Cited in: canada-greener-homes-ontario
• eligibility-criteria-oil-heat-pump-affordability-program
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/eligibility-criteria-oil-heat-pump-affordability-program
  Cited in: canada-greener-homes-ontario
• eligible-retrofits-grant-amounts
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/eligible-retrofits-grant-amounts
  Cited in: canada-greener-homes-ontario
• products-are-listed-canada-greener-homes-initiative
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/products-are-listed-canada-greener-homes-initiative
  Cited in: seer2-hspf2-ratings-explained-ontario
• keeping-heat-section-8-upgrading-windows-exterior-doors
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/keeping-heat-section-8-upgrading-windows-exterior-doors
  Cited in: winter-window-condensation-ontario
• tools-industry-professionals
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/tools-industry-professionals
  Cited in: home-energy-assessment-ontario
• energystar.html
  https://natural-resources.canada.ca/sites/nrcan/files/energystar.html
  Cited in: hrv-vs-erv-ontario, ontario-building-code-hvac
• home
  https://cwfis.cfs.nrcan.gc.ca/home
  Cited in: hvac-smoke-wildfire-indoor-air-ontario
• energy-efficiency
  https://natural-resources.canada.ca/energy-efficiency
  Cited in: energy-audit-ontario-rebates
• energy-efficiency-regulations
  https://natural-resources.canada.ca/energy-efficiency/energy-efficiency-regulations
  Cited in: furnace-chimney-vs-direct-vent-ontario
• electric-water-heaters
  https://natural-resources.canada.ca/energy-efficiency/energy-efficiency-regulations/electric-water-heaters
  Cited in: heat-pump-water-heater-ontario
• gas-furnaces
  https://natural-resources.canada.ca/energy-efficiency/energy-efficiency-regulations/gas-furnaces
  Cited in: ontario-building-code-hvac
• gas-furnaces-0
  https://natural-resources.canada.ca/energy-efficiency/energy-efficiency-regulations/gas-furnaces-0
  Cited in: heat-pump-vs-furnace-ontario
• ground-source-heat-pumps
  https://natural-resources.canada.ca/energy-efficiency/energy-efficiency-regulations/ground-source-heat-pumps
  Cited in: heat-pumps
• energy-star-canada
  https://natural-resources.canada.ca/energy-efficiency/energy-star-canada
  Cited in: common-hvac-install-mistakes-ontario
• energy-star-general-updates
  https://natural-resources.canada.ca/energy-efficiency/energy-star/about/energy-star-general-updates
  Cited in: seer2-vs-seer-ontario
• heating-electricity
  https://natural-resources.canada.ca/energy-efficiency/energy-star/heating-electricity
  Cited in: winter-heating-bills-ontario
• cooling-ventilating-equipment-residential-use
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/cooling-ventilating-equipment-residential-use
  Cited in: portable-air-conditioner-ontario
• heat-pump-water-heaters
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/heat-pump-water-heaters
  Cited in: heat-pump-water-heater-ontario
• water-heaters
  https://natural-resources.canada.ca/energy-efficiency/energy-star/products/list-certified-products/water-heaters
  Cited in: heat-pump-water-heater-ontario
• canada-greener-homes-grant-0
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/canada-greener-homes-grant-0
  Cited in: seer2-vs-seer-ontario
• closed-canada-greener-homes-grant
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/canada-greener-homes-initiative/closed-canada-greener-homes-grant
  Cited in: seer2-vs-seer-ontario
• energy-efficiency-housing-initiatives
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/energy-efficiency-housing-initiatives
  Cited in: kitchen-renovation-cost-ontario
• find-service-organizations-existing-homes
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/find-service-organizations-existing-homes
  Cited in: home-energy-assessment-ontario
• find-service-provider
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/find-service-provider
  Cited in: home-energy-assessment-ontario
• keeping-heat-section-3-materials-insulation-house-wrap-barriers-weatherstripping
  https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/keeping-heat-section-3-materials-insulation-house-wrap-barriers-weatherstripping
  Cited in: attic-insulation-cost-ontario
• oil-pricing
  https://natural-resources.canada.ca/energy-sources/fossil-fuels/oil-pricing
  Cited in: natural-gas-vs-propane-ontario
• greener-homes-initiative-progress-update-january-2026
  https://natural-resources.canada.ca/greener-homes-initiative-progress-update-january-2026
  Cited in: hvac-replacement-cost-ontario
• cooling-heating-season-performance-assessment-cold-climate-air-source-heat-pump-canadian-centre-housing-technology
  https://natural-resources.canada.ca/maps-tools-publications/publications/cooling-heating-season-performance-assessment-cold-climate-air-source-heat-pump-canadian-centre-housing-technology
  Cited in: central-air-conditioner-cost-ontario
• cooling-heating-season-performance-assessment-mini-split-cold-climate-air-source-heat-pump-canadian-centre-housing-technology
  https://natural-resources.canada.ca/maps-tools-publications/publications/cooling-heating-season-performance-assessment-mini-split-cold-climate-air-source-heat-pump-canadian-centre-housing-technology
  Cited in: ductless-vs-central-ac-ontario
• EBCx_Fact_Sheet_Heat-Pump-Technologies.pdf
  https://natural-resources.canada.ca/sites/nrcan/files/canmetenergy/files/pdf/EBCx_Fact_Sheet_Heat-Pump-Technologies.pdf
  Cited in: heat-pumps
• 16-0114%20Home%20Ventilation_access_eng.pdf
  https://natural-resources.canada.ca/sites/nrcan/files/energy/pdf/16-0114%20Home%20Ventilation_access_eng.pdf
  Cited in: bathroom-renovation-cost-ontario
• WaterHeaterGuide_e.pdf
  https://natural-resources.canada.ca/sites/nrcan/files/energy/pdf/energystar/WaterHeaterGuide_e.pdf
  Cited in: water-heater-sizing-ontario
• HRV_EN.pdf
  https://natural-resources.canada.ca/sites/nrcan/files/oee/files/pdf/publications/HRV_EN.pdf
  Cited in: hrv-erv-installation-cost-ontario
• ?product=ASHP1_GH
  https://spl-lpi.nrcan-rncan.gc.ca/en-US/product/?product=ASHP1_GH
  Cited in: carrier-vs-lennox-vs-trane-ontario