Ontario's home heating and cooling equipment, 2000 to 2023

A short note on Ontario's residential heating and cooling equipment, built from the Ontario residential tables of Natural Resources Canada's Comprehensive Energy Use Database (2023 edition). It follows the main heating system of every occupied dwelling from 2000 to 2023, the efficiency class of the natural gas fleet, heat pumps and electric resistance heating, central and room air conditioning and its SEER, water heaters by energy source, and weather-adjusted space heating energy per square metre. In numbers. Heated dwellings 4.5 to 6.2 million. Natural gas share steady near two thirds. Normal-efficiency gas systems 1,427 thousand to none by 2020; high-efficiency gas systems 690 to 3,451 thousand (87% of gas systems); stock-weighted gas efficiency 73% to 89%. 530 thousand medium-efficiency gas systems remain. Heat pumps flat near 51 thousand to 2019, then 213 thousand in 2023. Central air conditioners 43 to 70 per 100 dwellings; stock SEER 9.6 to 13.5. Gas water heaters 66% to 74% of the stock. Space heating energy 347 PJ to 301 PJ with 39% more dwellings; weather-adjusted energy per square metre down 34%. What is here. The note (PDF, Typst source), seven source tables as long-format CSV, a derived indicator table by year, four SVG figures, the NRCan workbook as downloaded and as converted, the two scripts, and a definitions file. Source licence: Open Government Licence – Canada. Acknowledgement. The extraction and typesetting were paid for by Forbes Heating and Air Conditioning (https://forbesheatingandairconditioning.com) of St. Catharines, Ontario, a company whose daily work is what these tables count: installing and repairing gas furnaces, central air conditioners and water heaters, tank and tankless, in Niagara-region homes. It had no say in what the note says.