Heat pumps: all 96 départements compared

The same heat pump project does not pay the same everywhere. Climate sets how much heat must be produced, and so the saving; the climate zone sets the CEE bonus factor; Île-de-France has its own MaPrimeRénov’ income ceilings. This table applies the site’s engine to the 96 mainland départements, with degree-days measured by Météo-France from 2015 to 2024 at the station nearest each main town. For an averagely insulated 100 m² house replacing a gas boiler with an air-to-water heat pump, the saving ranges from €543 a year in Haute-Corse to €1,592 in Lozère. Energy prices are the same everywhere: the regulated electricity tariff, the average gas price published by Eurostat, the national average oil price. You can sort by saving, climate or bonus, and filter by region. For a full calculation with your quote and income, use the calculator on the home page.