Heat pumps in Île-de-France: the 8 départements

The table is filtered on Île-de-France: change the floor area, energy or insulation, or pick another region.

Île-de-France is the only region where MaPrimeRénov’ applies separate income ceilings, 30 to 40 % higher than in the rest of the country. The same household can therefore change colour, and flat rate, by crossing the regional border. Example: a household of 3 with €45,000 of reference tax income is yellow in Seine-et-Marne and purple in Oise, a few kilometres away; for an air-to-water heat pump it receives €9,000 of grants in all in the first case and €7,200 in the second. All eight départements are in climate zone H1, which gives the highest CEE bonus factor. Climate does vary: Paris benefits from the urban heat island with 1,835 degree-days at the Luxembourg station, while Val-d’Oise has 2,397 at Pontoise. The table works out the heat pump’s consumption, the saving and the bonus for each département, at today’s energy prices.

DépartementDJUZoneBefore / yrHeat pump / yrSavingCEE
75 Paris1,835H1€1,897€829€1,068€7,985
94 Val-de-Marne1,921H1€1,986€868€1,118€7,985
92 Hauts-de-Seine2,161H1€2,234€976€1,258€7,985
93 Seine-Saint-Denis2,211H1€2,286€999€1,287€7,985
91 Essonne2,222H1€2,297€1,004€1,293€7,985
77 Seine-et-Marne2,284H1€2,361€1,032€1,329€7,985
78 Yvelines2,324H1€2,402€1,050€1,353€7,985
95 Val-d'Oise2,397H1€2,478€1,083€1,395€7,985

HDD: 2015-2024 average at the reference Météo-France station (18 °C base). CEE bonus for a middle-income household, Coup de pouce included. 8 départements shown. Method

Checked by Radif Partners · Editorial policy · Method and sources

The eight départements, from mildest to coldest

100 m² averagely insulated house, gas boiler replaced by an air-to-water heat pump; HDD 2015-2024 Météo-France; CEE bonus with Coup de pouce at the September 2026 Emmy standard price; * station in a neighbouring département
DépartementStationHDDZoneHeat pump electricitySaving / yrCEE bonus
Paris (75)Luxembourg1,835H14,176 kWh€1,068€7,985
Val-de-Marne (94)Joinville1,921H14,372 kWh€1,118€7,985
Hauts-de-Seine (92)Longchamp*2,161H14,918 kWh€1,258€7,985
Seine-Saint-Denis (93)Neuilly-Sur-M.2,211H15,032 kWh€1,287€7,985
Essonne (91)Bretigny_Sapc2,222H15,057 kWh€1,293€7,985
Seine-et-Marne (77)Melun2,284H15,198 kWh€1,329€7,985
Yvelines (78)Versailles- Inrae2,324H15,289 kWh€1,353€7,985
Val-d'Oise (95)Pontoise - Aero2,397H15,455 kWh€1,395€7,985

The gaps are moderate: every département in the region is in zone H1 and the CEE bonus is the same for a given house. What changes is the amount of heating, and so the saving. The interactive table at the top of the page redoes the calculation with your floor area, energy and insulation.

Income ceilings specific to the region

Maximum reference tax income for each MaPrimeRénov’ colour in 2026; above the purple ceiling the household is pink
PeopleBlue IdFBlue elsewhereYellow IdFYellow elsewherePurple IdFPurple elsewhere
1€24,031€17,363€29,253€22,259€40,851€31,185
2€35,270€25,393€42,933€32,553€60,051€45,842
3€42,357€30,540€51,564€39,148€71,846€55,196
4€49,455€35,676€60,208€45,735€84,562€64,550
5€56,580€40,835€68,877€52,348€96,817€73,907

With €45,000 of income for 3 people, the example household is yellow in Île-de-France: a €4,000 flat rate for an air-to-water heat pump and a €7,985 CEE bonus, leaving €6,788 to pay on a €15,788 quote. In Oise it would be purple: a €3,000 flat rate, a €4,810 bonus, €8,588 left to pay. The ceilings come from the Service-Public page on MaPrimeRénov’; the detail by colour is on the income ceilings page.

Houses in the outer ring, flats in the inner ring

The CEE bonus follows sheet BAR-TH-171: it is almost twice as high for a house as for a flat of similar size. The outer ring, made of detached houses, therefore gets the highest bonuses; Paris and the inner ring are mostly apartment buildings, covered on the apartment heat pump page.

Frequently asked questions

Do you have to live in Île-de-France to get the regional ceilings?

Yes: what counts is the address of the home where the work is done, in one of the region’s eight départements. A household living in Île-de-France but renovating a main residence in Oise or Eure falls under the ceilings for the rest of France. The calculator applies the rule according to the département selected.

Why does Paris use less heating than the outer suburbs?

The city holds heat: concrete, asphalt, heating and traffic add one or two degrees in winter. The Luxembourg station records 1,835 degree-days a year on average, against more than 2,200 at Melun or Pontoise. For the same house, the heat pump produces less heat there and the yearly saving is smaller.

Can a heat pump be fitted in a Paris apartment building?

Yes, but it needs the co-ownership’s approval as soon as the outdoor unit touches the façade, the roof or a shared courtyard, and often an opinion from the Architecte des Bâtiments de France in protected areas. The apartment heat pump page covers the cases and the CEE bonus for flats.

Related pages and calculations

Sources

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Data 2026, reread on