France has 5.2 million thermal strainers among the 30 million main residences, according to the National Observatory for Energy Renovation (ONRE). This represents 17% of the stock of main residences that have an F or G label for their energy performance diagnosis (DPE). In detail, the most common accommodations obtain a D label (32%). C labels represent 24% of the park, just ahead of E labels (22%) according to the report of the body attached to the Ministry of Ecological Transition.

But the number of thermal strainers is even more important when looking at the ECD of second homes, reports Capital. 1.2 million, or 32% of them, are affected by an F or G label. 0.8 million vacant homes (or 27% of the stock) also benefit from the two worst DPE labels. This means that in total, in France, we have 7.2 million energy strainers, or 19.5% of the entire stock.

The rental stock is more affected by poor ECDs. There are 1,579,000 thermal colanders. This represents 19.8% of the park. Some landlords will therefore have to act if they want to continue to rent their homes.

Indeed, from January 1, 2023, accommodation exceeding a consumption of 450 kWh per square meter and per year cannot be rented out. Currently, 140,000 properties rented by individuals are in this case, according to the ONRE. Social housing is not spared, but is less affected. 51,000 goods in the social stock are classified as thermal sieves. For all these energy-intensive homes, work will be necessary.

It should be noted that individual houses are more affected by disastrous DPEs than collective housing (19.6% against 14.5%). Smaller dwellings are also more affected than others. Nearly 34% of dwellings of less than 30 square meters obtained an F or G label. This is almost three times more than those of more than 100 square meters (13%). Reported per square meter of surface, heat losses and thus heating consumption are greater for small surfaces.