Thermal sieves and the new DPE: what are the lessons to be learned one year after its implementation

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Launched hastily, the DPE version 2021 experienced serious bugs. The ministry has reviewed its copy in the meantime, and the sector has worked a lot on it, setting up numerous internal processes and webinars for professionals. Having become enforceable, the new DPE is now reliable and has the capacity to give a clear image of the French housing stock. What lessons can be learned a year later?