Floor heating gains popularity in France as energy‑saving solution

Low‑temperature floor heating is experiencing a resurgence in France. The ADEME and heat‑pump manufacturers promote the technology as a way to provide gentle, homogeneous warmth while reducing heating bills, provided the system is properly designed and the building is well insulated.

Two main variants exist. Hydraulic floor heating circulates water at 35‑45 °C through tubes in the slab, allowing heat‑pump efficiency to rise and limiting surface temperatures to about 28 °C. Electric floor heating uses cables or films for rapid heating of small areas but can increase electricity consumption if insulation is poor. Installation costs are higher than traditional radiators, but medium‑term energy savings are possible.

A recent case in Saint‑Étienne illustrates the need for correct regulation: a collective hydraulic system left on during a heat wave raised indoor temperatures above 30 °C and generated charges of over €900 per household. Proper sizing, regulation valves and regular maintenance are essential to avoid such over‑heating.