French ventilation systems: types, performance and eco‑friendly buying guide

Ventilation in French buildings relies on VMC (ventilation mécanique contrôlée) units that create a pressure differential to extract stale air from kitchens, bathrooms and toilets. Three main types are used: simple‑flux autorégulable, which runs at a constant speed; hygrorégulable, which varies flow according to humidity and reduces energy use; and double‑flux, which incorporates a heat‑exchanger to recover energy but requires a larger duct network.

A separate guide from the Toulouse‑based company Ventil Eco compares eco‑friendly ventilation packs for professional settings. It lists prices and equipment for variants such as a high‑power kitchen hood with variable speed control, a professional fire‑rated exhaust system, and a compact VMC unit based on an Atlantic motor. The guide highlights that the professional hood pack costs more than three times a basic VMC, reflecting its higher airflow and fire‑resistance capabilities. Both articles stress that selecting the appropriate system can lower electricity bills and improve indoor air quality.