Regulations
Ventilation of residential buildings

The standard NF DTU 68.3 replaces DTU 68.1 of 1995 and DTU 68.2 of 1993; it applies from 1^er September 2013 for private contracts, and from 1^er October 2013 for public contracts.

The drafting of the norme NF DTU 68.3 has been brought into line with European standards; it concerns single-flow self-regulating systems and gas-fired CMV systems for individual and collective housing.

This standard also applies to humidity-sensitive single-flow CMV systems.

Regulations governing ventilation in dwellings are set out in the decree of October 28, 1983, amending the decree of March 24, 1982. It specifies that ventilation must be...