Thermal regulations (RT)
Ventilation: function and challenges

The building sector is France's biggest energy consumer (42.5% of total end-use energy) and generates 23% of greenhouse gas (GHG) emissions.

Expenses tend to increase with rising energy prices. The average annual heating bill is €900 per household (ranging from €250 for a low-energy house to over €1,800 for a poorly insulated house). In order to reduce energy costs over the long term, the Grenelle Environment Round Table launched a program to reduce the energy consumption of buildings (art. 3 to 6 of the "Grenelle 1" law of August 3, 2009). Since the first thermal regulations were introduced (1974), the energy consumption of new buildings has been halved. The Grenelle Environment Round Table has set a target of a further 3-fold reduction,...