Vapor from electronic cigarettes and second-hand smoke from marijuana is now included in the most recent version of ASHRAE’s indoor air quality HVAC construction standard. The new version of Standard 62.1, which covers ventilation and air quality in commercial and institutional buildings, expands the definition of “environmental tobacco smoke”.
The standard also revises operation and maintenance requirements for commercial buildings. It contains changes that affect high-rise residential spaces, the indoor air quality procedure, laboratory exhaust and demand control ventilation. Multi-family residential units have been removed from the standard and are now covered in Standard 62.2. Common spaces such as corridors, lobbies and fitness rooms remain in 62.1.