SECTION 4.506 INDOOR AIR QUALITY AND EXHAUST
4.506.1 Bathroom exhaust fans. Mechanical exhaust fans which exhaust directly from bathrooms shall comply with the following:
4.506.1 Bathroom exhaust fans. Mechanical exhaust fans which exhaust directly from bathrooms shall comply with the following:
- 1. Fans shall be ENERGY STAR compliant and be ducted to terminate outside the building.
- 2. Unless functioning as a component of a whole house ventilation system, fans must be controlled by a humidistat which shall be readily accessible.
Humidistat controls shall be capable of adjustment between a relative humidity range of 50 to 80 percent.
Note: For the purposes of this section, a bathroom is a room which contains a bathtub, shower or tub/shower combination.