R405.7.6 Installation Criteria for Homes Using the Ceiling Fan Option
The ceiling fan option shall apply a 2 percent reduction in cooling energy use for the proposed design if one or more ceiling fans are installed in each of the bedrooms and a minimum of one ceiling fan is installed in all primary living areas (living rooms, family rooms or great rooms). This shall not include spaces designed to be dining rooms or dining areas. Areas separated by permanently fixed archways, walls or dividers shall be considered separate rooms. The following criteria shall be met:
- Ceiling fans shall be installed with minimum fan blade diameters of no less than those listed in Table R405.7.6 for the size and shape of the room.
- Where a primary living area is an "L-shaped" room and the smaller portion of this area is 8 feet by 10 feet (2438 mm by 3048 mm) or larger, a fan shall be installed in both the larger and smaller portions of the primary living area.
- Ceiling fans shall be ENERGY STAR certified.
Exception: Credit shall not be taken for both ceiling fans and cross ventilation.
FAN SIZING TABLE
|LONGEST WALL LENGTH (feet)||MINIMUM FAN SIZE (inches)|
|> 25||2 fans (minimum of 48 inches each)|
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.