Typical Hours of Use by Room
| Hours Per Day That Lights Are On (Assumed) | |
|---|---|
| Room | Hours Per Day |
| Kitchen | 3 |
| Living Room | 3 |
| Dining Room | 3 |
| Basement | 2.5 |
| Home Office | 2 |
| Bathroom | 1.5 |
| Garage | 1.5 |
| Entry, Foyer, or Mudroom (Single-Family) | 1.5 |
| Hallway (Single-Family) | 1.5 |
| Laundry Room | 1.5 |
| Bedroom | 1 |
| Closet | 1 |
| Night light | 12 |
| Multi-Family | |
| Hall (Multi-Family) | 24 |
| Entry (Multi-Family) | 24 |
| Stair (Multi-Family) | 24 |
| Exteriors | |
| Exterior (Single-Family) | 4 |
| Exterior, with dusk to dawn controller | 3 |
| Exterior, with dusk to dawn and motion detector controllers | 2.5 |
Typical hours of use were calculated as the median value (rounded to 0.5 hours) of five data sets collected from these references:
- U.S. Department of Energy. (2012). U.S. Lighting Market Characterization.
- Leslie, R, Conway, K. (1996). Lighting Pattern Book for Homes. McGraw-Hill Professional Publishing, New York, NY.
- New York State Energy Research and Development Authority. (2011). Impact Evaluation. NYSERDA CFL Expansion Program: Random Digit Dial and Onsite Survey Results.