Would hallway lighting that uses motion sensors reduce costs in a 288 unit coop?

— Alex Westin Woodhaven, NY

Answered by David Bergman on April 10, 2012

Are there any high efficacy luminaires that are 100% American made?

— Toby Broemmeling Spokane, WA

Answered by David Bergman on February 21, 2012

How do I make sure a residential condominium has good and proper lighting?

— JC Soriano Pasadena, CA

Answered by David Bergman on January 12, 2012

Is there a dimmer that works with LED bulbs?

— Steve Kawell Durango, CO

Answered by Elizabeth DiSalvo on January 6, 2012