Is there a tax incentive in Florida for using LEED?

— Betty Kapla Fort Myers, FL

Answered by Rob Smith, LEED AP H on January 20, 2011

We need to replace our boiler. Should we go to gas or stick with oil?

— Helen Torris Montclair, NJ

Answered by Raymond Pruban on December 29, 2010

Do tankless water heaters have to be flushed annually?

— Joan Buffalo, NY

Answered by Scott Johnson on December 23, 2010