Is there such a thing as green air duct cleaning for a condo a/c system?

— Leslie Cedar Pompano Beach, FL

Answered by Edward Wright on May 30, 2012

What's new with insulation?

— Eric Singer Clarksdale, MS

Answered by Joel Hirshberg on May 23, 2012

Do water heater timers work as advertised?

— Stephan Pollard Fayetteville, AR

Answered by Michael Holcomb on May 23, 2012

What's the best way to insulate the underground walls in our basement?

— Sarah Nugent Orland, ME

Answered by Michael Holcomb on May 7, 2012