Can I use house plants to improve my home's indoor air quality?

— Tom Neff Fishers, IN

Answered by Richard Heller on August 3, 2010

Is there a way to test my carpet padding for PBDEs?

— Mary Hull Lake Oswego, OR

Answered by Kirsten Flynn on August 3, 2010

What do you know about a water softener product called Scale Blaster?

— Yesim Erke-Magent Allentown, PA

Answered by Matthew O'Toole on July 28, 2010

Which salt-free water conditioners will reduce scale?

— John W. Olver Pacific Grove, CA

Answered by Matthew O'Toole on July 16, 2010

When does MDF offgas? When the heat is on in the winter or throughout all seasons?

— Rachel Mitchell Rutland, MA

Answered by David Bergman on July 13, 2010

What are the "cleanest" materials for a fresh-air intake duct?

— Brian Trenton, NJ

Answered by Scott Collins on June 17, 2010