What is the best window treatment material for a home with radiant heat?

— Chris Beebe Carbondale, CO

Answered by Sean Lintow Sr on December 31, 2012

Is radiant barrier sheathing worth using?

— Betty Wyse Saint Thomas, MO

Answered by Cynthia Phakos on December 19, 2012

What should I do with my A/C unit in the winter?

— Jon Chebeague Island, ME

Answered by Harold Remlinger, AIA, LEED AP, NCARB on December 18, 2012