What alternative heating options are there for my home and husband's shop?

— Marvel Mickelson Detroit Lakes, MN

Answered by Harold Remlinger, AIA, LEED AP, NCARB on October 25, 2011

Can central air be installed in a 1950s home that has a floor furnace?

— Norma Wichita, KS

Answered by Michael Holcomb on September 6, 2011