Please suggest energy efficiency fixes that are reasonably priced for my 1850s home.

— Amy S Hollidaysburg, PA

Answered by Danny Kelly on September 22, 2011

How do I remove condensation from our interior low e storm windows?

— Jerry H. Hopkins, SC

Answered by David Willson on September 12, 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

Is it worthwhile putting spray foam between joists in my attic ceiling?

— Jim Doylestown, OH

Answered by David Willson on August 3, 2011