Is an attic fan a good investment or a waste of money?

— Mary Savage, MD

Answered by Polly Osborne, FAIA, LEED AP on October 29, 2012

Should I add fiberglass or cellulose to my attic insulation?

— Marsha Broomfield, CO

Answered by Edward Wright on October 19, 2012

What is best central heating system for a 1920s bungalow?

— Edward Memphis, TN

Answered by Elizabeth DiSalvo on October 19, 2012

How can a renter save money on winter power bills?

— Sherry Corvallis, OR

Answered by Richard Williams on October 12, 2012