What's the best product to use to seal ductwork?

— Daniel Shugrue Somerville, MA

Answered by Elliot Seibert on November 25, 2010

Should I go with an air source heat pump or electric radiant floor heat?

— Chris DiGiacomo Shirley, NY

Answered by Rick Goyette on September 1, 2010

What is the best furnace out there?

— Jerry Lawrence Aurora, CO

Answered by Dan Werner on August 26, 2010

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

— Brian Trenton, NJ

Answered by Scott Collins on June 17, 2010