Can you help me select a high efficiency furnace?

— Jeffrey Vigneault, Redding, CT

Answered by Richard Parker on March 4, 2008

Are old appliances green because we are reusing, or not green because they are not Energy Star?

— Chris Tissot, North Hollywood, CA

Answered by David Bergman on October 2, 2007

Are induction cooktops better for indoor air quality than gas?

— Sara Edelman, Hillsboro, OR

Answered by Ricky Cappe on July 3, 2007