How do I heat a greenhouse for the winter?

— Maury Parrottsville, TN

Answered by Sean Lintow Sr on October 17, 2013

What material is best to insulate my crawlspace?

— Patricia Jonesboro, AR

Answered by Sean Lintow Sr on October 17, 2013

What is the most efficient oil furnace for the home?

— Cindy Janaskie Salisbury, MD

Answered by Michael Holcomb on October 10, 2013

What is the best choice for insulating my home's crawlspace?

— Elizabeth Durham, NC

Answered by Michael Holcomb on September 30, 2013

Do I need a ridge vent if I have an attic fan?

— Chrissy Moorestown, NJ

Answered by Polly Osborne, FAIA, LEED AP on September 25, 2013

Should we replace the cast iron boiler in our 1968 home?

— Kathy L Mount Holly, NJ

Answered by Sean Lintow Sr on September 25, 2013

How do outside air vents work?

— Marlene Sargeant East Lansing, MI

Answered by Joshua Lloyd on September 12, 2013