We would like to design a flat-roof home that is green. What do we do with the ductwork?

— Elizabeth Houston, TX

Answered by Rich Franz-Ünder on July 20, 2010

What size AC unit should I use for a 1,986 sq. ft. home in Kingwood, Texas?

— Jason Kingwood, TX

Answered by Danny Kelly on June 24, 2010

Why does our AC kick on almost constantly at night, running a minute or so and then turning off?

— Liz San Antonio, TX

Answered by Rich Franz-Ünder on June 17, 2010

I am converting my oil burner to a high-efficiency gas heating system. What do I do with the oil tank and oil?

— Peter East Norwich, NY

Answered by Rick Goyette on June 9, 2010

Please recommend an energy efficient furnace for a 3,000 sq. ft. two-story with finished basement. Are there any potential rebates?

— Van Nguyen Lorton, VA

Answered by Karen Smuland on June 6, 2010

Should I follow my service company's advice and replace my current AC unit with a new "environmentally friendly" Freon unit?

— Gaby Mendelsohn Charleston, SC

Answered by Steve Saunders on June 2, 2010

My new apt. has inefficient electric heaters plugged directly into outlets. What can I replace these with without redoing the whole system?

— Andrea New York, NY

Answered by Bill Bradbury on June 1, 2010

We use baseboard heat and hot water that comes off an oil furnace: can we supplement with solar water heating?

— Jen H Castine, ME

Answered by David Edwards PhD on June 1, 2010

Does the USGBC approve air-conditioning installation in LEED-certified buildings?

— Edna Bronx, NY

Answered by Polly Osborne, AIA, LEED AP on May 27, 2010

I need to replace my A/C unit. What minimum SEER level should the new unit have?

— abraham Rio Rancho, NM

Answered by Tammy Schwolsky, LEED AP, GPR, HPwES on May 11, 2010

 

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