We need to replace our central air conditioner. What is the greenest way to go?

— Alice Martinez Hollywood, FL

Answered by Andrew Michler on September 29, 2010

The air flow on the central air is barely cool even at low temperature. What might be wrong?

— Tom Swanton, OH

Answered by Dennis Cheslik on July 30, 2010

Is fiberglass insulation or blown in insulation the best?

— Susan Franklin, TN

Answered by Randy Potter on July 1, 2010

Is three inches of batt insulation enough for my attic?

— Martin Bennett Bowie, MD

Answered by Steve Saunders on July 1, 2010

What kind of professional should I hire to certify energy efficiency resulting from installation of a variety of energy efficient devices?

— Maureen Levittown, NY

Answered by Danny Kelly on June 29, 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

I keep hearing that I should get a home energy audit. What should I expect to pay and expect to get?

— Marcia Hammond Oakland, CA

Answered by Steve Saunders on April 14, 2010

I am considering replacing aluminum windows and have heard that vinyl can offgas forever. Is this true?

— Cyndi Holcombe Coronado, CA

Answered by Alex Georgiou on March 4, 2010

What are the best ways to reduce my electric and propane consumption for heating and air conditioning? What should we do first?

— Gregory Ayres

Answered by Danny Kelly on January 28, 2010

How can we prevent car fumes from polluting our house through the attached garage?

— Anne Osher, Houston, TX

Answered by Jesse Terzi on April 23, 2009

 

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