Green Energy Efficiency Questions

Can I use my tankless water heater to supply my heat pump?

— John Gallagher San Francisco, CA

Answered by Tracy Black, PE, LEED AP on July 2, 2010

Is fiberglass insulation or blown 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

I have a sun room that faces east in northern Maryland. I would like to improve its energy performance. What should I do first?

— Dave on the Bay Chesapeake City, MD

Answered by Paula Zimin on June 28, 2010

I need to replace insulation. I'm chemically sensitive and need product suggestions.

— Laura Quincy, CA

Answered by Kati Curtis, LEED AP ID&C, CID on June 28, 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'm interested in solar window film and I'm not sure which product to use. Solar Guard film (with metals) or 3M Prestige (no metals)?

— Susan Martinez Clifton, NJ

Answered by Florian Speier on June 21, 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

What brand of washer/dryer would you recommend? We want low-maintenance, energy efficient and Energy Star compliant.

— Jeff Issaquah, WA

Answered by Kristina Hahn | AIA | RA | LEED AP+HOMES on June 17, 2010

An exterior wall is 8" uninsulated CMU. We plan to install board insulation on the interior. What is best to avoid basement moisture issues?

— Gary Concord, NH

Answered by David Edwards PhD on June 10, 2010

Should I get vinyl replacement windows or use plastic sheeting over my existing windows?

— Julie Reimers Denver, CO

Answered by Kristina Hahn | AIA | RA | LEED AP+HOMES on June 10, 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

The old shed needs a budget makeover, mainly the roof. Can I paint the asphalt shingle roof? What product would you recommend?

— Cathy Frederick, MD

Answered by David Edwards PhD on June 9, 2010

A new neighbor says they are building a green home. Why is the contractor using Styrofoam?

— Ken Richmond, VA

Answered by William Fry on June 6, 2010

 

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