We get a lot of dust in our house. Where could the dust be coming from?

— Warren San Francisco, CA

Answered by Randy Potter on November 4, 2010

I can't afford geothermal. Is an air-to-air heat pump my best option for heating?

— Chris Di Giacomo Shirley, NY

Answered by Randy Potter on October 16, 2010

I have five 4x6 sheets of old solar panel glass. What can I do with them to heat my house?

— Lynn Jackson Carson City, NV

Answered by Randy Potter on October 10, 2010

Is the Tundra flooring from Ikea safe?

— Silvia Wickenburg, AZ

Answered by Randy Potter on August 30, 2010

What makes a home a green home?

— Drew Baker Whiteland, IN

Answered by Randy Potter on August 20, 2010

What is a reasonably priced hard-surface flooring with low VOCs?

— mairiyn stefani Royal Oak, MI

Answered by Randy Potter on July 30, 2010

Is it feasible to reuse greywater as irrigation water?

— Lisa Larson Palm Desert, CA

Answered by Randy Potter on July 8, 2010