What are the next heating/cooling advancements beyond geothermal?

— Tom M. Rocky Hill, CT

Answered by Lucas Johnson on September 25, 2012

How do I reduce the heat entering through top floor windows on the west side?

— Baron Dallas, TX

Answered by Erik Henry on September 11, 2012

What is the best green insulation?

— Nancy Wilson San Diego, CA

Answered by Danny Kelly on July 24, 2012

Would a dual pane insulated glass door help against cold air?

— Jerry H. Hopkins, SC

Answered by Joel Hirshberg on July 23, 2012

What size AC do I need?

— Joey Kramer Phoenix, AZ

Answered by Scott Grieves, CPM, CEA on July 19, 2012