Is it more efficient to heat all rooms in a house or just those normally used?

— Dan Boivin Beverly Hills, CA

Answered by Jason Kliwinski on November 28, 2011

Building a 2-story home in Austin, TX. What insulation is best?

— Steve M Austin, TX

Answered by Jason Kliwinski on November 28, 2011

Which is better attic insulation -- ridge vents or turbines?

— Maurice Jaynes Plano, TX

Answered by Harold Remlinger, AIA, LEED AP, NCARB on November 28, 2011