What should I do with my A/C unit in the winter?

— Jon Chebeague Island, ME

Answered by Harold Remlinger, AIA, LEED AP, NCARB on December 18, 2012

Please list best green kitchen cabinet makers in the Phila. area.

— julie williams Blue Bell, PA

Answered by Harold Remlinger, AIA, LEED AP, NCARB on December 18, 2012

Do I need special discarding measures with CFLs?

— Cheryl Headlee Xenia, IL

Answered by David Bergman on December 18, 2012

Can I modify my old toilet to be more water efficient?

— Pat Monahan Federal Way, WA

Answered by Scott Grieves, CPM, CEA on December 18, 2012