What is the most efficient water heater replacement system?

— Michael Snyder Potomac, MD

Answered by Scott Grieves, CPM, CEA on March 14, 2013

My house is always cold.

— Daisy Philadelphia, PA

Answered by Scott Grieves, CPM, CEA on March 6, 2013

What causes grout around shower tiles to crack?

— Pam Chippewa Falls, WI

Answered by Scott Grieves, CPM, CEA on March 6, 2013