Teams money-saving savants at the home-improvement company draw from more than 20 years of construction and renovation experience to streamline energy efficiency in local homes. The handymen specialize in ferreting out sources of wasted energy—typically drafty or poorly insulated attics, roofs, and secret passages to underground bat caves. After assessing homes and energy bills, the team applies architectural science to determine how better to distribute heating or cooling. Simple procedures can dramatically reduce bills and conserve resources; an energy barrier, for instance, operates like a thermos, keeping heated rooms warm in the winter and air-conditioned rooms cool in the summer. Many of its services qualify homeowners for tax credits, which the expert staff will explain in depth.