GREEN BUSINESS IN PRACTICE: Alan Preston installs new, energy-efficient windows at Runner’s Image, 219 E. State St., in downtown Rockford.
The new facade is composed of Energy Star-qualified Marvin windows and doors. Each Marvin window or door is made to order–not retrieved from a warehouse of finished products.
Energy-efficient windows have been proven to save on energy costs in both heating and cooling seasons.
Inefficient windows represent a major source of unwanted heat loss, discomfort and condensation problems during heating season and unwanted heat gain during cooling season.