Windows and doors work alongside heating and cooling systems and home insulation to increase household energy efficiency. Windows, doors, exterior vents, etc., are all part of what is known as the “house envelope.” The stronger the house envelope the greater the energy efficiency and cost savings. Energy-efficient windows can help maximize the performance of your home’s insulation, just as a good heating and cooling system can help regulate indoor air trapped by the house envelope and insulation. The new Kansas City Homes & Lifestyles Boulevard of Dreams Green Living Show Home demonstrates the benefits of building to increase energy efficiency with components such as double-pane, low-E glass windows. Eco-friendly insulation such as Green Fiber can add another layer of eco-consciousness to your house.