How It Works
The House as a System

Reducing energy use at home isn’t always as simple as replacing the light bulbs. When it comes to things like heating and cooling, different components of your house work together to determine how much energy is needed. For example, efficient insulation in the walls and roof make it harder for heat to escape, meaning that less energy is needed to keep the house warm. Even one change – like better window insulation – can have a big effect on reducing heating energy needs throughout the house.
Global Innovation