It’s very straightforward: Every time a door is opened automatically, electricity is used; when opened manually, the electricity use is zero. Unless you truly need the assistance of the automatic door, resist using electricity to have the door opened for you and just open it by hand. Opening the door yourself is actually faster and more efficient than waiting for the motor. The slower speed of the automatic door also keeps it open longer, letting more heated or air-conditioned air leave the building. The high use of the automatic system also adds to its wear and tear, and a break-down of the system would have a greater impact on those who rely on this automation.
Read more at Recycle Nation.
Photo by Susan O'Donnell