Several research works has revealed that Revolving doors are the most energy efficient entrance solution available today as they are the most ideal for maintaining a steady temperature in rooms, dutiful of energy consumption and useful for overcoming architectural barriers.
The always open, always closed principle of a revolving door ensures that the conditioned inside air and the unconditioned outside air remain separated, preventing draft, dust and noise coming into the building. As less energy is required to maintain the conditioned climate inside the building, revolving doors help reduce the carbon footprint of a building and save both energy and cost.