Use the Revloving Door Everytime

This my friends is an easy green idea that pretty much any abled body person can follow.  If you are going into a building and you have a choice between either a revolving door or a side door with no vestibule, use the revolving door.  First of all those side doors are meant for handicapped access and they are usually clearly marked, if you are using it and someone that physically can't using the revolving door comes up you'll feel like a schmuck, so just don't do it.  Secondly, if the air temp warmer or colder then the inside controlled temp, you are adding to the demand of the air handling system by adding cooler or warmer air into the building in very large bursts,especially if it is windy. The revolving door mixes air by the shear nature of the door and does not add to the demands of the air handling systems, therefore not adding to the energy demands of the building.  So bottom line if a revolving door is an option use it to help conserve energy.  

A side note to this one, because I see people doing it all the time, is hitting the ADA button to electrically open a door.  This wastes energy when you can just push on the door yourself if you are able. I think bottom line is if you are able bodied don't use the items clearly marked for those that are not. It is that simple.