Cold storage and deep freeze rooms unnecessary loose large amounts of energy when their doors are opened because the cold air flowing outwards and warm air flowing inwards.Besides this loss of energie other problems occur, such as: a rise in room temperature, fog and ice can build up. On request Tekadoor air curtains can be supplied with energy saving EC motors. By using these EC motors running costs of air curtains can be reduced by 40 % compared with units using conventional motors. A ZEPHYR COOL is an economical and effective solution to keep the cold air inside and the warm air outside. This results in substantial savings in energy costs, due to the availability to keep temperature and humidity of the room ar the same level whilst the doors are opened.