Revolving doors at the entrance of a building prevent a permanent inflow of cold air from outside and a negative influence on the indoor climate, particularly in buildings where many persons walk in and out during the day. Although, it can not be avoided that each turn a substantial amount of air flows from outside to inside, and the other way round. Consequently, customers and employees get an unpleasant feeling of draught, especially in the direct surrounding area of the door.

The complete range of Biddle comfort air curtains manufacturers can be adapted such, that these are perfectly suitable for revolving architectural doors.

Thanks to the patented rectifier technology a high comfort level is guaranteed when passing the door (low discharge velocity) and the heat will remain in the building. The bundled airflow covers furniture the entire doorway, through which the efficiency is optimal. Draught is no longer noticeable. By linking multiple air curtains side by side, any door width can be covered, without interrupting the air stream, where discharge design grills are exactly adapted to the curve of the door. Both architects and climate specialists praise the performance and the flexibility of the concept.

A beautiful garden design, optimal efficiency and a long lifespan are characteristics for the Circular comfort air curtains.