WALLER series heat recovery unit. The WALLER series heat exchanger is designed for ductless ventilation of premises such as a room, office space, cafe, etc. This device is intended for wall mounting. Thanks to the use of a reversible fan, WALLER is a complete supply and exhaust device that provides energy recovery from exhaust air.

WALLER can also operate in ventilation mode, both supply and exhaust only. In this case, complete mechanical supply and exhaust ventilation can be provided, for example, by two synchronously operating WALLER devices, where one supplies fresh air to the room, and the other extracts stagnant air. However, it should be noted that for devices operating in ventilation mode, energy recovery does not occur. The recuperator is controlled using a remote control, which greatly facilitates the management of its operation.