Helios Fans KWL 500 W ET L

The Helios Fans KWL 500 W ET L is a compact ventilation unit designed for balanced ventilation in residential buildings and apartments, incorporating an efficient heat recovery system. It utilizes energy-saving EC fans and a highly effective plastic heat exchanger. Standard filters include an ISO Coarse 65% (G4) for both supply and exhaust air, with an optional ISO ePM1 50% (F7) fine filter available for enhanced outside air filtration, which can be integrated directly into the unit. Filter replacements can be performed tool-free for convenience. The unit features Helios easyControls3, allowing operation via an external control element or through the integrated LAN interface accessible on PCs, laptops, or mobile devices. Cloud-based control is also supported for remote management. A built-in humidity sensor, along with optional external air quality sensors, enables automatic demand-controlled ventilation. Additionally, the unit offers integration options with building management systems through a Modbus/​RTU interface or an optional KNX module.