The HK650-Fi-EC-N heat recovery ventilator provides up to 580 cubic feet per minute (274 L/s) of fresh outdoor air while exhausting an equivalent amount of stale indoor air, creating a well-balanced ventilation system. The highly efficient and quiet variable-speed EC motors use on average 80% less electricity of the H650-Fi-N at low speed, significantly increasing return on investment.

These ventilators are recommended for smaller nonresidential spaces or dedicated zones within larger buildings such as classrooms, common areas of residential complexes and indoor parking garages.

Designed for versatile indoor installation, Aldes light commercial ventilators can fit almost anywhere and still provide easy access to the internal components for quick maintenance. The units also offer a choice of five continuous operation speeds and a demand-controlled high speed exchange mode.