The new Wolf CWL‑180 Excellent, CWL-300 Excellent and CWL‑400 Excellentcomfort mechanical ventilation units are distinguished by their light and compact design, removable plastic cross-countercurrent plate heat exchanger and low energy consumption with heat recovery of up to 95 %. The CWL‑300 Excellent and CWL‑400 Excellent include a bypass and electric preheater coil as standard.

In addition, all three models are available with an optional category F7 supply air filter. Furthermore, reheater coils, enthalpy heat exchangers, air quality sensors and humidity sensors are available as accessories.