The DEFRO DRX 400 H recuperator has a Flow Balacing system that helps to reduce heating costs and allows you to maintain uniform air flow. This system automatically stabilizes the incoming air, thanks to which we maintain a constant flow. In addition, the DEFRO DRX 400 H recuperator has a By-pass 100%, which will start automatically and adjust to the outside temperature, so it provides fresh and cool air on an ongoing basis, which is very useful in the summer season. Properties and functions of the recuperator efficiency up to 450m3/h, efficiency up to 95%, anti-freeze system - modulated pre-heater (AFC - ANTI FREEZE CONTROL).