HOLTOP AS-EC100-1 Preheater (2.5 kW NA250) for type AV-HTPF

The HOLTOP AS-EC100-1 is an electric pre-heater for ventilation systems, rated at 2.5 kW with a 250 mm connection diameter. It is designed for use with the AV-HTPF ventilation unit and provides safe pre-tempering of incoming outdoor air during the winter months.

The pre-heater is an in-duct model, which makes it straightforward to integrate into existing ventilation installations. It is fitted in the branch that draws fresh outdoor air into the building and warms the incoming air when required.

This helps prevent icing of the ventilation unit or its individual components. In systems with heat recovery, it particularly protects the heat exchanger and supports efficient, continuous operation. The pre-heater should be installed so that it runs only while the ventilation unit is operating and supplying fresh air through it into the building.