The Zehnder ComfoPost is an air to water exchanger for use with ComfoWell air distribution connections. The ComfoWell connections allows for selection flexibility, offering a range of rigid circular ductwork or Zehnder ComfoTube semi-rigid ductwork to attached. The ComfoPost is available in a variety of sizes to heat or cool the air supplied by the Zehnder ventilation system. The ComfoPost units are suitable for a wide range of airflows up to 166l/s (600m3hr), the CW6 is suitable for airflows up to 83.3l/s (300m3hr). The units are made of steel with aluminium and copper pipe forming the heating and cooling coils and are maintenance free.