Opened Reventon Farmer OpenAir unit heater showing water coil and fan

Photo: Mariusz Młynarczyk / CloudAir.tech

A Reventon unit heater of the 'Farmer OpenAir series' stands with its casing hinged open, exposing the axial fan on one side and the finned water coil with copper headers on the other. A product card and brochures sit in front, with 'HC-35 & HC-EC series' unit heaters mounted behind.