12-24 volt fan-cooled refrigeration units suitable for mounting in new or existing ice boxes. The fan-cooled compressor can be mounted up to two metres from the evaporator box or plate. Flat evaporators can be carefully formed to suit box size. Low voltage cut-off and radio interference suppression are fitted as standard. Temperature is adjusted by a rotary thermostat incorporating an on/off switch. Connection of the evaporator plate to the compressor requires only a 30mm hole to be drilled in the ice box compartment wall. Utilises R134A ozone-friendly refrigeration gas.