The GM series gas cooler is designed for small to medium transcritical CO₂ systems operating at high pressure. With a heat rejection capacity of up to 500 kW under nominal conditions (Tin 115°C, Tout 33°C, Tamb 35°C, pressure 91.7 bar), it’s well suited for commercial and industrial sites focused on efficiency and sustainability.

Its lightweight build and balanced weight distribution allow installation on medium-strength rooftops, making it a good fit where structural limits are a concern. The simple flat-frame design supports both flat and vertical configurations for flexible placement.

The GM cooler is built with 7.94 x 0.54 mm copper tubes, aluminium or copper fins, and EC fan motors. The frame is made from powder-coated galvanised steel for durability in varying environments.

A reliable part of Refra’s natural refrigeration systems, the GM series is available through Hussmann Australia and fits a wide range of air heat exchanger applications.