As heat exchangers are used in a wide variety of environments, they require a range of construction materials. Several different fin material options exist, allowing the heat exchanger to operate in environments ranging from mild office applications through to more aggressive coastal and manufacturing environments.

Three key fin materials are offered: the standard being natural aluminium, a pre-coated aluminium called “Blue Fin”, and copper. “Blue Fin” offers a further  level of resistance to environmental conditions, with copper offering the best possible protection.

NATURAL ALUMINIUM is the standard fin material used in all Coils Australia heat exchangers due to the excellent cost/performance combination it provides. When coated with Standard Finish corrosion protection this provides a highly cost effective solution for general operating conditions.


BLUE FIN is a high performance pre-coated aluminium fin material. Blue Fin appears as an anodised finish with a gloss blue tone that remains flexible. The Blue Fin coating is applied to the raw aluminium fin stock. For harsh environments that are particularly corrosive to aluminium, Blue Fin is the solution.


COPPER In applications where the heat exchanger can’t be easily replaced, it demands that the materials used in the coil provide the best possible corrosion resistance to maximise service life. With its superior thermal conductivity, corrosion resistance and strength compared with aluminium, copper is the ideal choice for demanding environments. Copper finned heat exchangers are more suited to environments where improved thermal performance is required. They are also suited to more abrasive environments because unlike a precoated fin, a copper finned coil will not wear out and fail.

D-COAT is a special coating that can reduce water residuals and stop oxidation which is the main reason why coils corrode. It contains antimicrobial additives which prevent the growth of bacteria and fungi. The D-COAT treatment are designed for use on commercial air conditioning coils, refrigeration, industrial coils, transport and other air conditioning equipment; coils, fins, tubes and all internal metal surfaces. These products can be installed on units before installation with great success. The D-COAT HVAC protective treatments inhibited corrosion on the non-ferrous metal fins and tubes, thus, extending the life of the equipment asset and helping maintain consistent airflow efficiencies. It offers chemical resistance and protection to the majority of aggressive environments.