Coatings Services

Modine CIS produces two kinds of coating to protect the coils within heating, ventilation, air conditioning and refrigeration units.


ElectroFin® E-Coat is a factory-applied solution which involves full immersion.

ElectroFin® E-Coat was designed to protect HVAC&R coils from corrosive environments and is a market-leading product, used by every major OEM.

It has excellent corrosion resistance, as well as uniformity of coverage and coating thickness, and is recognised internationally as the best corrosion protection for fin and tube heat exchangers in coastal environments.

ElectroFin® E-Coat benefits

    ElectroFin® E-Coat process

    Technical performance

    Colour - Black
    Dry film thickness ASTM D7091 0.6-1.2 mils
    Gloss - 60 degrees ASTM D523-89 65 - 90%
    Pencil hardness ASTM3363-00 2 H minimum
    Water immersion ASTM D870-02 >1000 hours at 100 degrees F
    Cross hatch adhesion ASTM D3359-97 4B-5B
    Impact resistance ASTM D2794-93 160 in./lbs. direct
    Salt spray ASTM B117-97 6,048+ hours
    Humidity ASTM D2247-99 1,000 hours minimum
    Durability - Very flexible, consistent film
    Heat transfer reduction ARI 410 Less than 1%
    Bridging - No bridging guaranteed
    Coating of enhanced fins - Up to 30 fins per inch
    pH range - 3-12
    Temperature limits - -40 degrees F to 325 degrees F


    Modine Insitu® is a spray-on coating, and can be applied either in the factory or in the field

    When time is critical, a field-applied spray coating may be the right solution. Modine Insitu® is a permanent, water-based, synthetic coating developed specifically for the protection of heat exchange units. It can be applied quickly at our facilities or on-site.

    While this technology does not match the complete immersion, factory-applied ElectroFin® E-Coat process, a spray-applied coating does provide a level of protection that is better than no coating at all. Applied by certified technicians, the coating is fast drying, with only a single application required.

    Modine Insitu® benefits

    • Luvata Insitu® process

    ES² technology

    Modine Insitu® contains ES² (embedded stainless steel pigment) technology, an anticorrosion coating specifically designed for the protection of coils mounted in corrosive areas. Coils will have a permanent, water-based synthetic coating with ES2 pigment applied to all coating surface areas without material bridging between fins.

    Licensed Insitu applicators

    Contact us to request a complete list of our licensed Insitu® coil and cabinet applicators.

    Both E-coat and Insitu coating processes are widely used by manufacturers of HVAC&R equipment and HVAC&R contractors all over the world.

    Technical performance

    Test Standard Qualification
    Salt Spray ASTM B117 Exceed 5,000 hrs
    Water immersion ASTM D870 3 months
    Pencil hardness ASTM D3363 HB-F
    Cross hatch adhesion ASTM D3359 5B
    Humidity ASTM D2247 500 hours
    UV resistance ASTM D4587 500 hours
    Mandrel bend (flexibility) ASTM D522 Passed 1/8 inch
    Mold resistance ASTM G21 Passed
    Sand & dust resistance MIL-STD 810F Passed