Founded in 1935, Heresite develops corrosion resistant protective coatings for HVAC-R condenser and evaporator coils, radiators, and heat transfer equipment operating in demanding environments. Heresite coating technologies include air-cured, chemical-cured, baked epoxy, and phenolic coating systems. Through our partnership with WEG, Heresite now supports both HVAC-R and Industrial Protection applications, providing long-term corrosion protection for non-HVAC metal structures and equipment.
Heresite protective coating products include:
Industrial Protection coatings include self-priming systems, primers, and high-performance topcoats engineered for corrosion protection, environmental resistance, and long-term durability in severe service environments. These systems are used on equipment and structures such as:
Heresite coatings have been resistance tested against hundreds of chemicals and evaluated in harsh marine and salt air environments. Depending on the application, specific coating systems have been tested for:
Baked phenolic and epoxy modified baked phenolic coatings protect against corrosive chemicals and extreme environmental exposure. In heat transfer equipment, baked phenolic epoxy coatings control corrosion with minimal reduction in heat transfer efficiency. In Industrial Protection applications, these technologies help maintain corrosion resistance, adhesion, and appearance under chemical exposure, moisture or immersion, UV exposure, and mechanical wear.
Heresite P-413 was the first HVAC-R coil and radiator coating to meet ISO 12944-9 (formerly ISO 20340) and is the only phenolic-epoxy coating for HVAC-R coils approved for NSF/ANSI 51.
Heresite protective coatings can be applied to oversize HVAC coils and units up to 55 feet long x 11 ½ feet tall x 10 ½ feet wide at our facility. Overhead cranes can lift up to 60,000 pounds, supporting large-scale coating applications across HVAC-R and Industrial Protection projects.
Heresite HVAC protective coating products have been shown to extend the life of HVAC-R and other heat transfer equipment. They provide superior corrosion resistance in the harshest environments, including C4, C5, CX and extreme marine environments.
Heresite baked phenolic coatings are designed for a wide range of pH environments, including highly acidic environments. They are used for protection in a variety of industries, including coating container linings, tank linings, fans, blowers, duct work, exhaust hoods, pipes, and pumps.
Modified Baked Phenolics
Heresite’s Industrial Protection portfolio includes self-priming systems, primers, and high-performance topcoats engineered for corrosion protection in non-HVAC industrial applications. These coatings are used on metal structures and equipment exposed to harsh environments, including marine, chemical, and industrial conditions.
Designed to reduce application steps and increase productivity in demanding environments.
Wet surface epoxy polyamine for confined, submerged, and low UV exposure environments
High productivity polyaspartic self-priming coating for fast return to service
Self-priming polyurethane for exterior metal structures requiring UV resistance and controlled appearance
Engineered to provide corrosion resistance and system compatibility in severe industrial conditions.
Zinc rich epoxy primer delivering cathodic protection for carbon steel structures
High performance finishes designed to protect against UV exposure, weathering, and chemical attacks.
Polysiloxane coating for external protection and long-term color and gloss retention
High gloss polyurethane topcoat for aggressive industrial and chemical environments
