Heresite Protective Coatings 101: An Introduction.

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Just like items inside your home (think carpets or furniture) need protection from everyday use and wear and tear, your outside HVAC system benefits from high-quality protective coatings.

NACE International (now part of AMPP) did a global study on corrosion and found that it costs the world around $2.5 trillion every year. That’s about 3.4% of the global GDP spent on corrosion-related damage, repairs, and prevention. The good news? Using the right corrosion control strategies could cut those costs by 15–35%, a perfect example of how important it is for industries to stay on top of corrosion prevention.

Coatings for HVAC equipment work by creating a barrier between metal components and harmful environmental elements to help strengthen the system’s durability and efficiency. For over 90 years, Heresite has offered corrosion protection in any environment for a broad range of industries, including industrial, mechanical, aquatic, food service, and residential HVAC systems.

The benefits of Heresite coatings are many. Here’s what we think are the most important to consider.

  • Environmental Protection. Coatings help to shield against moisture, salt, chemicals, and pollutants that destroy components. They are ideal for areas with high humidity, coastal salt air, toxins, or industrial fumes.
  • Corrosion Resistance. HVAC components, like coils and metal surfaces, are susceptible to rust and deterioration. Heresite protective coatings safeguard metal parts against destructive elements, preventing damage and system failures.
  • Extended Lifespan. Heating and cooling equipment wears out faster without proper shielding, leading to frequent repairs or even early-on replacements. Coatings provide an added layer of defense, helping HVAC units last longer and reducing maintenance costs.


Protect your HVAC equipment with Heresite coatings and gain long-term durability and peace of mind. Our specialized formulas are engineered to withstand even the toughest environments, ensuring lasting performance.  For decades, Heresite Protective Coatings has set the standard in HVAC protection, delivering unmatched solutions recognized worldwide.

Learn more by calling us at 920-684-6646 or contact us with your protective coating questions!

Be sure to check out our blog post next month, where we will explore the specifics of how Heresite Protective Coatings extend the lifespan of your HVAC systems.

Heresite – there is NO EQUAL™.