What you need to know about ISO Corrosivity Categories

in Blog

Corrosion testing on HVAC coatings can be conducted according to a number of standards, including ASTM-B117, ISO 9227, ISO 12944-6, and ISO 20340. Of these tests, the one we believe represents actual service environments most closely is ISO 12944-9 (formerly ISO 20340) vs. the more common ASTM B-117. ISO classifies environments in corrosivity categories of […]

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Heresite’s ES-600 meets ISO 12944-9 (formerly ISO 20340) Standard

in Blog, Coatings

ES-600 offers high performance and spray application Manitowoc, Wis. – Heresite’s ES-600, a high-performance epoxy-silane specially designed to provide superior performance in demanding environments, has successfully me the ISO 12944-9 Cyclic Offshore Test protocol. The ISO 12944-9 (formerly ISO 20340 test) for C5-X environments cycles the coating between salt spray, UV radiation, and temperature shocks […]

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Air quality, UV light for HVAC systems, and corrosion protection

in Blog, Chemical Resistance Testing, Coatings

Many facility engineers are interested in the possibilities of using UV-C light to help prevent the spread of COVID-19. UV-C light has been shown to be a proven method controlling airborne infection. It works by destroying the outer protein coating of the SARS-Coronavirus. Right now, the effectiveness of UV-C on the novel SARS-CoV-2 (COVID-19) virus […]

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Choosing the right Heresite coating

in Blog, Coatings

Learn more about Choosing An HVAC-R Coating for Marine Environments » Learn more about Corrosion Protection Testing » Choosing the best HVAC-R protective coating for your particular environment and application is an important decision. At Heresite, our HVAC-R coating products are continually evolving to provide you with the best possible solution for your environment. Be sure you […]

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What is salt spray testing and how does the process work?

in Blog, Coatings

Salt spray testing is a laboratory simulation of a corrosive saline environment. It is used as an accelerated means of testing the ability of surface coatings to withstand atmospheric corrosion. Also known as salt fog testing, it is one of the oldest testing methods used in the HVAC-R coatings industry, and for this reason, is […]

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What is Heresite?

in Blog, Coatings

Much like your favorite brand of facial tissues or fruit-flavored gelatin, the word Heresite has come to represent a type of HVAC-R coating no matter who it’s manufactured by. However, Heresite isn’t a specific coating – it’s a coating manufacturer! The confusion makes sense. Heresite was founded in 1935. That means that we’ve been making […]

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How to find a C5 or CX (extreme marine) rated coating

in Blog, Coatings

Learn more about Choosing An HVAC-R Coating for Marine Environments » Selecting the correct corrosion standard is an important part of specifying HVAC coil coatings, particularly in environments where an extreme coastal HVAC coating is needed. For over 100 years, ASTM B-117 had been widely recognized as the “gold standard” in corrosion testing – at […]

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Studies show ASTM-B117 salt spray test does not correlate to real-world environments

in Blog, Chemical Resistance Testing

In 1995, The Society for Protective Coatings (SSPC) published a paper that concluded, “It is obvious that ASTM-B117 Salt Spray (Fog) Testing and similar methods offered a rapid but unreliable means for predicting coating behavior.”  For the 20+ years since that paper was published, the ASTM B-117 salt spray procedure has continued to be tested […]

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Why copper pipe protective coating is important

in Blog, Coatings

Coating the coils of an HVAC unit is a known to extend the unit’s life. However, the performance of an HVAC unit is about more than just the coil. HVAC units are constructed from a variety of metals. These dissimilar metals react to environmental conditions in a variety of ways. Depending on the metal used […]

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Three Questions to Ask When Coating Oversized HVAC-R Units or Coils

in Blog, Coatings

Coating extremely large HVAC-R units or coils can be difficult. Their size (both dimensions and weight) makes the units/coils difficult to move and many coating applicators find it difficult to thoroughly apply coatings to protect them from corrosive elements. A large HVAC-R unit/coil is clearly a big investment, which makes the need to apply protective […]

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