Heresite Protective Coatings Blog | Coil Corrosion & HVAC Phenolic Coatings Blog

Heresite Coatings Featured in green HVACR Magazine

Heresite, a leader in the development of thin film corrosion resistant coatings, has been featured in green HVACR Magazine. The article, Why You Should Use Coil Coating to Protect Your HVAC Equipment, includes 5 reasons to implement coil coatings, provides coating tips, and explains the difference between the ASTM B-117

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ASTM B-117 vs. ISO 20340/ISO 12944-9 – what’s the difference?

ASTM B-117 was the first nationally recognized salt spray standard. Published in 1939, this salt spray test is widespread and often recognized as the “gold standard” in corrosion testing. However, ISO 20340 offers a more realistic and updated method of testing, representing a significant improvement over ASTM B-117. When the

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Heresite’s P-413 Approved for NSF/ANSI 51 Rating

Heresite, a leader in the development of thin film corrosion resistant coatings, has now become the only company with a NSF/ANSI 51: Food Equipment Materials rated phenolic-epoxy for HVAC-R coils. The NSF rating establishes that Heresite’s P-413 coating has been shown to meet the requirements for materials and finishes used

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Fume exposure chemical testing may not be enough for your HVAC-R equipment

HVAC-R coating chemical resistance is often tested using fume exposure. While this method of testing can provide information on the anticipated level of protection for HVAC-R equipment, in certain applications, spot/direct exposure tests may provide better information about your equipment’s longevity in real-world conditions. It is important to conduct spot/direct

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Are you getting the HVAC-R coating you expect?

For over 80 years, Heresite coatings have been used to protect HVAC-R equipment in the harshest environments. We’re proud of our history, and we’re proud to continue to offer products like P-413, which recently met the demanding offshore marine requirements of ISO 20340.  These are tested, proven, real-world results. Unfortunately,

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Heat transfer test results for Heresite’s P-413

Heat transfer is an important consideration when selecting a protective coating for HVAC-R condensers or evaporators. A protective coating, when applied properly, can extend the life of HVAC-R coils by preventing corrosion with negligible impact on heat transfer. In 2017, we participated in a wind tunnel test for our P-413

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