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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After 2.5 year exposure test, Heresite’s P-413 panels show no signs of wear

in Blog, Chemical Resistance Testing, Coatings, Uncategorized

To further expand on Heresite’s expansive chemical resistance guide, P-413 coated steel, copper, and aluminum panels were placed in a municipal wastewater treatment facility to simulate sewage fumes. Panels were placed at the point where raw sewage is pumped into the facility and screened; this results in significant hydrogen sulfide exposure, one of the harshest […]

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

in Blog, Chemical Resistance Testing, Coatings, Uncategorized

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 ASTM B-117 test is conducted, […]

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Heresite Develops Hydrophilic Topcoat in Response to Customer Requests

in Coatings, News

Heresite, a leader in the development of thin film corrosion resistant coatings, has launched HL-300, a robust hydrophilic coating for HVAC-R condensing equipment. The topcoat is designed to improve condensate management for reduced water carryover to allow for higher fan speeds on HVAC-R equipment. “Our customers came to Heresite for a more durable solution to […]

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

in Chemical Resistance Testing, Coatings

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 exposure chemical resistance tests because […]

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Are you getting the HVAC-R coating you expect?

in Blog, Coatings

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, being an early innovator and […]

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