We know this business because we created this business. Heresite was the first to offer HVAC/R corrosion-resistant coatings that provided unsurpassed protection without impacting heat transfer loss. Performance through innovation has been the focus of Heresite since our beginning in 1935. Today we are the acknowledged global leader in corrosion-resistant solutions for HVAC/R equipment. Whether in commercial or industrial environments, Heresite coatings outperform the competition, improving your systems ROI.