Technical Data and Questions > Why Protect HVAC/R Equipment Against Corrosion

Why Protect HVAC/R Equipment Against Corrosion

Corrosion protection for HVAC/R equipment is sometimes viewed by equipment owners as a questionable expense, or nothing more than a mere aesthetic problem. In coastal, industrial and assorted other environments; corrosion is an expensive reality. Corrosion as a whole costs companies billions of dollars annually in higher maintenance and repair costs, premature replacement expenses, and in lost efficiency. Corrosion directly increases the costs of operation.

In salt-laden environments, U.S. Navy tests indicate that corrosive deterioration of aluminum fin stock begins in the first 30 days. This is evidenced by the appearance of grayish aluminum salts on the surface of fin stock. This residue is the initiation of aluminum oxidation and the beginning of fin embrittlement. As aluminum oxidation progresses, heat transfer capability of the fin stock deteriorates, increasing operating costs.

Within the first two years, tests reveal that HVAC/R system can experience as much as 55% loss in operating efficiency. In addition to higher operating costs, the compressor(s) is overworked, which means corrosion leads to excessive operation and possible compressor failure.

Another important factor in enhancing the longevity of expensive HVAC/R equipment is the need for a proper preventative maintenance program. A regular and ongoing maintenance program should be in effect for both coated and un-coated equipment whether in a corrosive environment or not. Available to customers at no charge is a copy of Bronz-Glow's "Owners Coated Coil Cleaning & Maintenance Guide."

Cost is a factor in any business decision, however the upfront expenditure to provide a protective coating for equipment in a corrosive environment should be considered an investment, not an expense. The payback of the investment comes from longer-lasting equipment delivering designed energy efficiencies with fewer repair bills. In addition, you substantially reduce inconvenience and costs associated with downtime.