Chiller Epoxy Coating

Welcome to the  TRS, Inc.  and SparkleWash of Denver newsletter.

Chiller Epoxy Coating Typical heat exchangers & condensers with copper tubes inserted into carbon steel tube sheets
experience galvanic corrosion due to the dissimilar metals. In the presence of water, a corrosion cell is established causing rapid loss of carbon steel. This loss of steel will leave the copper tube ends protruding from the sheet. (See Before Picture) The result is turbulent flow patterns, sediment buildup, and eventual tube sheet perforation and refrigerant loss.

Before Epoxy Coating

After Epoxy Coating

The process of installing epoxy coatings has the following benefits:

  • Restore smooth surface for less turbulence and higher efficiencies
  • Restore corroded water flow division plates to eliminate condenser water bypass in dual pass condensers
  • Eliminate galvanic corrosion by coating steel to copper interfaces
  • Extend equipment life expectancy and minimize potential for refrigerant loss

A successful application will resolve the issues above and look like the After Epoxy Coating picture on the right.


For the best performance and long life, installation of a sacrificial anode after epoxy coatings is ideal. When coatings are applied any slight penetration or pinhole will result in concentration of corrosive force in that very small area. A zinc, or magnesium anode, will serve as double protection and is well worth the investment.

TRS, Inc.  has served the Colorado Front Range since 1993. We offer turnkey installation of protective epoxy coatings and sacrificial anodes. Please contact our office at 303-499-6722 for more information, literature, installation references or a quote for your specific equipment.