Always ensure new evaporators have corrosion protection before installation.
Many manufacturers offer pre-coated coils or optional protective coatings. Common types include:
Epoxy coatings: Thin, durable layer that resists moisture and chemicals.
Polyurethane coatings: Excellent for marine or coastal environments with salt exposure.
Phenolic coatings: Provide good protection against acid and salt corrosion.
Electro-fin or Heresite coatings: High-performance coatings for harsh environments.
Or have the installer apply protection.
Common Types of Corrosion to Watch For
Formicary Corrosion: Tiny pinholes in copper caused by organic acids; not visible to the naked eye.
Galvanic Corrosion: Happens when dissimilar metals contact each other in the presence of moisture.
Pitting Corrosion: Localized, intense corrosion forming pits or holes, often due to chemical exposure.
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