Condenser Coil Corrosion: Causes and Prevention

Condenser coils sit outdoors, exposed to rain, salt, dust and pollution. Corrosion is their most common enemy — and largely preventable.

Here's what causes it and how to stop it.

What drives corrosion

Salt-laden coastal air, industrial pollutants and constant moisture attack fins and tubes. Dissimilar-metal contact can accelerate it. The result is lost capacity and leaks.

Protective coatings

Epoxy and specialised fin coatings shield coils from corrosive air, greatly extending life. AGH offers coated-fin options on condenser coils.

All-copper construction

For the harshest sites, all-copper coils resist corrosion inherently and avoid galvanic issues.

Maintenance helps

Rinsing coils to remove salt and debris slows corrosion. Combine with the right materials for best results — see our maintenance guide.