Can a Condenser Coil Be Coated After Manufacturing?
Key facts
| Coil state | Method | Cure |
|---|---|---|
| Loose coil, new | Dip (preferred) or spray | Oven or ambient |
| Built into a unit, not installed | Spray after masking, or remove and dip | Ambient, or oven for removed coil |
| Installed on site | Field spray | Ambient |
Loose coils
This is the easiest case. The coil is degreased, rinsed and dried, dipped or sprayed, and cured in an oven. Coverage is complete and the film is controlled.
Coils inside units
A condenser built into an outdoor unit sits next to controls, sensors and a compressor. Either the unit is masked and the coil sprayed with an air-dry system, or the coil is removed, dipped and baked, then refitted and pressure-checked.
Installed coils
Installed coils can be field sprayed, but cleaning is harder and coverage inside the coil is limited. Coils that have already corroded must be cleaned thoroughly first.
What this means for your project
If the coils or units are still at the factory, coating them before shipment gives the best result. Tell us whether they are loose or built in when you ask for a quote.
