A pressure washer's heating coil, found in hot water models, should be cleaned at least annually, and potentially more frequently depending on usage and water quality. Signs like reduced performance, hotter-than-usual water, or frequent nozzle clogging indicate a need for cleaning.
Here's a more detailed breakdown:
Annual Cleaning: A general recommendation for cleaning the heating coil is at least once a year.
More Frequent Cleaning:
If you experience any of the following, more frequent cleaning may be necessary: Reduced water flow or pressure. Water getting hotter than usual.
Spikes in pressure when the pressure washer is in bypass mode.
Frequent nozzle clogging.
Hard water causing lime buildup are all signs of a dirty coil:
A dirty coil can lead to:
Decreased water temperature. Longer time to reach operating temperature.
Increased strain on the motor and pump.
Reduced cleaning performance.
Soot buildup from improper fuel burning.
Cleaning Methods:
You can clean the coil using soft scrubbing solutions, acidic coil cleaners (diluted to manufacturer specifications), and proper PPE.
Benefits of Cleaning:
Regular cleaning prevents damage, improves energy efficiency, and ensures optimal cleaning performance