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How to Clean Your Chiller Condenser Coils (DIY Guide)Updated 15 days ago

For Aquavoss Cold Plunge Units

Keeping your chiller clean is one of the easiest ways to maintain strong cooling performance and extend the life of your unit. Over time, dust and debris can build up on the condenser coils, restricting airflow and reducing efficiency.

If you currently have your chiller removed from the tub, this is the perfect time to clean it.

What You’ll Need

  • Shop vacuum with a soft brush attachment (recommended)
  • Clean, dry cloth

Before You Start (Safety First)

  • Make sure the unit is completely powered off and unplugged
  • Perform this cleaning in a dry area
  • Avoid using water directly on the coils

How the Airflow Works

Your chiller pulls air:

  • In through the rear
  • Out through the front

This means dust and debris collect on the outside surface of the condenser coil fins - this is the area you’ll be cleaning.

Step-by-Step Cleaning Instructions

1. Inspect the Coils

Take a look through the rear intake area.
You’ll likely see dust, lint, or debris sitting on the thin metal fins.

  • Attach a soft brush head to your shop vac
  • Gently place the brush against the coil surface
  • Lightly vacuum across the fins

Important:
Be gentle - the aluminum fins are thin and can bend easily.

3. Work in One Direction

  • Move the brush in straight, consistent passes
  • Avoid scrubbing or applying pressure

4. Final Check

  • Ensure coils are visibly clean
  • Check that no fins are bent or damaged
  • Wipe down surrounding areas if needed

What to Avoid

  • ❌ No water or hose spray
  • ❌ No harsh chemicals
  • ❌ No stiff brushes or metal tools
  • ❌ No high-pressure air (can damage fins)

How Often Should You Clean It?

  • Light use / clean environment: Every 12 months
  • Dusty or outdoor environments: Every 6 - 12 months

Why This Matters

Clean coils allow proper airflow, which helps:

  • Maintain accurate water temperatures
  • Reduce strain on the compressor
  • Improve energy efficiency
  • Extend the lifespan of your chiller

Pro Tip

If your unit seems to be:

  • Struggling to reach temperature
  • Running longer than usual
  • Blowing unusually warm air

…it’s often a sign the coils need cleaning.

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