What Happens During a Chemical Wash for Aircon?

Author: Aircool Aircon89

Aircon chemical wash

An AC unit requires regular maintenance to function efficiently, and one of the most thorough cleaning methods available is a chemical wash. This process goes beyond the basic cleaning of filters and involves the use of specialized chemical solutions to deeply clean internal components. A chemical wash is recommended when simple servicing does not resolve performance issues such as poor cooling, strange odors, or water leakage. Here's a breakdown of what happens during a chemical wash for an AC:

1. Power Off and Disassembly

The first step in a chemical wash is to turn off the power supply to ensure safety. Once the unit is safely shut down, the technician carefully dismantles major parts of the AC, including the front cover, filters, fan coil unit, drainage tray, and sometimes even the blower and circuit board. This allows better access to components that are otherwise difficult to clean during routine maintenance.

2. Inspection and Diagnosis

Before applying any chemical solution, technicians usually inspect the parts for signs of wear, damage, mold, or blockage. Common issues identified during this phase include:

  • Mold and mildew buildup on the evaporator coils.

  • Blocked drainage pipes are causing water leakage.

  • Dust and grease buildup on the fan and motor.

    This step ensures that the chemical wash is not just a cleaning task, but also a preventive maintenance check.

3. Application of Chemical Solutions

Once the parts are exposed, the technician applies a specially formulated chemical cleaning solution to critical components such as:

  • Evaporator coils: These coils are prone to dust and mold accumulation, which reduces heat exchange efficiency. The chemicals dissolve grime and bacteria.

  • Fan blades and blower wheel: These are cleaned to remove sticky residue and ensure smooth airflow.

  • Drainage system: The chemical is flushed through the drain pipe to clear blockages and kill any bacterial growth that can cause foul odors.

These chemical solutions are strong enough to break down stubborn dirt, oil, and biological growth, but safe when used by trained professionals.

4. Rinsing and Cleaning

After allowing the chemicals to work for several minutes, the technician thoroughly rinses all components with clean water. This is often done using a low-pressure water sprayer. The rinsing step is essential to:

  • Remove chemical residues.

  • Wash away dislodged dirt and mold.

  • Prevent corrosion or damage to parts due to prolonged chemical exposure.

The technician ensures that no water enters the electrical components during this step. View more

5. Drying and Reassembly

After rinsing, all parts are allowed to dry completely. This may involve using dry cloths or leaving the components to air dry. Once everything is dry, the AC unit is carefully reassembled. The technician also checks for loose screws or misalignments to ensure that the unit is securely and correctly put back together.

6. Final Testing and Quality Check

The final step is to power on the unit and perform a comprehensive function check. The technician monitors:

  • Cooling performance.

  • Noise levels.

  • Airflow and temperature consistency.

  • Water drainage.

  • Absence of unusual smells.

If the unit is not performing optimally, further minor adjustments or repairs may be recommended.

Benefits of a Chemical Wash

A chemical wash offers several advantages:

  • Restores cooling efficiency.

  • Removes bacteria and mold, improving indoor air quality.

  • Prevents water leakage and unpleasant odors.

  • Extends the lifespan of the unit.

  • Reduces energy consumption by improving airflow and heat exchange.

When Should You Get a Chemical Wash?

Experts recommend a chemical wash every 1–2 years, especially if:

  • Your AC is used frequently.

  • There's reduced cooling performance.

  • You notice moldy smells or water leakage.

  • Routine servicing doesn’t improve function.

A chemical wash is an intensive cleaning process that rejuvenates your aircon unit, ensures better performance, and promotes a healthier indoor environment. Always engage certified professionals for this task to ensure safety and effectiveness.

Contact Information

Call: +65 90050975 (or) WhatsApp us: https://wa.me/6590050975

11 Mandai Estate, #03-09 Eldix

Singapore 729908

Mail ID: Airconaircool@gmail.com

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