Overhaul chemical cleaning for air conditioners is a deep-cleaning process that goes beyond regular maintenance. It involves dismantling key components of the unit (such as the evaporator coil, blower wheel, and fan) and thoroughly cleaning them using specialized chemical solutions. This helps remove accumulated dirt, grime, mold, and bacteria, which can reduce cooling efficiency and air quality over time.

The process typically includes:
- Dismantling the indoor unit.
- Applying chemical solutions to clean the evaporator coil, condenser coil, and other parts.
- Washing the air filters and blower.
- Flushing the drainage system.
- Reassembling the unit and checking for proper operation.

Overhaul chemical cleaning is ideal for heavily clogged or underperforming units and helps restore optimal performance.