A musty or moldy odor comes from the Amana air conditioner when it starts or runs.

Safety first: Turn off and unplug the unit. Wear gloves and a mask when cleaning moldy areas.

Steps to remove musty odors:

• Clean filter: Wash or replace the air filter.
• Clean evaporator coil: Access the indoor coil and apply a foaming coil cleaner designed for evaporators. Allow it to work and rinse if required by the product instructions.
• Disinfect drain pan: Wipe the condensate pan with a solution of water and mild disinfectant. Ensure the drain is clear so water does not stagnate.
• Run fan-only mode: After cleaning, run the fan-only mode for 30–60 minutes to help dry the coil and pan.

Avoid using harsh chemicals or bleach directly on coils unless the product is specifically rated for HVAC use.