Aircon Parts Reference

The indoor unit is what you see and hear inside your room. It contains the evaporator coil that cools the air, the fan motor and blower wheel that push air through the room, and the PCB that controls everything. When something goes wrong indoors — weak airflow, no response to the remote, or ice forming on the coil — the fault usually traces to one of these components.

The outdoor unit handles the heavy lifting — compressing refrigerant, rejecting heat, and powering the cooling cycle. It sits exposed to Singapore's sun, rain, and salt air, which accelerates wear on components like the condenser coil, capacitor, and fan motor.

The refrigerant circuit connects your indoor and outdoor units through copper pipes, valves, and joints. Refrigerant flows through this closed loop, absorbing heat indoors and releasing it outdoors. When any part of this circuit develops a leak or blockage, cooling performance drops.

Your aircon produces condensation every time it runs — moisture from humid Singapore air collects on the evaporator coil and drains away through the drainage system. When drainage fails, water backs up and drips from the indoor unit.

Electrical and control components handle power delivery and communication between indoor and outdoor units. A loose terminal connection, a faulty isolator, or a damaged communication wire can shut down the entire system or trigger error codes.