The compressor's main function is to

• A. Remove moisture
• B. Absorb heat from the room
• C. Create pressure difference
• D. Filter refrigerant

Answer: (C)

The compressor’s job is to create and maintain a pressure difference in the refrigerant by compressing low‑pressure vapor into high‑pressure, high‑temperature vapor. That pressure boost drives the refrigerant through the system, sending it to the condenser to release heat outdoors and continue the cycle. This movement and pressure change is what makes the cooling process possible.

Moisture removal happens when air is cooled at the evaporator and humidity condenses on the coil, not due to the compressor. Absorbing heat from the room occurs at the evaporator as it takes in heat from indoor air. Filtering refrigerant is handled by other components like filters and dryers, not the compressor itself.