Air Conditioning (A/C) and Heating Certification Practice Test 2025 – The Comprehensive All-in-One Guide to Exam Success!

Question: 1 / 400

What component is primarily responsible for compressing the refrigerant in an A/C system?

The evaporator

The compressor

The component that is primarily responsible for compressing the refrigerant in an A/C system is the compressor. In a typical air conditioning cycle, the compressor plays a crucial role by raising the pressure of the refrigerant gas, enabling it to flow through the system. When refrigerant enters the compressor in a gaseous state, it is compressed into a high-pressure, high-temperature gas. This process is essential because it prepares the refrigerant for the next stages of the cycle, allowing it to release heat in the condenser and then expand in the evaporator, ultimately cooling the air inside a building or vehicle.

The compressor works by utilizing electricity to power its motor, which engages internal components to create the compression. Understanding this function is vital for anyone involved in HVAC, as it is key to the efficiency and effectiveness of the air conditioning system as a whole.

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The condenser

The expansion valve

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