HVAC Maintenance Technician Interview Questions and Answers

The main part of the refrigeration cycle is the compressor.

• The compressor is responsible for pressurizing the refrigerant gas, increasing its temperature and energy.

• It then sends the high-pressure, high-temperature gas to the condenser coil to release heat and cool down.

• Examples of compressors include reciprocating, rotary, and scroll compressors.

An expansion valve is a device in a refrigeration system that controls the flow of refrigerant into the evaporator.

• Regulates the flow of refrigerant into the evaporator to maintain proper temperature and pressure

• Helps to control the cooling capacity of the system

• Can be thermostatic or electronic

• Examples include thermostatic expansion valves (TXV) and electronic expansion valves (EXV)

Refrigeration cycle is a process in which refrigerant absorbs heat from the indoor air and releases it outside to cool the indoor space.

• Refrigerant absorbs heat from indoor air in the evaporator coil

• Refrigerant is compressed in the compressor to increase its temperature and pressure

• Refrigerant releases heat outside in the condenser coil

• Refrigerant expands in the expansion valve to lower its temperature and pressure

The compressor is a vital component in an HVAC system responsible for pressurizing refrigerant to cool or heat the air.

• Compresses refrigerant gas to increase its temperature and pressure

• Sends the high-pressure gas to the condenser to release heat

• Helps in circulating refrigerant throughout the system

• Types of compressors include reciprocating, scroll, rotary, and centrifugal