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HVAC S.T.A.R Questions and Answers | Latest Version | 2025/2026 | Correct & Verified What is latent heat in HVAC systems? Energy absorbed or released during a change in moisture content. What is sensible heat? Energy that changes temperature without changing moisture content. Why is a pressure-temperature chart used? To determine refrigerant conditions and system performance. What is a variable-speed blower motor used for? To adjust airflow according to load for comfort and e...

HVAC S.T.A.R QUESTIONS AND ANSWERS ALREADY PASSED The evaporator in a refrigeration system: Is the component where refrigerant boils and absorbs heat. The purpose of the compressor is to change ___________. Low-pressure, low-temperature vapor to a high-pressure, high temperature vapor A common refrigerant leak detection device is the: Halide torch. Copper-plating of compressor parts is: Caused by contaminants in the system. If not properly installed, a hot-gas muffler might tra...

The evaporator in a refrigeration system: - Answer-Is the component where refrigerant boils and absorbs heat. The purpose of the compressor is to change ___________. - Answer-Low-pressure, low-temperature vapor to a high-pressure, high temperature vapor A common refrigerant leak detection device is the: - Answer-Halide torch. Copper-plating of compressor parts is: - Answer-Caused by contaminants in the system. If not properly installed, a hot-gas muffler might trap: - Answer-Oil. Unit ven...