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Intro to HVAC Questions and Answers | Latest Version | 2025/2026 | Correct & Verified What tool is used to measure air temperature? Thermometer. What tool measures air pressure in duct systems? Manometer. What is static pressure in HVAC systems? Resistance to airflow in ducts. What does a return air duct do? Brings air back to the HVAC unit. What does a supply air duct do? Delivers conditioned air to rooms. What is zoning in HVAC systems? Dividing a building into sepa...

Intro to hvac questions and answers already passed Which of these heating methods is most commonly used as a heat source in cold climates? Natural gas furnaces Which of the following is a device used to maintain indoor air quality? Ultraviolet light The purpose of an evaporator in a refrigeration cycle is to transfer heat from the air to the refrigerant Heat can be transferred from a refrigerant to the outdoors on a hot day because the refrigerant is warmer than the out door ai...