HVAC Tools and Equipment Flashcards
6 cards from real HVAC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 HVAC Tools and Equipment flashcards as text
Which tool is used to measure the refrigerant pressure on both the high and low sides of an HVAC system simultaneously?
Answer: Manifold gauge set
A manifold gauge set connects to both the high-pressure and low-pressure service ports to read system pressures at the same time.
What instrument is used to measure airflow velocity in HVAC ductwork?
Answer: Anemometer
An anemometer measures air velocity, which is then used with duct cross-sectional area to calculate airflow in CFM.
A micron gauge (vacuum gauge) is primarily used during which HVAC service procedure?
Answer: Evacuating the system to remove moisture and non-condensables
A micron gauge measures deep vacuum levels (in microns of mercury) to confirm the system has been properly evacuated before refrigerant charging.
Which tool is used to flare the end of copper refrigerant tubing to create a leak-free mechanical connection?
Answer: Flaring tool
A flaring tool clamps the tubing and uses a cone-shaped mandrel to form a 45-degree flare at the tube end for flare fittings.
What is the primary purpose of a refrigerant recovery machine?
Answer: To remove and store refrigerant from a system before service
A recovery machine extracts refrigerant from an HVAC system and stores it in a recovery cylinder, as required by EPA Section 608 regulations.
Which instrument measures the wet-bulb and dry-bulb temperatures used to determine relative humidity and enthalpy?
Answer: Sling psychrometer
A sling psychrometer uses two thermometers—one dry-bulb and one wet-bulb—to determine relative humidity by comparing their temperature readings.