Residential HVAC Installation Practice Exam

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Prepare for the Residential HVAC Installation Exam with comprehensive study materials and multiple choice questions. Gain insights into heating, ventilation, and air conditioning to ace your test. Get started now!

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What material is recommended for connecting lines to the vacuum pump and gauge set for accurate testing?

Aluminum tubing
Steel pipe
Copper tube
Plastic piping

The correct answer is: Copper tube

Copper tube is recommended for connecting lines to the vacuum pump and gauge set for accurate testing because it is a highly conductive material that allows for more accurate readings. Aluminum tubing can be too flexible and can potentially leak air, while steel pipe may be too rigid and not provide accurate pressure readings. Plastic piping is not recommended as it can be easily damaged and may not hold up to the pressure of the vacuum pump and gauge set.