Residential HVAC Installation Practice Exam

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Prepare for the Residential HVAC Installation Exam with this comprehensive quiz. Test your knowledge with multiple-choice questions and get ready to excel in your HVAC installation career.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What impact does altering the length of a line set have on the charge in a split air-conditioning system?

A. No impact
B. Always needs recharging
C. Rarely requires adjustment
D. Only affects outdoor unit

The correct answer is: C. Rarely requires adjustment

Altering the length of a line set in a split air-conditioning system rarely requires adjustment to the charge. The line set is the pair of copper lines that connect the indoor and outdoor units of the system. When the length of the line set is changed, the amount of refrigerant needed may vary slightly, but in many cases, adjustments to the charge are not necessary. Option A is incorrect because changes in the line set length can impact the charge, so there is an impact, although it is not significant in most cases. Option B is incorrect because it states that the system always needs recharging, which is not accurate. Option D is also incorrect because changing the line set length can affect both the indoor and outdoor units, not just the outdoor unit.