Residential HVAC Installation Practice Exam

Question: 1 / 400

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

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.

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D. Only affects outdoor unit

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