Water Supply & DistributionQuestion 23 of 360
A hot water recirculation loop is added so users get hot water quickly at a remote fixture. What is the main plumbing purpose of the recirculation return line?
a.To increase static pressure at the fixture
b.To act as a backflow preventer
c.To keep hot water moving so it stays hot near the fixtures, reducing wait and wasted water
d.To replace the need for pipe insulation
Explanation
A recirculation loop continuously moves hot water so it remains hot near distant fixtures, reducing the wait for hot water and wasted water. It does not raise static pressure, is not a backflow preventer, and insulation is still recommended to reduce heat loss in the loop.
Law Reference: 2022 California Plumbing Code (CPC) §610.0Practice all 360 questions free — no signup required.
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