HouseChalk
Hot water recirculation
Hot water recirculation is a system that keeps hot water circulating in the pipes so it arrives instantly at fixtures without waiting.
Why it matters
It eliminates the cold-water wait at distant fixtures, saving water and improving comfort, but uses a small amount of energy to keep water warm.
Where people get this wrong
A dedicated return line is best but a comfort valve system can use the cold-water line as a return path if no return line exists.
Real-world example
Without recirculation, you wait 90 seconds for hot water at the master bath. With it, hot water is there in under 5 seconds.
Where this hits your build
This comes up during rough-in and final fixture installation. Accessibility for future repairs matters as much as the initial install.
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