Conceptual on demand hot water recirculation system - Remodel

It may be surprising that just these three systems — mechanical, electrical and plumbing (MEP) — can make up as much as 15% of the total environmental footprint of a building's materials. Even more important is the operation of these systems, particularly mechanical and plumbing. In many cases, pipes and ducts are run willy-nilly after a home has been designed. The frequent result: high energy and water bills. These details are examples of how MEP systems must be integrated into a home's design and then installed according to the design for optimal performance.

This system is for a retrofit. It uses the existing cold line to return cooled hot water to the water heater. It accomplishes this with the simple jumper piping at the fixture. The setup for on-demand recirculation systems for new homes is quite different.

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Hot Water Circulation

DRAWING DETAIL

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