How to Make a Hot Water Recirculation Loop


Hot water circulation loops help keep the water in you home's hot water line in constant motion, ensuring every faucet in your home quickly produces hot water. Unless your home comes built with a specific loop in place, a special recirculation pump needs to be installed. This will pump water from the hot water line through the cold water line and back to the water heater, creating an ad hoc recirculation loop.

  • Locate the water faucet that is farthest away from your home's water heater. Installing the loop pump farther away from the water heater will cover more plumbing and deliver hot water to more faucets faster.

  • Attach the hot and cold water lines from the wall to the proper inlets and outlets on the loop pump.

  • Attach the hot and cold attachments from the faucet to the proper inlets and outlets on the loop pump.

  • Ensure all connections have new and properly sized washer rings to create a proper seal and prevent leaks. Secure all connections while being careful not to overtighten them.

  • Plug in the loop pump to an electrical outlet and turn on the system. Wait several minutes to allow hot water to circulate through the system. Test a nearby faucet to ensure that hot water is instantly available. If any faucets do not receive hot water fast enough consider changing the location of the loop pump.

Tips & Warnings

  • Make sure the outlet powering the loop pump is properly grounded and rated to operate equipment near a water source.

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  • Photo Credit modern faucet and sink detail with running water image by nextrecord from
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