How to Install an Under the Sink Hot Water Circulator Pump That Plugs In

Remove all items from underneath the plumbing fixture so you have room to work.

Turn the water valves below the fixture clockwise to shut them off. Then turn on the faucets and allow any remaining water to flow out.

Disconnect the connectors on the two faucet supply lines with an adjustable wrench. Drain each line into the bucket to catch any remaining water.

Replace each disconnected faucet supply line with a faucet adapter. Tighten one faucet adapter to each faucet end with an adjustable wrench.

Connect the two included flex lines, provided with the hot water circulator pump, to the two sink faucet adapters with an adjustable wrench.

Place the hot water circulator pump under the fixture. Turn the front of the unit toward you.

Connect the free end of the hot supply flex line to the unit's hot supply connector with an adjustable wrench. Connect the free end of the cold supply flex line to the unit's cold supply connector. Tighten connections until snug, but don't exceed half a turn when the connection first feels snug.

Connect the free ends of the disconnected water supply lines to the corresponding hot and cold input connectors on the hot water circulator pump. The pump will now take water directly from the plumbing lines, warm it up and send it up through the flex lines and into the faucet.

Turn on the hot and cold water faucets. Then turn the hot and cold water valves to the "On" position. Allow the water to run until all air within the lines is removed.

Inspect the connections for leaks. If leaks are found, tighten the connections with an adjustable wrench.

Plug the unit's power cord into a 115 volt AC outlet. Turn the unit on, and the pump will circulate the cold water out of the hot water lines.