Hot water heater

I am going from a tank to a tankless water heater.

Can I cap off the 3rd copper pipe coming out of center of existing tank.

The Tankless unit has only a hot and a cold, nothing for recirculating.

Will it cause problems to cap the 3rd pipe?

Home Improvement Asked by Jeremy Blair on January 2, 2021

1 Answers

One Answer

The 3rd or recirculating pipe on a hot water system makes the water hot when you open the tap rather than waiting. Cap it off and find the pump and turn it off.

You may want to re install it at a later time there are multiple ways to do this to maintain instant hot water at the tap but that will be a separate question and answer. I would cap it off and if possible isolate the pump and turn off the power to the pump.

Answered by Ed Beal on January 2, 2021

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