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GeekX2 OP t1_jdjdbk3 wrote

Reply to comment by [deleted] in Recirculating pump for tankless water heater by GeekX2

The ones I've looked at require 240V which would be a bigger deal. And would only fix the problem in one fixture.

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fredsam25 t1_jdjosot wrote

If you get one with a small tank for the kitchen sink, it can run off 120v. It'll be a heck of a lot more efficient than constantly recirculating.

For the bath as well, if you add a ~2.5 gallon 120v water heater in line with with hot water line, it'll give you hot water long enough for the water from your main water heater to arrive.

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[deleted] t1_jdjh53t wrote

Personally, I would rather run the electric (assuming there's space in the breaker box) then deal with new plumbing.

I did misunderstand your post though. I thought that the kitchen was your main focus. Even if you are concerned about more than one fixture I would still strongly consider the point of use heaters. Or get rid of the tankless heater.

I probably wouldn't end up doing any of this. None of these options make good financial sense...but not everything we do in life needs to be the sensible thing.

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GeekX2 OP t1_jdjhv2g wrote

Keep in mind that I would have the same problem with a tank water heater. That is, it takes a long time to get water at the fixture.

Space in the box is a concern.

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[deleted] t1_jdjihse wrote

Right, but tankless+recirculation is a nonstarter in my mind. Your options are tankless and point of use on key fixtures or tank and recirc.

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