We have an older home that has been remodeled multiple times. An issue we are having is with our mud room sink (where are washing machine is as well) is it takes up to 3 minutes to get hot water out of the tap. I know there are recirculating pump solutions but curious if anyone has done this with a tankless (what we have)?

We have one of the recirculating pumps. Having never owned one in the past, they are freaking awesome. No waiting for the shower to warm up.

A tankless is one of those things I haven't jumped on yet simply because we have propane fired water heaters and they do a great job for us.

Our tankless has a built in recirculating pump...may want to check if yours does as well.

If the tankless doesn't have some sort of recirculation built in, you would have to get a little tank to recirculate out of.

If it is just one location, you can put in a 6 gallon water heater under the sink. It will give you hot water until, the water heater catches up.

Thanks for the responses guys...our tankless does not have a re-circ tank like the newer ones do. As far as location it's really 2 (mud room and kitchen - which are on the same side of the house).

Grundfos pump

This is what I've installed in the past for a couple customers. The plastic part is a thermostatic ca love that goes under the farthest sink from the water heater. The pump goes on top of the water heater. You'll need a plug at the water heater to run it. It has a timer so you can set it to run only early morning and evening when you are home vs all day to extend the pump life. So far they've worked well. The customer was waiting five minutes for water sometimes when it was really cold outside. Overcoming heat loss over the distance was an issue for them.

toolshed said:

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Grundfos pump

This is what I've installed in the past for a couple customers. The plastic part is a thermostatic ca love that goes under the farthest sink from the water heater. The pump goes on top of the water heater. You'll need a plug at the water heater to run it. It has a timer so you can set it to run only early morning and evening when you are home vs all day to extend the pump life. So far they've worked well. The customer was waiting five minutes for water sometimes when it was really cold outside. Overcoming heat loss over the distance was an issue for them.

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I have this one. Pretty happy with it, though it is not as fast as a true recirc system. Cut time to my kitchen from 3 minutes to 20 seconds or so.

Sounds like a little tank somewhere in the kitchen may be your easiest choice.

We have a tankless heater and a separate recirc pump with no recirc tank. The only downside I have noticed is that instead of waiting for hot water, we have to wait for cold water.

Section327Ag said:

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We have a tankless heater and a separate recirc pump with no recirc tank. The only downside I have noticed is that instead of waiting for hot water, we have to wait for cold water.

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This is my dream

dallasiteinsa02 said:

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If it is just one location, you can put in a 6 gallon water heater under the sink. It will give you hot water until, the water heater catches up.

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Don't bother with a tank, they make tankless point of use water heaters, for under the counter. $100-$200.