Quote:
Originally Posted by Robbie0723
Using a recirculation pump with a tankless water heater may void the warranty
It may not work with such a low water flow. Check to see if the hot water heater activates when the pump is running.
There are tankless with built in recirculation but I think those need separate return lines.
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At our current home our tankless water heater has its own recirculation pump. No need to add anything into the system. You do need the return line though. When we have our home built in TV we're going to see if they can install the return line and install the same model of tankless heater we now have.