After I was researching on-demand scorching water choices to changed our failed oil boiler two years in the past, one function that they had was a “push for decent water” button that you might put close to distant taps. It might hearth up the on-demand scorching water heater, and begin the recirculating pump for a short while to attract scorching water to all the taps. One producer provided mixing valves to in some way recirculate the “chilly” scorching water again by way of the chilly water line, as an alternative of needing a 3rd pipe for return water.
I’ll in all probability simply go together with per-fixture on demand electrical scorching water heaters once we construct the Storage Mahal, though a central on-demand with recirculator and pushbutton remains to be an choice on the desk.
Proper earlier than the oil boiler crapped out, we had all the scorching/chilly water strains in our home changed with a star-wired central manifold with particular person PEX runs to every fixture. The manifold has an choice for decent water recirculation, however the PEX runs out to the taps aren’t a part of the loop on this structure…..