DHW recrc with in direct

Sweet_2

a recirc system on domestic hot water adds to or takes away from eff. of indirect?

Brian_19

insulate

A recirculation system works great. The most important
thing is to insulate the hot water and return lines. I also use pump with a built in timer and aquastat. This insures the pump is not running all the time. I think this combination does not take away from eff.
On large homes I think it is more eff. not to have to let the water run for 30 seconds to get hot.

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