[phil21]

Recirculating works fine with these, if I chose to do it. They both have a tiny hyper-heated insulated tank for the purpose so they can trickle a hot water loop to the furthest destination. They also have a recirc mode which would barely show up on your monthly energy bill.

If I was building new construction I’d do it, but the upgrade just isn’t worth it for me at the moment since it would require drywall repair and running another return line for relatively minimal benefit.

Note as others have pointed out: this setup is not to save money, it’s entirely quality of life as the primary metric under consideration.