[gmdds]

Here’s a fairly simple solution for well less than $1K.

I’ve installed these on a couple of houses we’ve owned. No water loss/dumping. When ready to take a shower, just hit the button (I’ve hidden right inside the cabinet). The quiet pump turns on, and the crossover keeps from wasting water…then when water is up to the set temp, it shuts off. If typically takes 20-40 seconds. That brings the hot water to that pump. I’ve installed it right below the sink in the master bath, which is the furthest from the garage HWH. Then when you turn on the shower, it’s hot & ready to go.

The problem with timer units, on top of the HWH, is that you don’t always take showers the same time, when the timer is activated. With this unit you just hit the button.