We like the new tankless hot water heater. We keep the water @120 deg. This works good for the kids. But when I shower I like it hotter. We have a steam setting on the shower head. This really warms up the shower. It is a pain to go into the garage and change the temp. Then we have to remember to change it back.
My tank has a Takagi Temperature Remote Controller I just ordered. This will go in the master bath room we can turn up the hot water for the shower the back down.
This will also display additional error codes if it ever has issues (I hope I do not need that feature)
It would be nice if it was wireless but it is wired so I will have to fish one more wire.
They had free shipping and $25 off if you use V.me Visa.