It takes a few minutes for my tankless water heater to warm up, so we end up wasting a lot of water in our shower. Is there a way to avoid this? A friend mentioned a “comfort valve” or something? What is it and how does it work? Or is there another solution? Thx!
What part? Most houses I've seen in the Northeast either have some kind of access panel, or the shower is backed by a closet in another room where you could cut in if you needed to.
I'm in Jersey and I do not have that on my home. The only home I can think of that had it was my childhood home. Current home is 1920s, childhood home was probably 50s, teen home was 80s, and lived in various other places after that, and really never saw the access panel, though I agree it makes sense to have.
Form over function, can't have people judging me for my prudence.