I have a tankless water heater, love it! And it's not the issue.
I have a very leaky shower. I've been in my house for almost 20 years and for the first 10, I didn't mind the very slow drip since my cat loved to hop in and drink from the flow. She's gone now and the drip has become quite a significant leak, enough that I have watched my water bill climb over the last couple of months. I know the consumer amount hasn't increased as I live alone. And with working 60 hours a week, I am struggling to find the time to actually get a plumber in the house for the repair.
My question is, am I going to harm my tankless if I'm shutting the main off before I go to bed and before I leave for work. I hate the thought of wasting water when I can give it a temporary fix, and the utility bill as well. Thanks for any advice and answers.