I just had a Bosch propane tankless put in and I love it. It is in the closet in my bedroom and I remember the old one turning on and off all night and I cringed at the power it used plus with our hard water the heaters would fill up with calcium and we had to throw it out then. Our hard water build up made flakes that wouldn't run out the drain pipe so it built up or I had to open it up and srape it out. They are more money but worth it.
Lynda