I have a b & b with 5 guest rooms and a manager's apartment, each with it's own claw-foot tub/shower combo. So theoretically 6 people could be bathing or showering at once, and occasionally we get complaints that the hot water has gone cold, we currently have a single 50 gallon electric residential water heater. I am searching for the best option to either add to or replace so that guests do not run out of hot water. The plumbing was replaced a year ago and is set up so that 3 bathrooms are on 2 separate water lines after coming into the house, with shower heads all 2.5 gpm. Thus we have the option of either having 2 separate heating systems for 3 bathrooms each, or keeping them together and having 1 or more heaters working together somehow for all 6 bathrooms.
Your thought are appreciated,