We have turned off one of our gas water heaters because we simply have low demand. What we wonder about is how to treat the mothballed heater? Should we leave the water in it? switch between water heaters monthly or at all? What problems with the water itself will occur if we do not use a water heater?
What is the best scheme to keep the unused heater in good shape so as to be a replacement should the other heater fail? Thanks for your help, E. Underwood