Comment: we have a Rinnai tankless hot water heater..we moved into this house at the end of March and it worked fine. now the hot water runs out so fast.
Comment: Water heater beeps and produces no hot water over 60% of the time. Turning off the water and then back on fixes it but need to be able to produce hot water without this step. Previous owner said it happened when the pilot light doesn't light initially.