What type of periodic maintenance does Rinnai tankless water heater require?
Here are two pieces of periodic maintenance that you or your service technician can perform to keep your Rinnai tankless water heater running smoothly: In-line screen filter should be checked periodically for debris: (Period between filter checks will be dependent on water quality). Insure incoming water is turned off. The filter is located on inlet fixture below cabinet. Unscrew plug to remove. Expect some water drain off. Filter is a cylindrical screen. Also, flush the unit periodically (Period between flushes will be dependent on water quality).
