To clean the water filter on your Rinnai water heater, first, turn off the water supply. Then, locate the filter, which is typically at the inlet of the water heater. Unscrew and remove the filter. Rinse it thoroughly under running water, using a soft brush if necessary to remove any debris. Once clean, replace the filter and screw it back into place. Finally, turn the water supply back on. Always refer to your user manual for specific instructions related to your model.
If you encounter any difficulties or need professional assistance, the experts at 5 Star Best Plumbing are always ready to help with any water heater repair or maintenance tasks.