How often should I descale my tankless water heater?

In Mount Pleasant, SC, we recommend once every 12 months. If you do not have a water softener, every 6-9 months is safer.

What is a "Secondary" Rinnai Error Code?

Secondary or "Diagnostic" codes are hidden values accessed by technicians to view historical data, such as the exact mineral density detected or the number of times the unit has overheated.

Can I use regular vinegar to flush my unit?

While white vinegar works for mild buildup, professional descaling solutions are more effective at breaking down "rock-hard" calcium deposits without damaging internal seals.