The manufacturer warranty on a Bosch residential tankless water heater typically provides fifteen years of protection on the primary heat exchanger, five years on internal component parts, and a limited duration for labor coverage if registered properly. This comprehensive warranty underscores the brand's confidence in its commercial-grade materials and precision engineering. To maintain active warranty status, homeowners must ensure the unit is installed by a licensed professional, registered with the manufacturer, and serviced annually with routine descaling flushes to prevent mineral scale accumulation.
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