The average lifespan of a Bosch tankless water heater ranges between eighteen and twenty-five years when the equipment is properly sized, professionally installed, and maintained with regular annual descaling flushes. Bosch manufactures high-efficiency condensing and non-condensing gas tankless systems featuring robust commercial-grade heat exchangers designed to withstand continuous use. This impressive longevity drastically surpasses traditional storage tank water heaters because Bosch tankless units heat water strictly on demand, minimizing constant water pressure stress and interior tank corrosion.
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