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Bosch Spare Parts

GlobalTowne sells replacement parts for all Bosch gas, propane and electric tankless water heaters and electric mini-tanks. We list the most common Bosch heat exchangers, water valves, gas valves, control boards, control boxes and hydrogenerator on this page. Call us at 888.726.9752 for pricing and availability on all other Bosch parts.

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  1. Bosch ProTankless 425PN Heat Exchanger #8705406275

    Bosch ProTankless 425PN Heat Exchanger #8705406275

    Bosch ProTankless 425PN Heat Exchanger #8705406275 Learn More

    Regular Price: $399.95

    Special Price: $348.95

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