The Bosch ProTankless 425 HN L (Liquid Propane) incorporates an evolutionary hydro-power ignition system which allows this tankless water heater to work without a standing pilot, grid connection or battery! A small turbine inside the water heater uses the energy from the flowing water to ignite the burner. The modulating gas valve then maintains a constant temperature at varying flow rates. This innovative technology, patented by Bosch, makes this an ideal product for installations without access to electricity or regions prone to inclement weather and power outages.
This 117,000 BTU/hr maximum input heater has enough power for running a shower and a sink simultaneously.
This Bosch Pro Tankless water heater can be used as a replacement for any of the Bosch propane tankless water heaters that used the HydroGenerator, including the Bosch AquaStar 125HX LP, Bosch AquaStar 1600H LP and the Bosch Therm 520 HN L. It can also be used as a replacement for any of the Bosch propane tankless water heaters that had a standing pilot light, including the Bosch AquaStar 125B LP, Bosch AquaStar 1600P LP and the Bosch Therm 520 PN L.
We currently have 9 units left in stock as of 08/30/21
Please call Global Protankless Supply at 866-289-4652 with any questions or to place an order.