Wednesday, July 1, 2009

Replacing Legacy Bosch Tankless Heaters

We have just started getting some calls from customers who are looking to replace some of the original Commercial Bosch Tankless Water Heaters that were introduced into the market 20 years ago.

If you are looking to replace any of the following Bosch On-Demand Water Heaters, please give us a call at 888.726.9752 so we can help you match your heater up with its current replacement model:
  • Bosch WR400-1K (117,000 BTU, Pilot Light)
  • Bosch WR400-3K (B) (117,000 BTU, Electronic Ignition)
  • Bosch WR400-5K (117,000 BTU, Pilot Light)
  • Bosch WR400-7K (117,000 BTU, Hydro Ignition)
  • Bosch WR430-3KV (125,000 BTU, Electronic Ignition)
  • Bosch WR125-K (125,000 BTU, Pilot Light)



  1. Are there parts available for Bosch WR400-3K, Instantaneous gas water heater?

  2. Some parts for the Bosch WR400-3K tankless water heater are still available.

    Please call us at 888-726-9752 with a list of the parts you need and we will check pricing and availability.

    Alternatively, you may want to consider the purchase of a new Bosch Therm 520 series tankless water heater while they are still available.