Trust innovative Bosch products to get the job done right - at your home or on the job. Choose Bosch Tankless Water Heaters for the latest and finest in technology and design. Tankless water heaters are the most efficient way to heat your water. You open a hot water tap, cold water enters the heater and triggers the heating elements or burners. Your hot water tap acts as an ignition key for the energy used to heat only the water you need.
NEW! Bosch GWH 345/450 ESR
- Durable heat exchanger specifically designed for recirculating applications
- 10-year limited warranty
NEW! Bosch GWH 715 ES
- 82% thermal efficiency - .82 energy factor
- Vents vertically or horizontally with 3" stainless steel (AL29-4C)
NEW! Bosch GWH C 800 ES
- 92% thermal efficiency - .90 energy factor
- Vents vertically or horizontally with 3" PVC, CPVC or ABS-DWV
Bosch 260 PN
- 78% average efficiency
- Low volume gas tankless water heater with pilot ignition
Bosch 425 PN
- Modulating gas valve ensures constant temperature at varying flow rates
- Standing pilot ignition
Bosch 635 ESO
- Saves up to 50% off utility costs
- Built-in freeze protection to 5°F
Bosch 635 ES
- Powerful enough to supply two showers running simultaneously
- Direct vent room sealed combustion
Bosch 425 HNO
- Outdoor model with Bosch hydro-generated ignition technology
- Built-in freeze protection to 5°F
Bosch 425 HN
- Ideal for households looking to maximize energy savings
- Patented Bosch hydro-generated ignition technology
Bosch 425 EF
- Perfect for situations that require sidewall venting
- Electronic ignition with built-in power vent