Gas Tankless Water Heaters
High-efficiency gas tankless water heaters from Bosch.
High-efficiency gas tankless water heaters from Bosch offer an endless supply of hot water. Rather than storing water in a storage tank, gas tankless water heaters heat water directly through the pipes — no tank required. When a hot water faucet is turned on, cold water flows through a heat exchanger in the unit and is warmed by a natural gas burner.
This feature allows tankless water heaters to deliver a constant supply of hot water. Bosch gas tankless water heaters are built to last and have lower operating and energy costs to provide sustainable home comfort.
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Water Heaters
Greentherm 9000 Series
- Space-saving, state-of-the-art tankless design
- Ultra efficient condensing technology with UEF up to 0.95
- Wi-Fi accessory & App increases functionality
- Top water connections for easy tank replacement
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Water Heater
Therm Series
- Ultra low NOx Certified
- Non-condensing up to 24 units
- Available in NG and LP configurations
- Digital display for accurate temperature setting
It may be discontinued. Browse the Discontinued Products section.