Gas Tankless Water Heaters

High-efficiency gas tankless water heaters from Bosch.

Enjoy the energy-efficient, endless supply of hot water that only a gas tankless water heater can deliver.

Water Heaters

Greentherm 9000 Series

Greentherm 9000 Series

It's time to go tankless with this innovative gas tankless water heater.

  • Space-saving, state-of-the-art tankless design
  • Ultra efficient condensing technology with UEF up to 0.96
  • Wi-Fi accessory & App increases functionality
  • Top water connections for easy tank replacement
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Water Heater

Therm Series

Therm Series

Get proven reliability with the Therm Series tankless water heaters.

  • Ultra low NOx Certified
  • Non-condensing up to 24 units
  • Available in NG and LP configurations
  • Digital display for accurate temperature setting
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