Bosch Thermotechnology

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.

Greentherm 9000 Series
Water Heaters

Greentherm 9000 Series
  • Space-saving, state-of-the-art tankless design
  • Ultra efficient condensing technology with UEF up to 0.96
  • Wi-Fi accessory & App increases functionality
Therm Series
Water Heater

Therm Series
  • Ultra low NOx Certified
  • Non-condensing up to 24 units
  • Available in NG and LP configurations
ProTL Series
Gas Tankless Water Heaters

ProTL Series
  • Ultra low NOx Certified
  • Condensing and Non-Condensing
  • Available in NG and LP configurations