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Gas Tankless Heaters

Bosch Tankless Water Heaters for whole house and point-of-use commercial and residential applications in Natural Gas and Liquid Propane. The expanded and advanced line of Bosch Therm tankless water heaters includes efficient Condensing and Non-Condensing tankless water heaters with more compact models and greater installation versatility - to satisfy all your commercial and residential applications.

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  1. Bosch Therm C 1210 ESC LP (Liquid Propane) Commercial Whole-House Tankless Water Heater

    Bosch Therm C 1210 ESC LP (Liquid Propane)

    Bosch Therm C 1210ESC-LP Liquid Propane tankless water heater with secondary condensing heat exchanger

    225,000 BTUs and up to 180 degrees F, Electronic Ignition, PVC exhaust Learn More

    Regular Price: $2,802.00

    Special Price: $1,999.00

    Details
  2. Bosch Therm C 1210 ESC NG (Natural Gas) Commercial Whole-House Tankless Water Heater

    Bosch Therm C 1210 ESC NG (Natural Gas)

    Bosch Therm C 1210ESC-NG (Natural Gas) tankless water heater with secondary condensing heat exchanger

    225,000 BTUs and up to 180 degrees F, Electronic Ignition, PVC exhaust Learn More

    Regular Price: $2,802.00

    Special Price: $1,999.00

    Details
  3. Bosch Therm C 1210 ES NG (Natural Gas) Whole-House Tankless Water Heater

    Bosch Therm C 1210 ES NG (Natural Gas)

    Bosch Therm C 1210ES-NG (Natural Gas) tankless water heater with secondary condensing heat exchanger

    225,000 BTUs and up to 140 degrees F, Electronic Ignition, PVC exhaust Learn More

    Regular Price: $2,617.00

    Special Price: $1,875.00

    Details
  4. Bosch Therm C 1210 ES LP (Liquid Propane) Whole-House Tankless Water Heater

    Bosch Therm C 1210 ES LP (Liquid Propane)

    Bosch Therm C 1210ES-LP Liquid Propane tankless water heater with secondary condensing heat exchanger

    225,000 BTUs and up to 140 degrees F, Electronic Ignition, PVC exhaust Learn More

    Regular Price: $2,617.00

    Special Price: $1,875.00

    Details
  5. Bosch ProTankless 425 HN NG (Natural Gas) Whole-House Tankless Water Heater

    Bosch ProTankless 425 HN NG (Natural Gas)

    Bosch ProTankless 425HN-NG (Natural Gas) whole-house tankless water heater

    117,000 BTUs, Hydro Ignition, B-Vent exhaust Learn More

    Regular Price: $1,999.00

    Special Price: $1,799.00

    Details
  6. Bosch Greentherm T 9900i SE 199 NG / LP Whole-House Tankless Water Heater with Built-in Recirculation Pump and Wi-Fi

    Bosch Greentherm T 9900i SE 199 NG / LP

    Bosch Greentherm T 9900i SE 199 Tankless Water Heater with Secondary Condensing Heat Exchanger, Built-in Recirculation Pump and Wi-Fi

    199,000 BTUs and Up to 140 degrees F, Electronic Ignition, PP or PVC exhaust, Energy Star, Natural Gas or Liquid Propane Learn More

    Regular Price: $2,100.00

    Special Price: $1,799.00

    Details
  7. Bosch Therm 520 PN LP (Liquid Propane) Whole-House Tankless Water Heater

    Bosch Therm 520 PN LP (Liquid Propane)

    Bosch Therm 520PN-LP (Liquid Propane) whole-house tankless water heater

    117,000 BTUs, Standing Pilot Light, 5" B-Vent exhaust
    NOT FOR SALE IN CALIFORNIA Learn More

    Regular Price: $1,899.00

    Special Price: $1,795.00

    Details
  8. USED Bosch Therm 520 HN NG (Natural Gas) Whole-House Tankless Water Heater

    USED Bosch Therm 520 HN NG (Natural Gas)

    PREVIOUSLY INSTALLED (BUT NOT USED) Bosch Therm 520HN-NG (Natural Gas) whole-house tankless water heater

    117,000 BTUs, Hydro Ignition, 5" B-Vent Exhaust
    NOT FOR SALE IN CALIFORNIA Learn More

    Regular Price: $1,999.00

    Special Price: $1,749.00

    Details
  9. Bosch Greentherm T 9900 SE 199 NG / LP Whole-House Tankless Water Heater with Built-in Recirculation Pump

    Bosch Greentherm T 9900 SE 199 NG / LP

    Bosch Greentherm T 9900 SE 199 Tankless Water Heater with Secondary Condensing Heat Exchanger and Built-in Recirculation Pump

    199,000 BTUs and Up to 140 degrees F, Electronic Ignition, PP or PVC exhaust, Energy Star, Natural Gas or Liquid Propane Learn More

    Regular Price: $1,884.00

    Special Price: $1,599.00

    Details
  10. Bosch ProTankless 425 EF LP (Liquid Propane) Whole-House Tankless Water Heater

    Bosch ProTankless 425 EF LP (Liquid Propane)

    Bosch ProTankless 425EF-LP (Liquid Propane) whole-house tankless water heater

    130,000 BTUs, Electronic Ignition, Side-Wall Vent Only Learn More

    Regular Price: $1,799.00

    Special Price: $1,599.00

    Details

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