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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 Non-Condensing tankless water heaters with more compact models and greater installation versatility - to satisfy all your residential applications.

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

    Bosch Therm 520 HN NG (Natural Gas)

    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: $1,275.00

    Special Price: $1,099.99

    Details
  2. Bosch AquaStar 2700 ES LP (Liquid Propane) Whole-House Tankless Water Heater

    Bosch AquaStar 2700 ES LP (Liquid Propane)

    Bosch AquaStar 2700ES-LP (Liquid Propane) whole-house tankless water heater

    199,000 BTUs and up to 140 degrees F, Electronic Ignition, Stainless Steel exhaust, Energy Star, 2013 Federal Tax Credit Eligible Learn More

    Regular Price: $1,460.00

    Special Price: $1,085.00

    Details
  3. Bosch AquaStar 2700 ES NG (Natural Gas) Whole-House Tankless Water Heater

    Bosch AquaStar 2700 ES NG (Natural Gas)

    Bosch AquaStar 2700ES-NG (Natural Gas) whole-house tankless water heater

    199,000 BTUs and up to 140 degrees F, Electronic Ignition, Stainless Steel exhaust, Energy Star, 2013 Federal Tax Credit Eligible Learn More

    Regular Price: $1,460.00

    Special Price: $1,085.00

    Details
  4. Takagi-T-H3S-DV-P (Liquid Propane) Whole-House Tankless Water Heater

    Takagi-T-H3S-DV-P (Liquid Propane)

    Takagi-T-H3S-DV-P (Liquid Propane) Tankless Water Heater with Secondary Condensing Heat Exchanger

    180,000 BTUs and up to 140 degrees F, Electronic Ignition, PVC Exhaust, Energy Star, 3/4" NPT Gas Line, Heating Applications, Recirculation, Glycol Learn More

    Regular Price: $1,199.00

    Special Price: $1,045.00

    Details
  5. Takagi-T-H3S-DV-N (Natural Gas) Whole-House Tankless Water Heater

    Takagi-T-H3S-DV-N (Natural Gas)

    Takagi-T-H3S-DV-N (Natural Gas) Tankless Water Heater with Secondary Condensing Heat Exchanger

    180,000 BTUs and up to 140 degrees F, Electronic Ignition, PVC Exhaust, Energy Star, 3/4" NPT Gas Line, Heating Applications, Recirculation, Glycol Learn More

    Regular Price: $1,199.00

    Special Price: $1,045.00

    Details
  6. Bosch Therm 520 PN NG (Natural Gas) Whole-House Tankless Water Heater

    Bosch Therm 520 PN NG (Natural Gas)

    Bosch Therm 520PN-NG (Natural Gas) whole-house tankless water heater

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

    Regular Price: $1,199.00

    Special Price: $999.00

    Details
  7. Bosch AquaStar 2400 ES NG (Natural Gas) Whole-House Tankless Water Heater

    Bosch AquaStar 2400 ES NG (Natural Gas)

    Bosch AquaStar 2400ES-NG (Natural Gas) whole-house tankless water heater

    175,000 BTUs and up to 140 degrees F, Electronic Ignition, Stainless Steel exhaust, Energy Star, 2013 Federal Tax Credit Eligible Learn More

    Regular Price: $1,260.00

    Special Price: $995.00

    Details
  8. Bosch AquaStar 2400 ES LP (Liquid Propane) Whole-House Tankless Water Heater

    Bosch AquaStar 2400 ES LP (Liquid Propane)

    Bosch AquaStar 2400ES-LP (Liquid Propane) whole-house tankless water heater

    175,000 BTUs and up to 140 degrees F, Electronic Ignition, Stainless Steel exhaust, Energy Star, 2013 Federal Tax Credit Eligible Learn More

    Regular Price: $1,260.00

    Special Price: $995.00

    Details
  9. Takagi-T-H3J-DV-P (Liquid Propane) Whole-House Tankless Water Heater

    Takagi-T-H3J-DV-P (Liquid Propane)

    Takagi-T-H3J-DV-P (Liquid Propane) Tankless Water Heater with Secondary Condensing Heat Exchanger

    160,000 BTUs and up to 140 degrees F, Electronic Ignition, PVC Exhaust, Energy Star, 3/4" Gas Line, Heating Applications, Recirculation, Glycol Learn More

    Regular Price: $1,099.00

    Special Price: $994.00

    Details
  10. Takagi-T-H3J-DV-N (Natural Gas) Whole-House Tankless Water Heater

    Takagi-T-H3J-DV-N (Natural Gas)

    Takagi-T-H3J-DV-N (Natural Gas) Tankless Water Heater with Secondary Condensing Heat Exchanger

    160,000 BTUs and up to 140 degrees F, Electronic Ignition, PVC Exhaust, Energy Star, 3/4" Gas Line, Heating Applications, Recirculation, Glycol Learn More

    Regular Price: $1,099.00

    Special Price: $994.00

    Details

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