Tankless Water Heater Bosch 9800 Series

  • Rating
  • Capacity160000 BTU, 199000 BTU
  • Fuel TypeNatural Gas
  • Energy Star ListedYes
  • CSA ListedYes
  • AHRI CertifiedYes
  • UPC ListedYes
  • WarrantyUp to 10 years on parts
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The Bosch Group has been a leading global supplier of technology and services in the areas of Automotive, Industrial Technology, Consumer Goods, and Building Technology for over 100 years. The company was founded in Stuttgart, Germany, in 1886 and today has more than 300 subsidiaries in over 150 countries.

Environmental stewardship inspires and drives Bosch product development. Today, Bosch is a leader in the development of next-generation technologies that deliver improved performance and efficiency while conserving our natural resources. In the area of sustainable mobility, we’re helping reduce the fuel consumption and CO2 emissions of new vehicles. Energy efficiency and environmental protection are also shaping our Industrial Technology, Consumer Goods, and Building Technology products. Green technologies, such as gas tankless water heaters, heat pump electric water heaters, photovoltaics, wind power, and geothermal systems are perhaps the best examples of smart technologies growing in demand and shaping the future of Bosch.

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Bosch’s Greentherm tankless water heaters provide whole-home hot water while featuring some of the best efficiency ratings on the market. Greentherm water heaters boast an impressive .99 Uniform Energy Factor, which allows them to meet your hot water needs while not draining your wallet. The 9000 series features Bosch’s plug n’ play design, making installation a breeze when paired with its multiple venting options. Optional Wi-Fi connectivity gives you complete control of your hot water at your fingertips.

Optiflow Management Technology

This water heater features Bosch’s Optiflow system, which uses self-calibrating sensors to automatically configure flue length, gas type, and altitude without a gas analyzer.

Easy to Install

Bosch Greentherm water heaters come with a flexible and compact plug n’ play design, top hyrdaulic connections, and bottom flush ports, making them perfect to replace old tank-type heaters.

Built-In Digital Control Panel

The Greentherm tankless hot water heaters have a digital control panel on the front of your unit to adjust temperature and to make sure your system is running properly.

Active Bypass

The Greentherm models all come with an automated, fully modulating bypass for temperature stability to ensure you have a constant, accurate temperature.

Convenient Gas Hook Up

The ability to use an existing 1/2″ gas line makes the Greentherm an ideal option for storage tank retrofits.

Optional Wi-Fi Control

Control your water heater with the push of a button using Bosch’s Wi-Fi app, available in the Apple Store and Google Play.


  • ModelT9800 S160
  • Fuel TypeNatural Gas
  • Combustion TypeCondensing
  • Vent TypeDirect Vent
  • Venting CategoryIV
  • Mount TypeWall
  • Installation LocationIndoor
  • Gas Conversion KitIncluded
  • Maximum Input Capacity160000 BTU
  • Minimum Input Capacity9000 BTU
  • Voltage120 Volts
  • Phase1
  • Frequency60 Hz
  • Primary Vent Pipe Diameter3 Inches
  • Gas Connection Size3/4 Inch
  • Cold Water Inlet3/4 Inch
  • Hot Water Outlet3/4 Inch
  • Product Height31 1/2 Inches
  • Product Width18 29/48 Inches
  • Product Depth9 41/48 Inches
  • Product Weight73.2 Pounds
  • Energy Star ListedYes
  • CSA ListedYes
  • AHRI CertifiedYes
  • UPC ListedYes
  • AHRI Reference Number9963061
Tankless Water Heater Bosch 9800 Series
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*Product With Installation
*Product With Installation
Frame 1924 1

Additional information


160,000 BTU, 199,000 BTU


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