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Tankless Water Heater Bosch 9800 Series Capacity 160,000 BTU

  • Rating
  • Capacity 160000
  • Fuel Type Natural Gas
  • Energy Star Listed Yes
  • CSA Listed Yes
  • AHRI Certified Yes
  • UPC Listed Yes
  • Warranty Up to 10 years on parts
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Bosch Thermotechnology

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.


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.


  • Model T9800 S160
  • Fuel Type Natural Gas
  • Combustion Type Condensing
  • Vent Type Direct Vent
  • Venting Category IV
  • Mount Type Wall
  • Installation Location Indoor
  • Gas Conversion Kit Included
  • Maximum Input Capacity 160000 BTU
  • Minimum Input Capacity 9000 BTU
  • Voltage 120 Volts
  • Phase 1
  • Frequency 60 Hz
  • Primary Vent Pipe Diameter 3 Inches
  • Gas Connection Size 3/4 Inch
  • Cold Water Inlet 3/4 Inch
  • Hot Water Outlet 3/4 Inch
  • Product Height 31 1/2 Inches
  • Product Width 18 29/48 Inches
  • Product Depth 9 41/48 Inches
  • Product Weight 73.2 Pounds
  • Energy Star Listed Yes
  • CSA Listed Yes
  • AHRI Certified Yes
  • UPC Listed Yes
  • AHRI Reference Number 9963061
Tankless Water Heater Bosch 9800 Series Capacity 160,000 BTU
*Product With Installation


How do I choose the right size of central AC for my home?
Various factors need to be considered such as
• Specific region and climate in which you live
• Orientation of your home (for example, if it faces west)
• Size and age of your windows
• Your home’s ventilation system and ductwork
• Quality and quantity of your home’s insulation
• Age of your home
How does a new high efficiency AC will help me save energy bills?
Choose ENERGY STAR® certified ACs
ENERGY STAR certified central air conditioners have higher seasonal energy efficiency ratio (SEER) ratings and use less energy than conventional new models*. Our experts can help you choose an ENERGY STAR certified AC that’s right for your needs. Schedule a no-obligation, in-home consultation with a Home Comfort Advisor today.
How long does an installation take? What time will they arrive? Do I need to be home for the installation?
Every installation is different, and every project presents unique installation challenges, but we aim to have all installations completed in one day. Technicians will arrive at the prearranged agreed upon time and will keep you updated on the progress throughout the day. We always recommend that homeowners are present during installation, but if that’s not possible, we require someone over the age of 18 to be home during installation.
Can I buy it online and install by myself?
HVAC or Boiler installation requires electrical, gas and refrigerant knowledge as well as familiarity with local bylaws and building codes. Failure to properly install HVAC equipment can create safety concerns and performance issues as well as void manufacturer warranties. For those reasons, we always recommends professional installation.
What Are Maintenance Needs of the Air Conditioner?
Scheduling preventive maintenance is essential if you want to protect your investment in your air conditioner. Routine basic maintenance helps prevent problems from occurring and extends the life of your air conditioning unit.
Along with your air conditioning installation, ask about the preventative maintenance service of your contractor. What is included, and what is the cost?
When Can You Install My New Air Conditioner?
There’s just one more thing to do. You should consider the best time to install your new air conditioner.
If you have an existing air conditioner that is not working and summer is approaching then you may want to get this done soon. Even if you have a functioning air conditioner, the installation process will mean you will be without air conditioning for at least some time. There will also be some disruption in your home while work is completed.
Discuss your preferred installation timescale with your home comfort advisor. They will explain the process and work with you to keep disruption to a minimum.

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