Bosch Greentherm T9800 SE 199 NG / LP Tankless Water Heater

By Bosch

Product Sizing
  • up to 4.4 GPM with 50°C increase
  • enough on-demand hot water for 2-3 applications
  • 199,000 BTU
Shipping Information
  • This item quallifies for $95 terminal shipping across Canada!
  • This item can be shipped directly to your address for an extra cost; contact our team for a personalized shipping quote.

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Yes, this product is Energy Star certified!

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Greener Homes Grant Eligibility

No, this product is not eligible for the Canada Greener Homes Grant, except possibly for Northern or off-grid communities.

Click to learn more about the Canadian Greener Homes Initiative and product eligibility here.

  • 15 Year Heat Exchange
  • 5 Year Other Parts

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Endless On-Demand Hot Water (for that extra-long winter morning shower)

The Bosch Greentherm T9800 SE 199 Condensing tankless water heater is an ultra-efficient, top performance, fully condensing gas tankless water heater from Bosch. The Greentherm T9800 is a 199,000 BTU/hr heater is designed for residential homes and apartments, and can deliver up to 4.4 GPM with a 50°C rise!

This Energy Star approved tankless water heater can produce enough hot water for 2-3 major applications in most homes - think of the possibilities! Showering & doing laundry at the same time!

Bosch condensing gas tankless water heaters are ultra efficient systems. Unlike traditional non-condensing water heaters, a condensing unit captures latent condensation heat from exhaust gas and uses it to preheat the incoming cold water, making Bosch condensing tankless water heaters 15% more efficient than a traditional tankless water heater.

Key features of the Bosch Greentherm T9800 SE 199 Tankless Gas Water Heater (T9800-SE-199):

  • Ultra-efficient, on-demand domestic hot water - 4.4 GPM of unlimited hot water fed to your home (45 minutes long shower, anyone?)
  • Tankless on-demand hot water solution, freeing up precious floor space in your home & eliminating costly hot water tank replacements
  • WiFi accessory & app - connect another appliance to your Smart Home network!
  • Integrated Freeze protection (definitely nice in oh-so-warm Canada)
  • Superior aluminum and copper heat exchanger construction captures 15% more heat energy than a traditional tankless water heater
  • Modulating burner design with uniform flame coverage ensures greater efficiency and performance
  • Built-in turbulators reduce scale build up
  • Digital control panel and the ability to adjust output temperatures in precise 2°F increments is especially important in homes with children and elderly family members
  • Clean combustion process achieves up to 98% thermal efficiency and reduces NOx emissions ahead of 2012 SCAQMD regulations
  • EnergyStar Approved Product

If you have any questions additional questions regarding tankless gas water heaters, please visit our Support & Knowledge Center or contact us.

Installation services from only $500. To request a quote for installation from our trusted network of professionals, make sure to select "Yes - please connect me with a local professional" at checkout.

Note: it is possible to convert these natural gas water heaters to be propane compatible; please contact us directly for a conversion kit quote.

Safety warning: this is a gas appliance, and as such, requires certified, professional installation. Failure to properly install & commission a gas appliance can lead to serious damage, injury, or death.

More information regarding Bosch Greentherm T9800 SE 199 Gas Tankless water heaters can be found below:

Bosch Greentherm 9000 Series Product Brochure

Bosch Greentherm T9800 SE 199 Energy Star

Bosch Thermotechnology Gas Tankless Water Heaters

Bosch Condensing Tankless Technology

Energy Saving Info by Bosch Thermotechnology

Product Dimensions & Sizing Approximations:


Water Tank Capacity
BTU/Hr Input Dimensions (H x W x D)
T9800 SE 199
endless hot water on demand*
199,000 BTU/Hr 32" x 19" x 10"

*endless so long as your gas & water continue. Shower for as long as you desire.