SKU: 54715632428

Bosch Greentherm T9800 SE 199,000 BTU Propane Tankless Water Heater

Sale price$1102.50 Regular price$1225.00
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Description

Bosch Greentherm T9800 SE 199,000 BTU Propane Tankless Water HeaterSummary Bosch Greentherm T9800 provides you with endless, on demand hot water for your home or business. This is the largest liquid propane tankless hot water heater Bosch has to offer. Created with Bosch's quality engineering and manufacturing, this unit is designed to run for up to 15 years if properly maintained. Typically, all hot water heaters we offer can be on the way to you within 1 2 business days. Why Choose Bosch? Bosch Greentherm is unique

Summary

Bosch Greentherm T9800 provides you with endless, on-demand hot water for your home or business. This is the largest liquid propane tankless hot water heater Bosch has to offer. Created with Bosch's quality engineering and manufacturing, this unit is designed to run for up to 15 years if properly maintained.  Typically, all hot water heaters we offer can be on the way to you within 1-2 business days.

Why Choose Bosch? 

Bosch Greentherm is unique because all plumbing connections are made from the top of the unit. This saves you on labor and material cost since it takes less time and materials to transition from a tanked water heater to new tankless water heater. A quality system plus an easy install is what keeps Bosch at the top of rankings. 

General Information

  • Unit Type: Water Heater
  • Product Line: T9800
  • Unit Size: 199,000 BTU/H
  • Energy Source: Liquid Propane
  • Wifi Enabled: No (Add Wifi Kit)
  • Recirculation Pump Included: No (Add Recirculation Pump)
  • Isolation Valves Included: No (Add Isolation Valves)
  • Propane Conversion Kit: No (Add Propane Conversion Kit)

Product Details

  • Space-saving, state-of-the-art tankless design
  • Ultra-efficient with UEF ratings up to 0.96
  • High-resolution color LCD interface
  • Wi-Fi accessory & App increases functionality
  • Ability to control external pumps
  • Industry-leading 22:1 turn down ratio
  • 60ft venting using 2" pipe
  • Ultra-Low NOx Certified
  • Integrated freeze protection
  • Stainless Steel condensing heat exchanger

Installation Dimensions

  • 18 9/16" W x 37" H x 9 13/16" D
  • Weight: 78 lbs
  • Indoor hung
  • 2" exhaust & intake

Warranty Information

  • Standard Recirculation: 1-year labor, 5-year parts, 15-year heat exchangers
  • Uncontrolled Recirculation: 1-year labor, 3-year parts, 5-year heat exchangers
  • DISCLAIMER: Unit must be installed by Bosch ABC Contractor or a Licensed Plumber
  • Bosch requires a Licensed Plumber to call technical support in a breakdown emergency. 

Certifications

  • Energy Star: Yes
  • UEF: 0.96
  • Efficiency: 99%
  • AHRI Certified: Yes

 Technical Specifications:

Flow Rate Unit T9800 SE 199
Maximum flow rate at a 35 °F (19.4 °C) rise GPM (l/min) 11.2 (42.4)
Maximum flow rate at a 45 °F (25 °C) rise GPM (l/min) 8.7 (32.9)
Maximum flow rate at a 55 °F (30.6 °C) rise GPM (l/min) 7.2 (27.5)
Maximum flow rate at a 75 °F (41.7 °C) rise GPM (l/min) 5.2 (19.7)
Maximum flow rate at a 90 °F (50 °C) rise GPM (l/min) 4.4 (16.6)
Maximum gas input¹ BTU/hr (kW) 199,000 (58.3)
Minimum input² BTU/hr (kW) 9,000 (2.6)
Maximum output BTU/hr (kW) 197,010 (57.7)
Thermal efficiency (Efficiency in %) % > 99%
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 54715632428

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Angela A Mathis
Pawtucket, US
★★★★★ 5
Good Product
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
These socks are good for moistening. Durability is awesome Fit true to size. Traction could be a little better. The sock are very comfortable
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Reviewed in the United States on April 23, 2026
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Tj
Belleville, US
★★★★★ 4
Slippery when wet!!!
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
“These moisturizing slippers are actually really comfortable and feel great on the feet. They’re soft, cozy, and do help moisturize while you wear them. I also think they’re a good value for the money. The only downside is that once your feet get moisturized, they can get slippery inside the slippers, so I wouldn’t recommend walking around too much in them. Better for relaxing and letting your feet soak up the moisture than for being up and moving around.”
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Reviewed in the United States on May 26, 2026
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J. Randle
Waukegan, US
★★★★★ 5
Love them
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I wear a size 11.5 in ladies shoe and these just barely fit. Butttt after I put lotion on my feet and slipped these on and left them on for about 30 mins. It left my feet really soft! They work great as intended. Would buy again
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Reviewed in the United States on January 31, 2026
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Vonda Kioultzopoulos
Birmingham, US
★★★★★ 3
Effective but may be uncomfortable
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I have eczema on my feet and use a prescription cream that I leave on overnight. I often have a problem sleeping in socks but the silicone feels cool on my feet. The only drawback I have is the opening of the socks feel very tight around my ankles making them uncomfortable on me. I wish the opening was a bit more flexible.
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Reviewed in the United States on September 20, 2025
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Tessy
Fort Morgan, US
★★★★★ 1
Burned my already sensitive feet, too big
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
Feels icky, and the heat gets trapped and literally felt like my feet were being burned by these. The bottoms of these feel prickly and they are way too big. You have to sit still and cannot walk in them.
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Reviewed in the United States on April 22, 2026

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