Bosch Greentherm T9900 SE 199,000 BTU Natural Gas Tankless Water Heater
SKU: 87300750688

Bosch Greentherm T9900 SE 199,000 BTU Natural Gas Tankless Water Heater

Sale price$1327.50 Regular price$1475.00
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Description

Bosch Greentherm T9900 SE 199,000 BTU Natural Gas Tankless Water HeaterSummary Bosch Greentherm T9900 SE 199,000 BTU with built in a recirculation pump provides you with endless, on demand hot water for your home or business. This natural gas tankless hot water heater is designed for homes that have more demand on a daily basis. 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

Summary

Bosch Greentherm T9900 SE 199,000 BTU with built-in a recirculation pump provides you with endless, on-demand hot water for your home or business. This natural gas tankless hot water heater is designed for homes that have more demand on a daily basis. 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: T9900
  • Unit Size: 199,000 BTU/H
  • Wifi Enabled: No (Add Wifi Kit)
  • Recirculation Pump Included: Yes
  • 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 19/32" W x 31.5" H x 9 27/32" D
  • Weight: 77.2 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 T9900 SE 160
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: 87300750688

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Ben
Birmingham, US
★★★★★ 5
The watch of our era
Color: Blackout
Bought this ‘used’ but looks like only the box had some ‘damage’ but the watch was perfectly brand new. I’ve been wearing a timex Ironman watch since my tenth birthday. I’ve served in the Marine corps and wore one while on tour. I’ve worn them snorkeling and diving. I’m a mechanic and have worn it on my belt loop while working, and depending what I’m doing I’ll leave it on. I wear it in the shower, the pool, beach, kayaking, skydiving, mudding, surfing, fishing, shooting, and while relaxing in my recliner. I’ve only had one battery die, and it was easily replaced. This is the watch of our era. Stop reading this review and buy one!
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Reviewed in the United States on April 27, 2026
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Starboard10
Chelsea, US
★★★★★ 3
Very dim
Color: Black/Yellow Accent
This was a gift for our son. The watch functions well, but I returned it because the screen was very hard to read.
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Reviewed in the United States on April 16, 2026
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Kimberly L. Howard
Charlottesville, US
★★★★★ 5
Trust this seller speaks the truth!!
Color: C-Blue
Comfort is a 10! Appearance is very very nice!! Readability is excellent! Accuracy is 💯 !! Quality is a 10! Value - couldn’t love it more!! At first I didn’t think that he sent me a watch without a battery, but lo and behold I opened the box again and definitely saw the watch was working! I’ve been scammed several times- but this is truly AWESOME !!! Thank you all!!!
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Reviewed in the United States on May 20, 2026
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MARK ELI UBOL VILLARUEL
Whiting, US
★★★★★ 5
It tells the time, day of the week and date of the month.
Color: A-Green Luminous, Color: A-Green Luminous
Affordable, functional, and practical. And it glows in the dark.
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Reviewed in the United States on June 3, 2026
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Jerry W. Eastman
Chelsea, US
★★★★★ 4
Hard to set day/date.
Color: A-Black
Watch very professional looking and appears to be well made. Everything about this watch is what I have been looking for at a reasonable price. The only issue I have is how to set the watches features, time, date, and day. The instructions are very clear and well written, to a point. That point being the instructions say to move the "crystal" to the first notch, to adjust the day/date, and the second notch for to set the time. What the instructions fail to mention is the day/date adjustment must be turned a full 24 hours to the next day or date settlings. Also, trying to hit just the second notch is almost impossible as the is no distinct way of knowing if you are in it or not,
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