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Takagi T-H3S-OS-NG 180,000 BTU Natural Gas Outdoor Condensing Ultra-Low NOx

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Takagi T-H3S-OS-NG 180,000 BTU Natural Gas Outdoor Condensing Ultra-Low NOx - The Takagi T-H3S-OS-NG Tankless Water Heater is Top Selling - In Stock - Features a Flow Rate of 8.0 GPM Gallons Per Minute GPM at 35 Temperture Rise -T-H3S-OS-NG Takagi Tankless on Sale

Takagi T-H3S-OS - 180,000 BTU Natural Gas Outdoor Condensing Ultra-Low NOx


The T-H3S supplies hot water to domestic hot water systems (directly or indirectly) which can be used with storage tanks, recirculation systems, hydronic heating systems, radiant floor systems, and/or domestic & heating applications.

The T-H3S is a high efficient, condensing tankless water heater perfect for residential applications. With gas inputs of 180,000 BTU, the T-H3J can produce enough hot water for three bathrooms in warmer climates or two baths in colder climates.

  • ENERGY STAR qualified
  • 15-year limited heat exchanger, 5 yrs limited parts Residential use
  • Energy Factor of 0.95 for Natural Gas
  • Maximum flow rate of 8.0 GPM at 35°F temperature rise (4.9 GPM at 70°F rise)
  • Primary heat exchanger utilizes HRS35 commercial-grade copper alloy for 25 times better heat transfer than stainless steel
  • Secondary heat exchanger utilizes 316L stainless steel for better corrosion resistance
  • NSF certified for commercial applications
  • Complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm)
  • Includes remote control as standard feature
  • Safety features include freeze, overheat, surge protection, and troubleshooting diagnostic codes
More Information
Weight 62.0000
Manufacturer Takagi
UPC 671657141196
GTIN 00671657141196
Voltage 120V
Energy Source Natural Gas
Flow Rate @ 35 F Rise 8.0 GPM
Flow Rate @ 45 F Rise 7.6 GPM
Flow Rate @ 65 F Rise 5.3 GPM
Water Connection 3/4 Inch
Max Heating BTU 180,000

File Downloads

(Size: 10.4 MB)
Models • 240 Outdoor (T-H3J-OS) • 340 Outdoor (T-H3S-OS) • 540 Outdoor (T-H3-OS) • 240 Indoor (T-H3J-DV) • 340 Indoor (T-H3S-DV) • 540 Indoor (T-H3-DV)
(Size: 655.5 KB)
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