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  • Tankless Water Heater Non-condensing Indoor 190,000 BTU Natural Gas

State Tankless Water Heater GTS-310-NI Non-Condensing Indoor 190,000 BTU Natural Gas


Tankless Water Heater Non-condensing Indoor 190,000 BTU Natural Gas

The 310 Series is the most versatile and popular tankless model we offer. The 310 features a max flow rate of 8.0 gallons per minute providing enough hot water to run three showers at the same time. Remote control included as a standard feature. Provides a variety of installation options: indoor, outdoor, and direct vent.

The GTS-310-NI tankless water heater uses up to 190,000 BTU/hr of natural gas to deliver an endless supply of hot water for a 2.5 bath home in northern climates and up to a 3.5 bath home in southern climates (one shower head per bath). The GTS-310-NI is ENERGY STAR® qualified with a Uniform Energy Factor of 0.80. With an industry leading 15-year limited warranty, the GTS-310-NI tankless water heater provides years of hot water through innovation and quality.


  • Emissions: Low NOx
  • Maximum BTU/h: 190,000
  • UEF 0.80
  • Minimum BTU/h: 11,000
  • Limited Heat Exchanger Warranty: 15 Years
  • Limited Parts Warranty: 5 Years
  • Water Connection Location: Bottom
  • Water Connection Size: 3/4"
  • Heat Exchanger: Commercial-Grade Copper
  • Voltage: 120
  • Remote Control: Yes
  • Technology: Non-Condensing
  • Height: 20 1/4"
  • Width: 13 3/4"
  • Depth: 9 1/2"
  • Product Weight: 38 lbs/17 kg
  • Shipping Weight: 43
  • Vent Type: Direct Vent
  • Vent Length: 50 feet at 4 diameter
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