Browse Categories

American GT-340-NIH Condensing Ultra-Low NOx Indoor Tankless Water Heater

<< Previous in American Water Heaters Next in American Water Heaters >>
Price: $1,054.95
Item Number: GT340NIH
Manufacturer Name: American Water Heater
Manufacturer Part No: GT340

American GT-340-NIH Condensing Ultra-Low NOx Indoor Tankless Water Heater - 180,000 BTU - Natural Gas

Intallation Manual


The GT-340-NIH offers high efficiency Ultra-Low NOx condensing technology allowing for the use of 3" PVC venting and has 0" clearance to combustibles. Utilizing copper alloy for the heat exchanger tubing. Integrated control panel. Indoor models are certified up to 10,100 ft. altitude.

  • ENERGY STAR® qualified
  • 15-year limited Heat Exchanger Warranty, 5-year parts warranty, 1-year labor warranty for Residential applications
  • Copper Primary Heat Exchanger
  • Stainless Steel 316L Secondary Heat Exchanger
  • Complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm)
  • Condensing Indoor model
  • Safety features include freeze, overheat, surge protection, and troubleshooting diagnostic codes


  • Technology:Condensing
  • Fuel Source:Natural Gas
  • UEF:0.95
  • ENERGY STAR® Qualified:Yes
  • Digital Display:Yes
  • Max BTUs Input:180,000
  • Emissions:Ultra-Low NOx
  • Water Connection Location:Bottom
  • Water Connection Size:3/4


  • Height:23 5/8"
  • Width:17 3/4"
  • Depth:11 1/4"
  • Weight:58 lbs
*Warranty Not Included*

Product Reviews

Rate This Product:
or Create a Review
(1 Rating, 0 Reviews) Average Rating:
Shopping Cart
Your cart is empty.