Why we love this product.

  • Available for residential and commercial use
  • Versatile unit for indoor or outdoor installations
  • Available in natural gas (NG) or liquid propane (LP)
  • Low NOx emissions of only 20ppm


The NPN-199U is a premium non-condensing tankless water heater designed for both residential and commercial use. It features an exclusive NaviTech stainless steel heat exchanger and burner, ensuring unmatched durability and performance. With its universal design, it can be installed indoors or outdoors, offering flexibility in placement.

NPN-199U Features

  • Exclusive stainless steel heat exchanger for unparalleled durability and performance
  • Universal integrated control panel for easy temperature adjustment and operation monitoring
  • Built-in Air Pressure Sensor (APS) ensures consistent Domestic Hot Water output and proper air/gas ratio
  • Patented NaviTech stainless steel burner for higher efficiency
  • Built-in recirculation control reduces the need for additional components and saves installation time and cost
  • Built-in Water Adjustment Valve (WAV) and Mixing Valve stabilize water temperature during flow changes

Experience the premium features and benefits of the NPN-199U tankless water heater. Its stainless steel construction, advanced control options, and innovative technologies make it a reliable and efficient choice for residential and commercial applications.