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Navien Premium Condensing Tankless Gas Water Heater (NPE-A)

model img ENLARGE

NPE-A series

Max Input : 150,000 – 199,900 BTU/H
Indoor/Outdoor Installation

  • ½” gas pipe capable up to 24’
  • Field convertible gas system
  • Ultra condensing efficiency
  • Dual stainless steel heat exchangers
  • Low NOx emissions (≤20ppm)
  • SCH 40, 2” venting up to 60’
  • Cascading capable
ComfortFlow Navien

navien Premium Condensing is ideal for tank replacement

  • 2"PVC, CPVS, Polypropylene venting up to 60'

    Low exhaust gas temperature allows PVC, CPVC, and Polypropylene vent systems, significantly reducing installation costs.
    2" venting option allows for a flue to be pulled through the existing vent. No additional holes need to be drilled for venting.
    3" vents can be used to 150' with standard 2" X 3" adapters.

  • Better Adaptability to Gas Systems

    The Negative Pressure Gas Valve and Fan with Dual Venturi operation allows for better adaptability to low gas pressure applications. This industry leading technology makes it possible for the NPE to be installed with 1/2" Gas Lines up to24'.
    Easy residential tank replacements.

  • Field Convertible

    With the Negative pressure gas Valve and the Dual Venturi system, the NPE allows for easy field convertibility from NG to LP.

  • Ease of Installation

    With our mounting bracket system we make it easy for only one person to complete the whole installation

  • Modular Design for Durability & Reliability

    Improved durability and reliability with the use of high quality engineering plastic(PPS) and reliable parts.
    Simple modular design for water path minimizes water pressure drop.
    The improved water way design allows for easier maintenance and service to be performed in the field.


  • Built-in Recirculation System

    Eliminate Cold Water Sandwich! Reduce Waiting Time!

    • The internal recirculation system help maintain set temperature.
    • External recirculation system can be set up.
    • "Must have a return line in the building"
    • Internal/External recirculation can easily be set up with the integrated controller.
    • Saves water with the reduced time to get hot water.
    • Saves money with built-in recirculation pump.
    • Intelligent pre-heating function.
  • A Buffer Tank
  • B Circulation Pump
  • C Check Valve
  • D Flow Adjustment Valve

title icon The Ultimate in Energy Efficiency with ComfortFlow

  • Ultra Condensing Technology

    Navien's Condensing Technology offers high energy efficiency.
    The ultimate efficiency allows money and energy savings over
    a tank type water heater and a traditional non-condensing
    tankless water heater.

  • Two Stainless Steel Heat Exchangers

    Two Stainless Steel Heat Exchangers provide longer life expectancy as they are Highly resistant to corrosion and erosion compared to copper heat exchangers. Stainless steel reduces minerals deposits, while being highly resistant to stress corrosion cracking.

title icon Offers the ultimate hot water experience


Multiple units can be connected
in parallel for larger applications.

  • Navien's units have built in controls for multi-unit system allowing easy setting.
  • No extra control boards are required, reducing installation costs.
  • Easy wiring between units and easy setting of the parent and child for multi-unit system.
  • 16 units can be linked as one group and cascade as many groups as you need.
  • Cascading allows for added redundancy insuring on-demand hot water in all situations.
  • Small and compact wall-hung design allows multi-unit system even in a confined area.
  • Used for hotels, schools, hospitals, beauty shops, restaurants, health centers, and more.
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    Front Panel Command Center

    • Self-diagnostics
    • Displays temperature and water flow rate
    • Displays status of cascade operation
    • Convertible display from °F to °C
    • User Friendly Interface
    • Easy setup
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    Remote Control (Optional)

    • Hot water temperature control
    • Recirculation timer setting
    • Function to set the number of initial activating water heaters for cascade system
    • Temperature set-up for cascade system with external tanks.