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Navien NPE-240S 199,000 BTU Condensing PremiumGas Tankless Water Heater


Navien NPE-240S 199,000 BTU Condensing PremiumGas Tankless Water Heater

Navien has been pushing the boundaries of efficiency for 25 years. The NPE-240S is a result of their dedication to providing an effective and green water heating unit. The NPE-240S and all Navien models utilize condensing technology which captures additional heat lost by typical water heaters. The Navien NPE-240S's energy factor is superior to both traditional water heaters and noncondensing tankless models. Reduced vent temperatures due to this condensing technology allow you to use PVC venting, which saves you money and contributes to the ease of installation. The Navien NPE-240S has excellent technology for reducing your heating costs and carbon footprint.

Product Features:
Help the Environment
The Navien NPE-240S will reduce your home's impact on the environment. Eco Pre-mixed Burners reduce CO and NOx emissions by combining gas heating and air before ignition. The result is a nearly 75% reduction in polluting emissions. In fact, an installed Navien NPE-240S reduces CO2 by the same amount as 31 cypress trees.

Incredible Efficiency
Navien products reduce energy consumption without sacrificing comfort. Their tankless models, such as this one, only heat water when you need it, reducing energy expenditure. Also, the NPE-240S uses a secondary heat exchanger to transform condensation and exhaust into additional heat. This reduces the ventilation temperature and increases the energy factor. The NPE-240S's efficiency translates directly into savings on operation costs for you!

Tremendous Durability
The Navien NPE-240S uses stainless steel for the Eco Pre-mixed Burner as well as both heat exchangers. This prevents corrosion and increases the lifespan of your NPE-240S. 

A Product You Can Trust
Navien products are recognized by an array of organizations. The NPE-240S is certified by Energy Star; the Air-Conditioning, Heating and Refrigeration Institute; the Canadian Standards Association; and the National Sanitation Foundation.

Product Includes:

  • (1) Wall Mounting Bracket
  • (4) Tapping Screw & Anchor
  • (2) Vent Terminator
  • (4) Wall Flange

Product Specifications:

General Data
Fuel Source Natural Gas
Vent Type Direct Vent
Storage Type Tankless
Installation Location Indoor/Outdoor
Gas Conversion Kit Included
Performance Data
Flow Rate at 45F Temperature Rise (GPM) 8.7
Maximum Input Capacity (BTU) 199900
Minimum Input Capacity (BTU) 19900
Energy Factor 0.99
Minimum Flow Rate (GPM) 0.5
Electrical Data
Voltage (Volts) 120
Phase 1
Frequency (Hertz) 60
Primary Vent Pipe Diameter (Inches) 3
Gas Connection Size (Inches) 3/4
Cold Water Inlet (Inches) 3/4
Hot Water Outlet (Inches) 3/4
Product Height (Inches) 27 2/5
Product Width (Inches) 17 3/10
Product Depth (Inches) 13 1/5
Product Weight (Pounds) 75
Energy Star Listed Yes
CSA Listed Yes
AHRI Certified Yes
NSF Listed Yes

Note: Navien is not affiliated with and does not sponsor, endorse or support Hebron Consumer Products or this website.

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Product Reviews

  1. Damaged, but working. 4 Star Review

    Posted by on 2nd Mar 2021

    The initial arrival was to be on a Thursday, but item did not make it to the house until Friday. Pretty sure it was not Mytanklesswaterheaterstore.com's fault, but Fedex. After opening the outer box, it looked like the water heater had been dropped. The front panel was dented and it looked as if the it was dropped on the lower right corner hard enough that the heat exchanger inside dented the front panel from the inside. After careful examination, all seemed to be in working order, so installation was completed. Unit works perfectly with no problems other than cosmetic.

  2. Top notch product 5 Star Review

    Posted by on 9th Feb 2021

    Well built quality product with an installation manual just outstanding.
    Very straight forward installation without a complicated cryptic instructions to figure out.
    I installed it myself in 2 days: day 1- built a small wall to hang it, got it hung, and had it vented. About 4 hours total. Day 2-piped the gas line, removed the existing hot water heater, and piped into the tankless hot water heater. Couple of hours for a parts run and I had hat water by 1730. That was with starting the gas piping at 1030.

  3. она ищет его 4 Star Review

    Posted by on 22nd Feb 2017

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