Navien NPE-180S2 150,000 BTU Condensing High-Efficiency Gas Tankless Water Heater

  • 2" PVC up to 75 feet and 1/2" gas up to 24 feet
  • Common vent up to 12 units
  • Natural gas or liquid propane (kit included)
  • Indoor or outdoor installs
  • Dimensions: 17.3" W x 27.4" H x 13.2" D

Save $269.42
NavienSKU: NNPE180S2NG

Retail price:Wholesale price:
Wholesale price$1,616.48 Sale price$1,347.06

As low as $33.34 per month


Navien has been pushing the boundaries of efficiency for 25 years. The NPE-180S2 and all Navien models utilize condensing technology which captures additional heat lost by typical water heaters. Its energy factor is superior to traditional water heaters and non-condensing tankless models. Reduced vent temperatures due to this condensing technology allow you to use PVC venting, which saves you money and improves the ease of installation. The Navien tankless water heater has excellent technology for reducing your heating costs and carbon footprint.


  • ½" gas pipe capable of up to 24 feet
  • Field convertible gas system
  • Ultra condensing efficiency
  • Dual stainless steel heat exchangers
  • Low NOx emissions (20ppm)
  • SCH 40, 2" venting up to 75 feet
  • Cascading capable of up to 32 units
  • EZNav multi-line control panel
  • Built-in HotButton control panel
  • Common vent up to 12 units
  • The NPE-S2 series does not have recirculation


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


Residential: 1-year labor, 3-year parts, and 5-year heat exchanger
Commercial: 1-year labor, 3-year parts, and 3-year heat exchanger



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