Navien NPE-180S2, 8.4 GPM Condensing Tankless Water Heater

Features:

• Condensing Ultra High Efficiency
• 2″ or 3″ PVC, CPVC or Polypropylene Venting
• Natural Gas or Propane (LP)
• 8.4 GPM at 35F
• 150,000 BTUh
• Indoor or Outdoor (Vent cap sold separately)
• ½ gas pipe capable up to 24′
• Field convertible gas system
• Low NOx emissions (20ppm)
• Compatible with PVC venting
• SCH 40, 2″ venting up to 60′
• Cascading capable
• Dual primary and secondary stainless steel heat exchangers