NPE-210S2 – Condensing Tankless Water Heater – 180,000 BTU

Navien NPE-210S2 – Condensing Tankless Water Heater – 180,000 BTU

The Navien NPE-210S2 is a high-efficiency condensing tankless water heater designed to deliver continuous hot water in both residential and commercial settings. With input capacity ranging from 12,000 to 180,000 BTU/h and a Uniform Energy Factor of 0.96, it provides powerful, energy-saving performance. It delivers up to 10.1 gallons per minute at a 35°F rise and is ENERGY STAR certified for its high efficiency. Compact and wall-mounted, it installs indoors or outdoors and includes a field-convertible gas system with a conversion kit.

This model uses dual stainless steel heat exchangers for long-term durability and ultra condensing operation. It supports cascading with up to 16 units via Navien’s Ready-Link® technology and allows common venting with up to 12 units. The NPE-210S2 includes the EZNav™ multi-line control panel and built-in HotButton™ recirculation control, and it’s compatible with remote access via NaviLink™. It operates at elevations up to 10,100 feet and can use a 1/2″ gas line for runs up to 24 feet, providing installation flexibility across a range of applications.

Features

• 180,000 BTU/h input with 0.96 UEF
• Up to 10.1 GPM at 35°F temperature rise
• Dual stainless steel heat exchangers
• Ultra condensing efficiency
• Low NOx emissions (20 ppm)
• ENERGY STAR certified
• Field convertible gas system (NG or LP, kit included)
• Indoor or outdoor wall-hung installation (outdoor cap required)
• EZNav™ multi-line control panel
• Built-in HotButton™ for recirculation control
• Cascading capable (up to 16 units)
• Common venting up to 12 units
• 1/2″ gas line capable up to 24 feet
• Vent lengths: 2″ up to 75 ft, 3″ up to 150 ft
• Remote control capable (NaviLink™ compatible)
• Operates at elevations up to 10,100 ft

Applications

• Residential and commercial water heating
• Multi-bathroom homes or light commercial buildings
• Indoor or outdoor installations with limited space
• High-efficiency upgrades or replacements
• Multi-unit systems needing cascade or common venting capability

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