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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