Navien NPE-210A2 – Condensing Tankless Water Heater – 180,000 BTU
The Navien NPE-210A2 is a high-efficiency condensing tankless water heater engineered for both residential and commercial applications. With an input capacity of 12,000 to 180,000 BTU per hour and a Uniform Energy Factor of 0.95, it provides dependable hot water while maintaining low energy costs. The unit supports up to 10.1 gallons per minute at a 35°F rise, making it ideal for homes with multiple fixtures or businesses requiring steady hot water. Its compact, wall-hung design supports indoor or outdoor installation, and it is field convertible between natural gas and propane.
Designed with Navien’s ultra condensing technology and dual stainless steel heat exchangers, the NPE-210A2 also includes built-in recirculation via ComfortFlow® technology, minimizing hot water wait times. The unit features an intuitive EZNav™ control panel with built-in HotButton™ functionality, cascading capability for up to 12 common-vented units, and ½” gas line compatibility up to 24 feet. It’s compatible with NaviLink™ for remote control and can support space heating through the optional H2Air Kit.
Features
180,000 BTU/h input with 0.95 UEF
Up to 10.1 GPM at 35°F temperature rise
Dual stainless steel heat exchangers
Ultra condensing efficiency
ComfortFlow® recirculation with built-in buffer tank and pump
EZNav™ multi-line control panel with HotButton™
Low NOx emissions (20 ppm)
Field convertible gas system (NG/LP)
Indoor or outdoor wall-hung installation
1/2″ gas line capable up to 24 feet
Direct venting: 2″ up to 75 feet, 3″ up to 150 feet
Cascading and common venting for up to 12 units
Compatible with NaviLink™ remote control system
3/4″ NPT hot, cold, and gas connections
Applications
Residential homes with high hot water demand
Light commercial water heating
Multi-bathroom households or small businesses
Installations needing gas and venting flexibility
Cascade-ready systems with optional space heating
 
Navien NPE-A2 simply a smarter hot water system for today’s life styles
Navien…the proven leader in condensing tankless, makes it even easier to install and set up with the new NPE-A2 series
Built-in recirculation system
Navien’s patented ComfortFlow® system is the first to include a buffer tank, recirculation pump and fine-tuned controls into a tankless water heater, resolving the cold-water sandwich effect* and issues of minimal flow rates commonly found in other tankless water heaters.
* The “cold-water sandwich effect” is the undesired introduction of cold water into the hot water supply line on occasions of frequent on/off operations. (Measure Guideline : Transitioning to a Tankless Water heater, DOE, Sept.2012).
 
The built-in recirculation pump allows the NPE-A2 to recirculate water either through an external recirc line or through existing supply lines while using NaviCirc®, without the need for external pumps or controls.
 
 
Multi-line control with built-in intuitive software 
Navien’s new backlit EZNav™ control panel uses simple text and icons to make set up, operation status and troubleshooting faster and easier than ever before.
Self-diagnostics.
Displays temperature and water flow rate.
Displays status of cascade operation.
Convertible display from °F to °C.
User Friendly Interface.
Easy setup.
 
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