Navien Tankless Water Heaters

Description

Standard Features
Ultra-efficient condensing tankless gas water heater for residential or light commercial use
Energy Star certified—up to 0.96 UEF for maximum energy savings
Compact, wall-mounted design saves floor space and supports flexible installation
Field convertible for use with natural gas (NG) or liquid propane (LP)
Available in four sizes: 120,000, 150,000, 180,000, and 199,900 BTU/hr
Delivers up to 5.8 GPM (22 L/min) depending on model and temp rise
Dual stainless steel heat exchangers for corrosion resistance and extended lifespan
Built-in EZNav™ digital control panel with backlit display and simple navigation
Self-diagnostics and real-time flow/temp display for faster setup and service
Turn-down ratio (TDR) up to 15:1—adjusts output based on real demand for energy savings
Smart home compatible—optional NaviLink™ WiFi module enables remote control
Quiet operation with low NOx emissions
Meets SCAQMD 1146.2 emission standards
Integrated safety features including flame sensor, exhaust temp limiter, and gas leak detection
Certified for indoor installation with direct venting options
CSA and Energy Star listed

Specifications

Efficiency
UEF Rating: Up to 0.96
Energy Star Certified: Yes
Turn-Down Ratio: Up to 15:1
Emissions: Ultra-low NOx compliant

Performance
Max BTU Input: 199,900 (model NPE-240S2)
Hot Water Output: Up to 5.8 GPM at 36°C (65°F) temp rise
Fuel Type: Field convertible—natural gas or propane
Altitude Rating: Up to 10,100 ft (varies by model/configuration)
Water Connections: ¾” NPT

Technology
EZNav™ backlit digital control panel with simple, intuitive interface
Built-in self-diagnostics for easy service and setup
Dual stainless steel heat exchangers for improved durability
Optional NaviLink™ WiFi remote access for full control via smartphone
Digital display shows flow rate and temperature in real time

Serviceability
Wall-mounted design for easy access
Field convertible fuel source (NG/LP)
Built-in diagnostics and flow/temp monitoring
Accessible components and panel-mounted interface for rapid troubleshooting

Requirements
Vent Pipe: 2″ or 3″ PVC, CPVC, or polypropylene
Power: 120V standard outlet (cord required, not always included)
Venting: Direct vent—horizontal or vertical configurations

Aesthetics
Modern white case with compact footprint
Wall-hung for clean installs and optimal space usage
Uniform dimensions across models: 27.4″ H x 17.3″ W x 13.2″ D