Navien NPE-240A2 199,000 BTU High Efficiency Tankless Water Heater

🔥 Navien NPE-240A2-NG Tankless Water Heater – 199,000 BTU with Built-In Recirculation Pump

The Navien NPE-240A2-NG is a premium, high-efficiency condensing tankless water heater designed for homes and commercial spaces that demand nonstop hot water and maximum energy savings. With up to 199,000 BTU/h output and 11.2 GPM flow capacity, it effortlessly supplies multiple fixtures at once — ideal for large households or light commercial use.

Engineered for performance and convenience, this unit features a built-in recirculation pump, dual stainless steel heat exchangers, smart Wi-Fi compatibility, and a compact wall-mounted design. It’s field convertible for propane, venting-flexible, and equipped with advanced controls and diagnostics for efficient, safe operation.

⚡ At a Glance

• 🔥 199,000 BTU Heat Output – Powerful enough for large homes & businesses
• 🚿 11.2 GPM Flow Rate – Handles multiple showers and appliances at once
• 🌀 Built-In Recirculation Pump – Faster hot water, less waste
• 📶 Wi-Fi Ready – Smart monitoring and control with optional module
• 🔁 Natural Gas or Propane – Easily convertible with included kit
• 🏡 Indoor or Outdoor Installation – Versatile venting options
• 📏 Space-Saving Design – Wall-hung unit with zero-clearance venting

⭐ Best for homes with 3+ bathrooms or high-demand commercial setups. Ships fast from the U.S. with expert support available.

✅ Key Features

• Up to 199,900 BTU/h heating capacity (natural gas or propane)
• Ultra-condensing stainless steel dual heat exchangers for maximum efficiency and durability
• Built-in recirculation pump for faster hot water delivery and water savings
• Smart EZNav control panel with intuitive interface and built-in HotButton panel
• Cascading capable – link up to 12 units for larger applications
• Low NOx emissions (20ppm) for environmental compliance

📦 What’s Included

• (1) Navien NPE-240A2 Unit
• (1) Conversion Kit (NG/LP)
• (1) Wall Mounting Bracket
• (4) Tapping Screws & Anchors
• (2) 2" Vent Termination Caps
• (4) 2" Wall Flanges

📐 Performance & Flow Rates

• UEF (Efficiency): 0.95
• Flow Rate @ 35°F rise: 11.2 GPM
• Flow Rate @ 45°F rise: 8.7 GPM
• Flow Rate @ 67°F rise: 5.6 GPM
• Minimum Activation Flow: 0.5 GPM (down to 0.01 GPM with optional setting)

🔧 Installation & Compatibility

• Venting: 2" or 3" PVC, CPVC, polypropylene, or stainless steel
• Installation: Indoor or outdoor wall-hung
• Clearances: 0" to combustibles (zero-clearance design)
• Altitude: Certified for use up to 10,100 ft
• Gas Type: Field convertible between natural gas and propane

📊 Technical Specifications

• Dimensions: 17.3" W x 27.4" H x 13.2" D
• Weight: 77 lbs (34.9 kg)
• Gas Supply Pressure (NG): 3.5"–10.5" WC
• Gas Supply Pressure (LP): 8"–13" WC
• Water Pressure Range: 15–150 PSI
• Power Supply: 120V AC, 60Hz
• Max Power Consumption: 200W (350W with external pump)

🛡️ Safety Features

• Flame rod detection
• APS (air pressure switch)
• Water temperature high-limit switch
• Exhaust temperature sensor
• Power surge fuse & burner high-limit fuse
• Vent installation detector (VID)

💡 Ideal Applications

• Large residential homes with multiple bathrooms
• Light commercial applications (restaurants, offices, retail)
• Contractor installations and high-efficiency upgrades

Built for performance, efficiency, and convenience — the Navien NPE-240A2 delivers continuous hot water with smart features and unmatched reliability.

❓ Frequently Asked Questions (FAQ)

1) What type of venting can I use for the NPE-240A2?
The NPE-240A2 supports both 2” and 3” vent configurations using approved materials:

• 2" venting: Up to 75 feet, max 6 elbows (subtract 8 ft for each 90° elbow)
• 3" venting: Up to 150 feet, max 8 elbows (subtract 5 ft for each 90° elbow)

Approved vent materials:

• PVC Schedule 40
• CPVC Schedule 80
• UL-approved Polypropylene
• Stainless steel (Category II, A/B/C)

2) Does the NPE-240A2 include a remote or control interface?
Yes. The unit includes a built-in EZNav™ multi-line digital control panel, which allows for temperature adjustment, diagnostics, and system settings. For added convenience, the unit also supports Navien’s Wi-Fi module (sold separately) for mobile control via smartphone or tablet.

3) Can the NPE-240A2 be installed outdoors?
Yes. The unit can be installed outdoors when paired with the Navien Outdoor Vent Kit (sold separately). It’s weather-resistant when properly installed and mounted on an exterior wall.

4) Is the NPE-240A2 gas field convertible?
Yes. It comes factory-configured for Natural Gas (NG), and includes a conversion kit to switch to Liquid Propane (LP). Always consult a licensed technician when converting fuel types.

5) What kind of maintenance does the NPE-240A2 require?
Routine maintenance includes:

• Flushing the heat exchanger annually to prevent scale buildup
• Cleaning the inlet water filter
• Inspecting the venting system for blockages or leaks
• Checking for error codes via the control panel

It’s recommended to have the unit professionally serviced at least once a year for optimal performance and longevity.

6) What is the warranty on the Navien NPE-240A2?
Navien offers one of the best warranties in the industry:

• 15-year limited warranty on the heat exchanger (residential)
• 5-year warranty on parts
• 1-year labor warranty (when installed by a licensed pro)

Full warranty details are available in the installation manual or at navieninc.com.