Navien Condensing Tankless Water Heaters — Endless Hot Water, Lower Energy Use
Upgrade to the #1 selling high-efficiency condensing tankless water heater brand in North America. Navien’s NPE-2 series delivers powerful performance, long warranties, and smart installation options — perfect for Alberta homes.
Learn more on Navien’s official site
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Endless Hot Water
Tankless design provides continuous hot water for showers, laundry, and dishes — no recovery time.
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High Efficiency
Up to 0.96 UEF efficiency with condensing technology to help cut utility costs.
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Long Warranty
15-year stainless heat exchanger (residential), with parts and labor coverage when registered.
Navien tankless water heater NPE-A2 (Advanced) — Built-In Recirculation for Faster Hot Water
NPE-A2 adds Navien’s patented ComfortFlow® system — an internal recirculation pump + buffer tank — for quicker hot water at the tap and reduced “cold-water sandwich.” It’s homeowner-friendly, efficient, and ideal where hot-water wait times matter.
Tankless water heater
Key Specifications
- Type: Ultra-high efficiency condensing tankless (indoor/outdoor)
- Efficiency: up to 0.96 UEF (model-dependent)
- Recirculation: Built-in pump + buffer tank (ComfortFlow®)
- Heat Exchangers: Dual stainless steel
- TDR: Up to 15:1 turndown
- Venting: 2" PVC up to 75' (3" up to 150'); common vent up to 12
- Gas: ½" line capable up to 24' (site dependent)
- Fuel: Field convertible NG ⇄ LP
Sample Flow Rates (NPE-240A2)
- 11.2 GPM @ 35°F rise
- 8.7 GPM @ 45°F rise
- 5.6 GPM @ 67°F rise
Ask us for AHRI-matched sizing for your fixtures and groundwater temps.
Controls & Warranty
- EZNav™ multi-line control panel
- 15-yr heat exchanger, 5-yr parts, 1-yr labor (residential, with registration)
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ComfortFlow® Recirc
Faster hot water, less waste.
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High UEF
Condensing design helps lower utility bills.
Navien NPE-S2 tankless water heater (Standard) — Proven Performance, Flexible Install
NPE-S2 delivers the same premium condensing tech and stainless steel durability with a simple, value-driven package. It’s a favorite for straightforward replacements and new builds that still demand top efficiency.
Tankless water heater
Key Specifications
- Type: Ultra-high efficiency condensing tankless (indoor/outdoor)
- Efficiency: up to 0.96 UEF; turndown up to 15:1
- Heat Exchangers: Dual stainless steel
- Venting: 2" PVC up to 75' (3" up to 150'); common vent up to 12
- Gas: ½" line capable up to 24' (site dependent)
- Fuel: Field convertible NG ⇄ LP
- Emissions: Low NOx (≈20 ppm)
Controls & Integration
- EZNav™ multi-line control panel
- Cascade up to 32 units (applications vary)
- Optional accessories for recirculation solutions
Warranty
- 15-yr heat exchanger (residential)
- 5-yr parts, 1-yr labor with registration
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Installer-Friendly
2" PVC venting, ½" gas capable; flexible locations.
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Stainless Durability
Dual heat exchangers for long service life.
Get a Navien Tankless water heater Sized Right for Your Home
We’ll evaluate fixture counts, groundwater temps, and venting routes, then recommend the best NPE-2 model for your needs.
Request a Free Estimate
Serving Calgary, Okotoks, and Diamond Valley.
