Mid-range Water Heater
NPE-S2 Standard Condensing Tankless Water Heater
Model NPE-150S2 / NPE-180S2 +2
Up to 0.96 UEF and up to 15:1 turndown. Dual stainless steel heat exchangers.
- UEF
- 0.93
- Max flow
- Up to 11.2 GPM
Navien Water Heaters
Navien NPE-A2 Advanced Condensing Tankless Water Heater
Model NPE-180A2 / NPE-210A2 / NPE-240A2
Premium line 
ComfortFlow built-in buffer tank and recirculation pump. Dual stainless steel heat exchangers.
Key specifications
- UEF
- 0.95 (all A2 models)
- Gas input (BTU/h)
- NPE-180A2: 10,000-150,000; NPE-210A2: 12,000-180,000; NPE-240A2: 13,300-199,900
- Turndown ratio
- up to 15:1
- Flow rate
- 35°F rise: 8.4 / 10.1 / 11.2 GPM (180A2/210A2/240A2); 67°F rise: 4.3 / 5.1 / 5.6 GPM (UEF-model values per spec sheet)
- Minimum flow
- 0.5 GPM (1.9 L/m), < 0.01 GPM (0.04 L/m) option for A2 models
- Venting
- 2 in PVC up to 75 ft or 3 in up to 150 ft; PVC, CPVC, approved polypropylene, stainless steel; direct vent, indoor/outdoor
- Fuel
- Natural gas, field-convertible to propane
- Warranty
- 15 yr heat exchanger; 5 yr parts; 1 yr labour
Specifications from Navien. Ratings vary by model size and matched equipment.
Features
- ComfortFlow built-in buffer tank and recirculation pump.
- Dual stainless steel heat exchangers.
- 2" PVC venting up to 75 feet.
- Cascade up to 32 units with Ready-Link; common vent up to 12 units.
Why buy from Lancaster
Installed right, backed for the long run
- Correctly sized for your home with a proper heat-loss calculation
- Licensed, factory-trained installers since 1955
- Help with rebates and Financeit financing
- Maintenance plans and 24/7 emergency service
More Navien water heaters
- Mid-range
Water Heater
NWP500 Heat Pump Water Heater
Model NWP500-50 / NWP500-65 +1
Up to 4.05 UEF. Stainless steel tank with no anode rod required.
- Tank
- Up to 80 gal
- First hour
- 65 gal
Compare other water heaters
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Water Heater
Bradford White Atmospheric Vent Residential Gas Water Heater (Defender Safety System)
Model RG130T6N / RG230T6N +9
Defender Safety System flammable vapour ignition resistant design with ScreenLok flame arrestor. ICON System gas control with no need for external electricity.
- UEF
- 0.54
- Tank
- 30 gal
- First hour
- 46 gal
Water Heater
Bradford White TTW Power Vent Residential Gas Water Heater
Model RG1PV40S6N / RG1PV50S6N +7
Defender Safety System. ICON System intelligent gas control eliminates constant burning pilot.
- UEF
- 0.68
- Tank
- 40 gal
- First hour
- 75 gal
Water Heater
Bradford White Power Direct Vent Residential Gas Water Heater
Model RG2PDV40S6N / RG2PDV50S6N +2
Closed combustion venting system for tightly insulated homes. Defender Safety System.
- UEF
- 0.68
- Tank
- 40 gal
- First hour
- 75 gal
Water Heater
Bradford White Direct Vent Residential Gas Water Heater
Model RG2DV40S6N / RG2DV50S6N +1
Co-axial (pipe-in-pipe) closed combustion vent. ICON System gas control with no need for external electricity.
- UEF
- 0.60
- Tank
- 40 gal
- First hour
- 62 gal
Financing for new home systems
Spread the cost with monthly payments
A new furnace, air conditioner, heat pump or water heater doesn't have to wait. Start saving on energy now and pay over time.
- Get your free, itemized quote
- Apply online with Financeit
- Choose a monthly plan that fits
Talk to a Lancaster HVAC expert
Licensed, certified technicians serving Hamilton, Niagara and surrounding areas since 1955. Emergency service available 24/7.