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Navien Water Heaters

Navien Water Heaters

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NPE Series Premium Condensing Tankless Gas Heater

NPE-A Advanced high-efficiency tankless water heater technology for residential and commercial applications. Exclusive ComfortFlow technology with internal buffer tank and recirculation pump maintains a steady stream of heated water to eliminate cold water sandwiches and issues of minimum flow rates.

NPE-S Standard ultra condensing technology without ComfortFlow technology.

  • Ultra Condensing Efficiency
  • Two Stainless Steel Heat Exchangers – Provides longer life expectancy as they are highly resistant to corrosion and erosion compared to copper heat exchangers.
  • Low NOx Emissions (≤ 20ppm) – New metal fiber burner is designed to deliver a consistent air/gas mixture improving combustion efficiency.
  • 2 in. PVC, CPVC, Polyprophylene Venting Up To 60 ft.
  • Utilizes Existing 1/2 in. Gas Line – The negative pressure gas valve and fan with dual venturi operation allows for better adaptability to low gas pressure applications.
  • Field Convertable: NPE models allow for easy convertibility from NG to LP.
  • Less Water Pressure Drop – Simple modular for water path minimizes water pressure drop.
  • Front Panel Command Center – with self-diagnostics.

MODEL Configuration Max
MBtuH
Min
MBtuH
Flow Rate
GPM
UEF Temp.
Range
Dimensions
HxWxD
Weight
Lbs.
NPE-180S   16.0 0.0 3.80 1.00   27.4×17.3×11.4 67
NPE-210S   19.9 0.0 4.60 1.00   27.4×17.3×13.2 75
NPE-240S   19.9 0.0 5.10 1.00   27.4×17.3×13.2 75
NPE-180A   16.0 0.0 3.80 1.00   27.4×17.3×11.4 75
NPE-210A   19.9 0.0 4.60 1.00   27.4×17.3×13.2 82
NPE-240A   19.9 0.0 5.10 1.00   27.4×17.3×13.2 82

Warranty Information

  • Heat Exchanger for 180 months –
  • All Parts for 60 months –
  • Limited Labor for 12 months –

Available Documents

What To Expect

Discover the Southside Heating & Air Conditioning Difference

Family Owned and Operated

45+ Years in business

certified and trusted technicians

fast, reliable service

Affordable financing options

transparent pricing

Family Owned and Operated

45+ Years in business

certified and trusted technicians

fast, reliable service

Affordable financing options

transparent pricing

father and 2 children playing on scooter and bike in doorway of their home smiling
father and 2 children playing on scooter and bike in doorway of their home smiling
Our Reviews

See What Your Neighbors Are Saying

I am very happy with the service I obtain from Southside Heating & Air. If I need a tech onsite. The tech is always courteous and provides me with the info needed to resolve the issue promptly.

David S.

David S.

Very professional technicians, knowledgeable, quick to figuring out and fixing my problem. Called me back right away the next morning after I left a message the night before when they were closed. Plus they have the best customer service.

Scott O.

Scott O.

Great experience with Southside Heating and AC. Very much enjoyed working with Mark. They were on time and completed the work the same day for new furnace and AC. No surprises with quoted price to actual. Thanks.

Mike O.

Mike O.

Donald Siefert helped me with the filter in my air conditioner. I had bought a new one a couple months ago and had finally tried to replace it by myself, I didn’t know if I put it in right so I gave Southdside a call and…

Julia S.

Julia S.

Extremely satisfied with Southside. After we were rescheduled/delayed/no-call-no-showed three times by the company that installed HVAC for my new build business, Southside came out to help within HOURS. Super professional, did a very thorough job, showed up exactly when they said they would and made sure…

Rachel J.

Rachel J.

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