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Navien

Navien™ NPE-240S2 199,000 BTU Condensing High-Efficiency Gas Tankless Water Heater

4.8 out of 5 · 6 reviews

$1,065.21

SKU NNPE240S2NG · Taxes calculated at checkout

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Delivery
Ships in 1 business day (Mon–Fri), arrives in 1–3 business days (Mon–Fri). Order before 11:00 PM CST (UTC −6) to ship the next business day.
Returns
90 days from delivery, defective or not. No restocking fee. Approved refunds land within 7 business days.
Warranty
Three-Year Limited Warranty against manufacturing defects under normal use conditions — or the manufacturer's term where that is longer.

Questions before you order? Call +1 575 271 0768

Product details

This S2 model tops the series at 199,000 BTU and runs on natural gas. The condensing design keeps pulling energy out of the flue gas after combustion is done, so less heat leaves through the vent than with a storage tank or a non-condensing tankless heater.

Because the exhaust leaves cool, venting is SCH 40 2-inch pipe rather than metal, which usually cuts both the material bill and the labor hours. Dual stainless steel heat exchangers, 20 ppm NOx, and a field-convertible gas system are part of the package, and a half-inch gas line will serve runs as long as 24 feet. Built for interior mounting.

Customer reviews

What people say about buying from us

4.8 out of 5 from 6 store reviews. These cover the buying experience across our catalog, not this product alone.

  • Arrived early and packed properly

    Ordered on a Thursday and it was on a pallet outside my garage Monday morning. Every board was numbered and the hardware came in labelled bags, so we did not have to guess at anything. Two of us had it standing by Sunday afternoon.

    Marcus T.· Round Rock, TXVerified order

  • Lumber quality is genuinely good

    I have built two of these from other brands and returned one for warped boards. Not a single warped piece in this kit. The kids have been on it every day since we finished it.

    Dana R.· Columbus, OHVerified order

  • Correct weight, factory sealed, clean invoice

    Ordered Thursday, on the truck Friday. Cylinder was sealed and the weight was exactly right. The invoice had everything my bookkeeper needed, which is more than I can say for the supplier I was using before.

    Victor A.· Hialeah, FLVerified order

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