NPE-240S2 – Condensing Tankless Water Heater – 199,000 BTU
Navien

NPE-240S2 – Condensing Tankless Water Heater – 199,000 BTU

Model NPE-240S2Tankless Water Heaters

$212.90Sales tax calculated at checkout

Ships from Orlando

Free tracked delivery · 3–5 business days after dispatch to most US addresses

Bundle & Save Mix & match anything under $550 · taken off in the cart, no code

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2 items · 5% off$378.64$398.57
  • Free tracked delivery3–5 business days after dispatch to most US addresses; 5–8 to Alaska, Hawaii and US territories.
  • 30-day returnsUnused, in its packaging. Faulty or damaged on arrival, we pay the return; a change of mind, you do.
  • Secure checkoutPayment is handled and encrypted by Shopify Checkout.

Overview

Navien NPE-240S2 – Condensing Tankless Water Heater – 199,000 BTU

The Navien NPE-240S2 is a premium condensing tankless water heater built to deliver reliable, high-capacity hot water for residential or commercial applications. With a powerful input range of 13,300 to 199,900 BTU/h and an impressive 0.96 UEF, it’s ENERGY STAR® certified for efficiency and performance. This unit delivers up to 11.2 gallons per minute at a 35°F temperature rise and operates at flow rates as low as 0.5 GPM, making it ideal for both large-volume and low-demand applications.

Designed for indoor or outdoor wall-hung installation, the NPE-240S2 features ultra condensing technology and durable dual stainless steel heat exchangers. It includes the intuitive EZNav™ control panel with a built-in HotButton™ interface and is compatible with NaviLink™ for remote access. The unit is field convertible between natural gas and propane and supports cascading of up to 12 units for expanded demand. With ultra-low NOx emissions and 1/2″ gas line compatibility up to 24 feet, it offers maximum flexibility for a wide range of installations.

Features

  • 199,900 BTU/h input with 0.96 UEF efficiency
  • Up to 11.2 GPM at 35°F temperature rise
  • Dual stainless steel heat exchangers
  • Ultra condensing performance
  • Low NOx emissions (20 ppm)
  • Minimum flow rate: 0.5 GPM
  • Indoor or outdoor wall-hung installation
  • Field convertible gas system (NG or LP)
  • EZNav™ control panel with HotButton™ interface
  • Cascading capable with up to 12 units
  • Common venting capable
  • 1/2″ gas pipe compatible up to 24 ft
  • 2″ venting up to 60 ft, 3″ venting up to 150 ft
  • 3/4″ NPT connections for gas, hot, and cold water
  • 120V, 60Hz, single-phase power supply
  • CSA Listed, AHRI Certified, ENERGY STAR®, NSF Listed

Applications

  • Residential homes with high simultaneous water demand
  • Light commercial hot water systems
  • Indoor or outdoor installations needing compact, wall-mounted design
  • Projects requiring gas and venting flexibility
  • Multi-unit cascade-ready setups

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Good to know

When will it arrive?

Orders placed before 2:00 pm ET on a business day ship the same day from Orlando; Saturday orders before 1:00 pm ET go out that afternoon. After that, it ships the next business day.

Delivery takes 3–5 business days after dispatch to most US addresses, and 5–8 to Alaska, Hawaii and US territories.

Can I return it?

Yes — tell us within 30 days of delivery and send it back unused, in its packaging, for a full refund. If it is faulty, damaged in transit or not as described, we pay the return; if you have changed your mind, the return shipping is yours, and we quote it before anything is booked.

Read the full returns policy

How does Bundle & Save work?

Every item marked Bundle & Save counts (single items under $550), and you can mix them: 2 items save 5%, 3 save 10%, 5 or more save 15%. The saving is taken off automatically in the cart — there is no code to enter.

Do I need to be in for the delivery?

Orders over $150 ship with signature on delivery, so a missing parcel can be claimed. Your tracking number is emailed the moment the label prints.

NPE-240S2 – Condensing Tankless Water Heater – 199,000 BTU $212.90

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