NPE-240S2 – Condensing Tankless Water Heater – 199,000 BTU
$457.37
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Description
NPE-240S2 – Condensing Tankless Water Heater – 199,000 BTU
Professional Grade · Ships from the USA
Genuine, brand-new equipment with full manufacturer warranty.
High-efficiency design that cuts running costs year after year.
Ships from the United States, leaves our warehouse in 24 hours.
Single Unit
- • Professional Grade
- • Genuine Product
- • Ships in 24 Hours
- • Secure Checkout
- • US-Based Support
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
PNAV000037
Find answers to common questions about our products and shipping.
Who can buy refrigerants from MEIOSYS?
Refrigerants are sold only to EPA Section 608 or 609 certified technicians. You confirm your certification number at checkout. See our Refrigerant Sales Policy.
How fast do you ship?
Orders leave our US warehouse within 24 hours (next business day). Most deliveries arrive in 3–5 business days depending on your state.
Are the cylinders new and factory sealed?
Yes. All refrigerant cylinders are 100% virgin, new and factory sealed. Bulk packs and pallets ship strapped on pallets.
Do you ship to all US states?
Yes, we ship to all 50 states including California. Hazmat and freight charges, if any, are shown at checkout.
What payment methods do you accept?
All major credit cards. Every transaction is encrypted and secure.
Can I return a cylinder?
Unopened, factory-sealed cylinders can be returned within 30 days. See our Refund & Returns Policy.

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