Navien NPE-150S2 Condensing Tankless Water Heater 120,000 BTU – Natural Gas/Propane, Indoor/Outdoor
$474.99
The GIAHAO Guarantee
GIAHAO LLC · Quality garden tools
Free On-Site Assembly Included
Our nationwide network of certified local technicians will assemble your order at your address, ready to use.
Authorized Retailer · US Seller
100% genuine stainless steel garden tools from authorized U.S. distributors
Official Manufacturer Warranty
Every product includes the full manufacturer's warranty
Secure Payment
Verified U.S. business · SSL encrypted checkout
90-Day Return Policy
Easy returns, no restocking fees. See policy page
Description
Navien NPE-150S2 Condensing Tankless Water Heater 120,000 BTU – Natural Gas/Propane, Indoor/Outdoor – genuine Navien equipment, sold and shipped by GIAHAO LLC. Engineered for reliable performance, high efficiency and long service life, this unit is backed by the manufacturer warranty and ships brand new in original factory packaging.
Product Description
The Navien NPE-150S2 is a high-efficiency condensing tankless water heater with premium features and benefits. It features a field convertible gas system, ultra condensing efficiency, and dual stainless steel heat exchangers. It also has low NOx emissions (20ppm) and SCH 40, 2″ venting up to 75′. The unit is cascading capable and has an EZNav multi-line control panel.
- Field convertible gas system
- Ultra condensing efficiency
- Dual stainless steel heat exchangers
- Low NOx emissions (20ppm)
Product Highlights
High-efficiency condensing tankless water heater with dual stainless steel heat exchangers and low NOx emissions.
Product Information
Standard Information
- Brand: NAVIEN
- Manufacturer Part Number: NPE-150S2NG
- Country of Origin: KOREA, REPUBLIC OF
Technical Specifications
- Heat Capacity (input) Natural gas: 18,000 – 120,000 BTU/h
- Heat Capacity (input) Propane: 18,000 – 120,000 BTU/h
- UEF (NG & LP): 0.93
- Flow rate (DHW) 19°C temp rise: 25.7 l/m (6.8 GPM)
- Flow rate (DHW) 25°C temp rise: 20.1 l/m (5.3 GPM)
- Flow rate (DHW) 37°C temp rise: 12.9 l/m (3.4 GPM)
- Dimensions: 43.9cm W x 69.6cm H x 33.5cm D (17.3″ W x 27.4″ H x 13.2″ D)
- Boiler weight: 28.1 kg (62 lbs)
- Installation location: Indoor or outdoor wall-hung
- Venting type: Forced draft direct-vent
- Ignition: Electronic ignition
- Water pressure: 1.05-10.55 kg/cm2 (15-150 PSI)
- Natural gas supply pressure (from source): 3.5 ” WC to 10.5 ” WC
- Propane gas supply pressure (from source): 8 ” WC to 13 ” WC
- Natural gas manifold pressure (min-max): -0.04 ” WC to -0.4 ” WC
- Propane gas manifold pressure (min-max): -0.03 ” WC to -0.4 ” WC
- Minimum flow rate: 1.9 l/m (0.5 GPM)
- Cold water inlet: 3/4″ NPT
- Hot water outlet size: 3/4″ NPT
- Gas inlet: 3/4″ NPT
- Main supply: 120V AC, 60 Hz
- Maximum power consumption: 200 W (max 2 A), 350 W (max 4 A) with external pump connected
- Casing: Cold rolled carbon steel
- Heat exchangers: Primary heat exchanger: stainless steel Secondary heat exchanger: stainless steel
- Exhaust: 2″ or 3″ PVC, CPVC, approved polypropylene and stainless steel 2″ or 3″ special gas vent type BH (Class II, A /B/C)
- Intake: 2″ or 3″ PVC, CPVC, approved polypropylene and stainless steel 2″ or 3″ special gas vent type BH (Class II, A /B/C)
- Vent clearances: 0″ to combustibles
- High elevations: 10,100 feet for both NG or LP gas. Please refer to Installation Manual for additional details and instructions.
- Safety Devices: Flame rod, APS, ignition operation detector, water temperature high limit switch, exhaust temperature high limit sensor, power surge fuse, burner high limit fuse, vent installation detector (VID)
- Application: Indoor/Outdoor
- Depth: 13-1/5″
- Energy Star: Y
- Gas Type: NG/LP
- Height: 27-2/5″
- Hot Water @ 35°F Rise Capacity: 6.8 GPM
- Hot Water @ 45°F Rise Capacity: 5.3 GPM
- Hot Water @ 70°F Rise Capacity: 3.4 GPM
- Max. BtuH Input: 120,000
- Min. BtuH Input: 18,000
- Model #: NPE-150S2
- Width: 17-3/10″
- Wt. Lbs.: 62
- Brand: Navien
- SKU: NPE-150S2
- UPC: 884954920757
- BTU/hr: 120,000
- Enable Dropship: No
Professional installation by a licensed plumbing/HVAC contractor is recommended. Follow local codes for gas, venting and electrical connections.
Why Buy from GIAHAO LLC
- Free Shipping across the contiguous United States
- Fast Dispatch – most orders ship within 1 business day
- Secure Checkout with encrypted payment processing
- Dedicated Support – our team is ready to help with sizing and compatibility questions
Questions before you order? Call +1 251 416 2937 or email support@giahao.com – GIAHAO LLC, 3901 Pikes Peak Rd, Parker, CO 80138, USA.
Customer Reviews
GIAHAO
Our Promise
Reliable Support
Mon–Fri 9:00AM–6:00PM · Sat–Sun: Closed
100% Safe & Secure
Protected. Encrypted. Trusted. SSL secured checkout.
Free Shipping
Free on all U.S. orders. Curbside delivery for oversized items.
90-Day Returns
Simple. Easy. Guaranteed. No restocking fees — ever.
Reliable Support
Mon–Fri 9:00AM–6:00PM · Sat–Sun: Closed
100% Safe & Secure
Protected. Encrypted. Trusted. SSL secured checkout.
Free Shipping
Free on all U.S. orders. Curbside delivery for oversized items.
90-Day Returns
Simple. Easy. Guaranteed. No restocking fees — ever.

Reviews
Clear filtersThere are no reviews yet.