Navien NPN-180 Series LP Non-Condensing Tankless Water Heater – 180,000 BTU & Outdoor/Indoor Installation
Navien NPN-180 Series LP Non-Condensing Tankless Water Heater – 180,000 BTU & Outdoor/Indoor Installation
Navien NPN-180 Series LP Non-Condensing Tankless Water Heater – 180,000 BTU & Outdoor/Indoor Installation
Navien NPN-180 Series LP Non-Condensing Tankless Water Heater – 180,000 BTU & Outdoor/Indoor Installation
Instore Purchase Only
Please contact us for questions.
The Navien NPN-180 LP is a reliable, 180,000 BTU non-condensing tankless water heater built for homeowners and contractors who want dependable hot water performance without the complexity of a condensing system. As part of Navien’s NPN Series, it delivers strong flow rates, durable construction, and simplified installation—making it an excellent choice for remodels, replacements, and new construction.
Engineered for LP (propane) applications, the NPN-180 features Navien’s rugged stainless steel heat exchanger, easy venting options, and intuitive controls. Its compact, wall-mounted design saves space while providing continuous hot water on demand.
Key Features
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180,000 BTU non-condensing tankless performance
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Propane (LP) model designed for homes without natural gas
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Continuous hot water with a true tankless design
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Durable stainless steel heat exchanger for long service life
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Simplified installation compared to condensing units
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Compatible with standard plumbing systems
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Certified for safety and quality
A strong, practical solution for customers seeking reliable tankless performance with lower upfront costs than condensing models.
At Apex Supply Company, we offer local pickup, local delivery, and nationwide shipping.
| BtuH Water Heaters | 180000 BtuH |
|---|---|
| Cold Inlet Type | NPT |
| CommercialResidential | Commercial, Residential |
| Condensing | Tankless |
| Depth (in.) | 9.3 in. |
| Energy Factor Water Heaters | 0.81 |
| Environment | Outdoor |
| Fuel Connection Water Heaters | 3/4 in. |
| Fuel Type Water Heaters | Propane Gas |
| Gas Inlet Size | 3/4 in. |
| Gas Inlet Type | NPT |
| GPM 45F Rise Water Heaters | 6.6 GPM |
| Height (in.) | 23 in. |
| Ignition Type Water Heaters | Electronic Ignition |
| Maximum Delivered Temperature | 140 Degree F |
| Maximum Water Pressure | 150 PSI |
| Minimum Delivered Temperature | 98 Degree F |
| Minimum Water Pressure | 15 PSI |
| Mounting Type | Wall-Hung |
| Operating Voltage | 120V AC |
| Series | NHW-SE |
| Type | Condensing Tankless |
| Unit Depth (in.) | 9.3 in. |
| Unit Height (in.) | 23 in. |
| Unit Width (in.) | 14 in. |
| Vent Connection Size | 3/5 in. |
| Vent Type | Direct Vent |
| Water Connection Water Heaters | 3/4 in. |
| Width (in.) | 14 in. |
Customer Reviews
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Across the U.S.
We offer safe, dependable delivery on every order. Choose from economy ground, standard ground, or 2-day air. We also offer LTL shipping for large items. You’ll receive real-time updates, flexible scheduling, and delivery estimates by email so you always know where your order is and when it will arrive.
Easy Returns
As simple as 1-2-3
Ordered the wrong product? Item damaged in transit? Our 3-step process makes returning products easy – even up to a year after purchase – with no restocking fees on returns made within 30 days.
The APEX Difference
APEX Supply Company has been a family business since its founding in 1933. Our commitment to diligent service and expert knowledge makes us more than a parts supplier.