Navien NPE-180S2 Condensing Tankless Water Heater – 150,000 BTU, 8.4 GPM, Natural Gas & Propane
Key features
- Up to 150,000 BTU/h input capacity
- Flow rate
- Dual stainless steel heat exchangers
- Ultra condensing efficiency
Please note: this is the US version of this product, designed for US 120V / 60Hz mains power (including any charger supplied) with a US plug. To use it in the UK you will need a suitable step-down voltage transformer, not just a plug adapter. Manufacturer warranty terms may differ for US-version products.
Please note: this is the US version of this product, supplied with US gas fittings. A UK-compatible regulator and hose are needed to use it with UK propane or butane bottles, and we recommend having the connection checked by a Gas Safe registered engineer. Manufacturer warranty terms may differ for US-version products.
Never run out of hot water again. The Navien NPE-180S2 Condensing Tankless Water Heater heats water on demand, saving space and energy compared with a tank water heater.
Navien NPE-180S2 – Condensing Tankless Water Heater – 150,000 BTU
The Navien NPE-180S2 is a high-efficiency condensing tankless water heater built to provide continuous hot water for residential homes. It supports flow rates up to 8.4 gallons (31.8 L) per minute at a 35°F (2°C) rise, making it well-suited for homes with multiple bathrooms or simultaneous hot water needs.
Engineered with dual stainless steel heat exchangers for enhanced durability and ultra condensing performance, the NPE-180S2 is designed for indoor or outdoor wall-hung installation. It includes the EZNavTM multi-line control panel with integrated HotButtonTM control and supports cascading with up to 32 units using Navien’s Ready-Link system. Approved for direct venting, it supports 2″ (5.1 cm) venting up to 60 feet (18.3 m) and 1/2″ gas line capability up to 24 feet (7.3 m), offering flexible, space-saving installation options.
Features
- Up to 150,000 BTU/h input capacity
- Flow rate: 8.4 GPM at 35°F (2°C) rise
- Dual stainless steel heat exchangers
- Ultra condensing efficiency
- Low NOx emissions (20 ppm)
- Field convertible gas system (NG/LP)
- Indoor or outdoor wall-hung installation
- EZNavTM control panel with HotButtonTM
- Cascading capable with up to 32 units via Ready-Link
- Direct venting: 2″ (5.1 cm) PVC up to 60 feet (18.3 m)
- 1/2″ gas pipe capable up to 24 feet (7.3 m)
- Gas connection: 3/4″ NPT
- Water connections: 3/4″ hot and cold
- 120V, single phase operation
Applications
- Residential homes with high hot water demand
- Multi-bathroom households
- Compact installations needing wall-hung systems
- Projects requiring venting and gas line flexibility
- Multi-unit cascade setups for greater capacity
Product Includes
- 1 – Wall Mounting Bracket
- 4 – Tapping Screw and Anchor
- 2 – Vent Terminator
- 4 – Wall Flanges
PNAV000021
Free UK delivery
Every order ships free to any address in the United Kingdom. Most orders arrive within 2–10 working days. As soon as your order is dispatched you will get a tracking link by email, and you can follow it any time on our Track Order page.
30-day returns
If you are not happy with your order you can return it within 30 days. Please contact us first so we can help and send you the return details.
Safe, secure card payment
We accept Visa, Mastercard, American Express and Maestro debit and credit cards, plus Apple Pay and Google Pay. Payments are processed securely by Stripe over an encrypted connection, and we never see or store your full card details.
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