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. With an input range of 15,000 to 150,000 BTU per hour and a Uniform Energy Factor of 0.96, this unit is Energy Star certified and delivers reliable performance with reduced energy costs. It supports flow rates up to 8.4 gallons per minute at a 35°F 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 EZNav™ multi-line control panel with integrated HotButton™ control and supports cascading with up to 32 units using Navien’s Ready-Link system. Approved for direct venting, it supports 2" venting up to 60 feet and 1/2" gas line capability up to 24 feet, offering flexible, space-saving installation options.
Features
- Up to 150,000 BTU/h input capacity
- 0.96 UEF and Energy Star certified
- Flow rate: 8.4 GPM at 35°F 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
- EZNav™ control panel with HotButton™
- Cascading capable with up to 32 units via Ready-Link
- Direct venting: 2" PVC up to 60 feet
- 1/2" gas pipe capable up to 24 feet
- 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
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