NPE-180S2 – Condensing Tankless Water Heater – 150,000 BTU

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.

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 PNAV000021

Specification

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