PNAV000037 Navien NPE-240S2 Condensing Tankless Water Heat (...)

The Navien NPE-240S2 is a wall-hung, condensing tankless water heater engineered to deliver continuous hot water in compact, efficient form. Compatible with both natural gas and propane, it operates across an input range of 13,300 to 199,900 BTU/hr. Its advanced dual stainless-steel heat exchangers and forced-draft direct-vent system contribute to a high Uniform Energy Factor (UEF) of 0.96, achieving up to 11.2 GPM at a 35 °F temperature rise. Designed for precise control and easy installation, it features electronic ignition, ¾″ NPT water and gas connections, and supports water pressures from 15 to 150 psi. With an Energy Star rating, it enhances efficiency and lowers operating costs. Constructed of robust cold-rolled carbon steel and suitable for indoor or outdoor installation, its compact dimensions make retrofit and new installations equally straightforward.

A high-efficiency condensing tankless heater delivering up to 11.2 GPM at 35 °F rise, with an impressive 0.96 UEF, offering energy-star compliant performance for residential and commercial applications.

Manufacturer: NAVIEN INC

Product Features

• Input capacity: 13,300 – 199,900 BTU/hr for both natural gas and propane
• Uniform Energy Factor: 0.96
• Maximum output: 11.2 GPM at 35 °F rise (gradually decreases at higher ΔT)
• Forced-draft, direct-vent operation with electronic ignition
• Wall-hung design, indoor or outdoor capable
• ¾″ NPT inlet/output water and gas connections
• Operating water pressure: 15 – 150 psi
• Power: 120 V, draws approx. 2 A (200 W); up to 4 A (350 W) with external pump
• Maximum continuous hot water flow: 5.8 GPM at 67 °F rise
• High-efficiency dual stainless-steel heat exchangers
• Cold-rolled carbon steel casing; compact size (17.3″ W × 27.4″ H × 13.2″ D)
• Energy Star certified for sustainable performance

Product Attributes

Availability