Navien Premium NPE-240S2 Condensing Tankless Water Heater

Navien NPE-240S2 High-Efficiency Condensing Tankless Water Heater

The Navien NPE-240S2 is a high-efficiency condensing tankless water heater designed to provide dependable on-demand hot water for residential and commercial applications. With up to 199,900 BTU/h of heating input and flow rates of up to 11.2 GPM at a 35°F temperature rise, it provides high-capacity hot-water performance without requiring a conventional storage tank.

With a 0.96 Uniform Energy Factor, the NPE-240S2 uses advanced condensing technology to recover additional heat from combustion exhaust. This helps reduce wasted energy and fuel consumption compared with less-efficient water-heating systems. The unit is ENERGY STAR® certified and supports both natural gas and propane installations.

The NPE-240S2 heats water according to demand, reducing the standby heat loss associated with conventional storage tanks. Its compact wall-mounted cabinet conserves floor space and supports indoor or outdoor installation when configured with the appropriate components.

Actual hot-water performance depends on incoming-water temperature, desired outlet temperature, water pressure and combined fixture demand. Professional sizing helps ensure the system can meet the home’s expected hot-water requirements during colder Canadian conditions.

Key Features

Up to 199,900 BTU/h Heating Input
Provides high-capacity on-demand water heating for properly sized residential and commercial applications.

0.96 UEF Efficiency
High-efficiency condensing operation recovers additional heat and helps reduce unnecessary energy loss.

Temperature-Rise-Based Hot-Water Performance
Delivers up to 11.2 GPM at a 35°F rise, 8.7 GPM at a 45°F rise and 5.8 GPM at approximately a 67°F rise.

Dual Stainless-Steel Heat Exchangers
Primary and secondary stainless-steel heat exchangers support efficient heat transfer, corrosion resistance and durable operation.

Natural Gas and Propane Convertible
The field-convertible gas system supports natural gas or propane operation when converted by a qualified technician using the supplied components.

EZNav™ Digital Controls
The intuitive multiline control panel provides convenient access to temperature settings, operating information and system configuration.

Built-In HotButton™ Control
Supports compatible on-demand recirculation configurations when used with approved external recirculation components.

Low NOx Operation
Produces NOx emissions below 20 ppm, supporting cleaner and more efficient combustion.

Flexible Venting
Supports 2-inch venting up to 75 feet and 3-inch venting up to 150 feet, subject to vent configuration and installation requirements.

Compact Wall-Mounted Design
The 17.3-inch-wide cabinet saves floor space and supports indoor or outdoor wall-mounted installation.

Built-In Safety Systems
Includes flame monitoring, ignition detection, high-temperature protection, surge protection and a Vent Installation Detector.

Cascading and Common-Venting Capability
Supports larger applications through compatible cascading configurations and common venting of up to 12 units.

ENERGY STAR® Certified
Meets ENERGY STAR® efficiency requirements and carries AHRI reference number 206368362.

Why Buy the Navien NPE-240S2 Tankless Water Heater?

The Navien NPE-240S2 is an excellent option for homeowners seeking high-capacity on-demand hot water, efficient operation and a compact installation. Its 0.96 UEF rating, dual stainless-steel heat exchangers, EZNav™ controls and flexible venting options offer an effective combination of efficiency, durability and installation flexibility.

Professional sizing is essential because actual flow depends on the required temperature rise and combined fixture demand. Contact Jimmy HVAC for a free quote and professional assessment to determine whether the Navien NPE-240S2 is properly sized for your home.