Navien Premium NPE-240A2 Condensing Tankless Water Heater

Navien NPE-240A2 High-Efficiency Condensing Tankless Water Heater

The Navien NPE-240A2 is a high-efficiency condensing tankless water heater designed for larger homes and residential applications with substantial hot-water requirements. 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 delivers hot water on demand without requiring a conventional storage tank.

With a 0.95 Uniform Energy Factor, the NPE-240A2 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-240A2 is part of Navien’s advanced NPE-A2 series and includes the ComfortFlow® recirculation system. This integrated system combines a recirculation pump, buffer tank and intelligent controls to help reduce hot-water delivery time and minimize the cold-water sandwich effect commonly associated with tankless water heaters.

Its compact, wall-mounted cabinet helps conserve floor space and supports indoor or outdoor installation when installed with the appropriate components and according to local requirements. Actual hot-water capacity depends on incoming-water temperature, desired outlet temperature, water pressure and total fixture demand.

Key Features

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

0.95 UEF Efficiency
High-efficiency condensing operation helps recover additional heat and 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 5.6 GPM at a 67°F rise.

ComfortFlow® Recirculation System
An integrated recirculation pump, buffer tank and intelligent controls help reduce hot-water wait times and improve delivery comfort.

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

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 conversion 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 on-demand activation of compatible recirculation settings for convenient hot-water delivery.

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 valuable 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 206368359.

Why Buy the Navien NPE-240A2 Tankless Water Heater?

The Navien NPE-240A2 is an excellent option for homeowners seeking high-capacity hot-water performance, efficient operation and reduced hot-water delivery time. Its 0.95 UEF rating, ComfortFlow® recirculation system, dual stainless-steel heat exchangers and intelligent EZNav™ controls provide a strong combination of comfort, efficiency and durability.

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-240A2 is properly sized for your home.