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

SKU:  NPE-240S2

Overview

Maximize your home’s hot water performance with the Navien NPE-240S2, the highest capacity unit in the NPE-S2 series. Available now at Concept Baths, this ultra-high efficiency condensing tankless water heater delivers a remarkable 199,900 BTU/h of heating capacity, ensuring an endless, reliable supply of hot water for even the most demanding households. Boasting an outstanding 0.96 Uniform Energy Factor (UEF) and ENERGY STAR® certification, this premium unit provides top-tier performance while significantly lowering your monthly utility bills.

Designed for seamless upgrades and new installations, the NPE-240S2 features ½” gas pipe capability up to 24 feet and versatile 2" PVC venting up to 75 feet. The advanced dual Venturi system ensures precise combustion control and allows for easy field convertibility between Natural Gas (NG) and Liquid Propane (LP). Complete with durable dual stainless steel heat exchangers and the user-friendly EZNav™ multi-line control panel, the NPE-240S2 offers an unbeatable combination of power, longevity, and intelligent design.

Key Features:

• Maximum Heating Capacity: Robust 199,900 BTU/h output delivers an impressive 11.2 GPM flow rate (at 35°F temperature rise) to support multiple bathrooms simultaneously.

• Energy Star Certified: Super high-efficiency 0.96 UEF rating ensures incredible energy savings and eco-friendly operation.

• Premium Durability: Engineered with dual stainless steel heat exchangers that strongly resist corrosion and extend the lifespan of the unit compared to traditional copper exchangers.

• Easy Retrofit Installation: Capable of utilizing existing ½" gas lines up to 24 feet, cutting down on installation time and costly upgrades.

• Flexible Venting Options: Uses standard Schedule 40, 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow for the safe use of PVC, CPVC, polypropylene, and stainless steel.

• Field Convertible Gas System: Built-in dual Venturi system makes it fast and easy to convert the unit from Natural Gas to Propane in the field.

• Intuitive Smart Controls: Features the EZNav™ multi-line control panel with a startup wizard and built-in intuitive software, plus a convenient HotButton control panel.

• Eco-Friendly & Safe: Ultra-low NOx emissions (20ppm) compliant with strict SCAQMD regulations, and includes a Vent Installation Detector (VID) for added safety.

• Commercial Capabilities: Cascading capable for higher demand and supports common venting for up to 12 units.

Technical Specifications:

• Dimensions: 17.3" W x 27.4" H x 13.2" D

• Heating Capacity: 13,300 - 199,900 BTU/h

• Max Flow Rate (35°F Rise): 11.2 GPM

• Max Flow Rate (67°F Rise): 5.8 GPM

• Uniform Energy Factor (UEF): 0.96

• Certifications: ENERGY STAR®, CSA, NSF (Standard 5), Low Lead (<0.25%), SCAQMD