Noritz EZTR40 120,000 BTU Tankless Water Heater - HCNAC1010-NG

Noritz EZTR40 120,000 BTU Tankless Water Heater - HCNAC1010-NG

The EZTR40 vents with flexible vent directly through existing B‐Vent with no need to spend time changing existing vent. Water connections are on the top of the heater so now you can use flex lines direct from the top like a tank. 1/2 inch gas line connection to existing line saves time and money.

It is designed to easily convert your 30/40 gallon tank type water heater to tankless technology. This heater can be installed on gas lines as small as 1/2" (120,000 BTUH maximum requirement). The EZTR flows up to 6.6 gallons per minute and is Energy Star listed.

Features

• Standard Input‐ Gas consumption ranges from 15,000 BTUh to 120,000 BTUh

• Capacity Range‐ Flow rates from 0.5 GPM up to 6.6 GPM

• Compact Design‐ ANSI Z21.10.3/CSA 4.3 certified design for indoor wall‐mounting

• Durable Steel Casing with Polyester Coating

• Venting Options‐ Indoor venting only. N‐Flex Kit (included) is designed for the installation inside of B‐Vent as a sleeve

• Direct Electronic Ignition

• Uniform Energy Factor (UEF) ‐ 0.87(NG) /0.87(LP)

• Temperature Controls‐ Includes built in display that can preset the output temperature to either 120°F, 135°F, or 140°F

• Power Cord Installation Kit‐ 6' power cord is included and attached

• Safety Devices‐ Flame Sensor, Overheat Prevention Device, Lighting Protection Device, Freeze Protection, Condensate Overfill, Fan Rotation Detector

• Additional Features ‐ Temperature Lockout, High Elevation Adjustment

Specifications

What Our Experts Think

• Reliable Performance: Delivers 120,000 BTUs for continuous hot water, ideal for smaller homes or light-duty applications.
• Energy Efficiency: Reduces energy waste with tankless technology, providing on-demand hot water without standby heat loss.
• Retrofit-Ready Design: Easily replaces conventional 40-gallon tank water heaters with minimal re-piping required.
• Compact and Space-Saving: Wall-mounted unit saves valuable floor space while enhancing utility efficiency.
• Long-Lasting Durability: Built with premium components to ensure consistent performance and reduced maintenance needs.

Q&A

Q: What is the Noritz EZTR40 Tankless Water Heater?
A: The Noritz EZTR40 is a 120,000 BTU natural gas tankless water heater designed for easy replacement of 40-gallon tank water heaters with minimal modifications.

Q: Why is the EZTR40 ideal for retrofits?
A: It features top-mounted water connections and flexible venting options, simplifying the transition from traditional tank heaters.

Q: What is the maximum flow rate?
A: The EZTR40 delivers a maximum flow rate of up to 6.6 GPM, providing continuous hot water for small to medium households.

Q: Is the EZTR40 energy-efficient?
A: Yes, it offers an efficiency rating of 0.87 UEF, helping homeowners reduce energy usage and costs.

Q: What safety features are included?
A: The EZTR40 comes with built-in freeze protection, overheat protection, and scale detection to ensure reliable and safe operation.

Q: Is professional installation recommended?
A: Yes, hiring a professional ensures proper installation, safety compliance, and optimal performance.

Maintenance Tips

• Descale Annually: Flush the heat exchanger with a descaling solution to prevent scale buildup.
• Clean Inlet Filter: Check and clean the cold-water inlet filter every 6–12 months to ensure smooth water flow.
• Inspect Ventilation: Keep air intake and exhaust vents free of obstructions for proper airflow.
• Check Gas Connections: Regularly inspect gas lines for leaks or loose fittings.
• Monitor Error Codes: Respond quickly to any error messages by consulting the manual.
• Exterior Cleaning: Wipe down the casing with a soft, damp cloth to prevent dust accumulation.
• Annual Professional Checkup: Schedule a certified service technician inspection to maintain peak efficiency and safety.