Noritz EZTR75 199,900 BTU Tankless Water Heater - HCNAC1178-NG
The EZTR75 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". The EZTR flows up to 6.6 gallons per minute and is Energy Star listed.
Features
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Standard Input‐ Gas consumption ranges from 18,000 BTUh to 180,000 BTUh (EZTR75) and 199,900 BTUh (EZTR75) BTUh
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Capacity Range‐ Flow rates from 9.8 gpm (EZTR75) and 11.1 gpm (EZTR75)
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Compact Design‐ ANSI Z21.10.3/CSA 4.3 certified design for indoor wall‐mounting
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Durable Steel Casing with Polyester Coating
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Venting Options‐ Indoor venting only. N‐Flex Kit (included) is designed for the installation inside of B‐Vent as a sleeve
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Direct Electronic Ignition
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Uniform Energy Factor (UEF) ‐ 0.96(NG) /0.96(LP)
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Temperature Controls‐ Includes built in display that can preset the output temperature to either 100°F to 140°F
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Power Cord Installation Kit‐ 6' power cord is included and attached
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Safety Devices‐ Flame Sensor, Overheat Prevention Device, Lighting Protection Device, Freeze Protection, Condensate Overfill, Fan Rotation Detector
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Additional Features ‐ Temperature Lockout, High Elevation Adjustment
Specifications
| Case |
Zinc Aluminum Magnesium |
| Direct Electronic Ignition |
Yes |
| Energy Star |
Yes |
| Finish Family |
Metallic Silver |
| Flow Rate @ 35 ºF Rise |
8.6 gpm |
| Flow Rate @ 45 ºF Rise |
7.6 gpm |
| Flow Rate @ 75 ºF Rise |
4.4 gpm |
| Flow Rate Display Mode |
gpm |
| Flow Rate, Maximum |
11.1 gpm |
| Hard-Wired Remote |
Yes |
| Heat Exchanger Warranty |
12 Year year |
| Indoor/Outdoor |
Indoor/Outdoor |
| Labor Warranty |
1 Year |
| Lightning Protection |
Yes |
| Maximum Temperature |
140 ºF |
| Min. Installation Clearance, Front |
4 Inch |
| Min. Installation Clearance, Sides |
3 Inch in |
| Min. Installation Clearance, Top |
12 Inch in |
| Minimum Activation Rate |
0.5 gpm |
| Must ship freight |
Yes |
| Parts Warranty |
6 Year Limited Parts Warranty |
| Product Depth |
13 in |
| Product Height |
28.3 in |
| Product Shipping Weight |
81 lb |
| Product Width |
18.5 in |
| Recirculation compatible |
Yes |
| Shipping Time |
7 to 10 days |
| Unit Type (Selector) |
Standard |
| Warranty |
12 Year Limited Heat Exchange year |
| Water Connection Location |
Top |
| Water Connection Size |
3/4 Inch in |
| Water Pressure Range, Min-Max |
15-150 psig |
| Wattage |
179 W |
Package Include
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Lead Free 3/4" Threaded Isolation Valve Kit w/ Male 500K Btuh Pressure Relief Valve (IK-WV-200-1-TH-LF)
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Flex Vent 2" Kit 25 Feet (EZ2FVK-1)
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Flex Vent 2" Conversion Kit (EZ2-CK)
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Aluminum Flex Sleeve
What Our Experts Think
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High BTU Output: Delivers 199,900 BTUs, ideal for meeting the hot water demands of larger homes or light commercial use.
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Energy Efficiency: Advanced tankless technology reduces energy consumption, cutting down on utility costs.
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Easy Retrofit: Designed to simplify replacement of traditional 75-gallon tank water heaters with minimal re-piping.
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Space-Saving Design: Compact wall-mounted unit frees up valuable floor space while delivering powerful performance.
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Durability and Reliability: Constructed with premium components to ensure long-lasting operation and reduced maintenance needs.
Q&A
Q: What is the Noritz EZTR75 Tankless Water Heater?
A: The Noritz EZTR75 is a 199,900 BTU natural gas tankless water heater designed for high-efficiency residential and commercial water heating.
Q: What makes the EZTR75 unique?
A: It features a top-mount connection and dual stainless steel heat exchangers, making it ideal for easy retrofits and long-lasting performance.
Q: What is the maximum flow rate?
A: The EZTR75 delivers a maximum flow rate of up to 11.1 GPM, providing continuous hot water for multiple fixtures.
Q: Is the EZTR75 energy-efficient?
A: Yes, it boasts an ultra-high efficiency rating of 0.96 UEF, helping reduce energy consumption and lower utility bills.
Q: Can it be used in cold climates?
A: Yes, it includes built-in freeze protection for reliable operation in colder environments.
Q: Is professional installation recommended?
A: Yes, for optimal performance and safety, professional installation is advised.
Maintenance Tips
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Flush the System Annually: Descale the unit using a descaling kit to prevent mineral buildup.
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Clean the Filter: Inspect and clean the inlet water filter every 6–12 months to maintain water flow.
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Check Venting: Ensure the exhaust and intake vents are clear of obstructions for proper airflow.
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Inspect Gas Connections: Regularly check gas lines for leaks or loose connections.
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Monitor for Error Codes: Pay attention to error displays and troubleshoot promptly using the manual.
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Keep the Exterior Clean: Wipe down the outer casing with a damp cloth to prevent dust accumulation.
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Professional Service: Schedule a certified technician inspection annually to ensure optimal performance.
