Noritz has been a trusted name in water heaters since Founded 1951, based in Japan. As part of Noritz Corporation (Japan), Noritz benefits from extensive R&D and manufacturing resources. The brand is particularly known for Pioneer in tankless water heating technology with decades of Japanese engineering and the EZ Series condensing units for North America. Noritz is positioned in the premium price tier, making it a premium investment for water heaters.
Noritz Water Heaters
by Noritz Corporation (Japan)Noritz manufactures condensing and non-condensing tankless water heaters for residential and commercial applications. The EZ Series features ComfortCore heat exchanger technology and simplified installation with integrated controls. The CB Combi-Boiler provides both domestic hot water and space heating. Commercial models handle high-demand applications for restaurants, hotels, and multi-family buildings.
PremiumTop-tier materials, design, and warranty
Noritz Water Heaters Product Lines
EZ Series Condensing TanklessNR Series Non-CondensingCB Combi-BoilerCommercial TanklessNCC Series
Why Choose Noritz for Water Heaters?
Noritz stands out in the water heaters market because of Pioneer in tankless water heating technology with decades of Japanese engineering and the EZ Series condensing units for North America. Their products carry 4 industry certifications, including Energy Star, UL Listed, CSA Certified, giving homeowners confidence in quality and compliance. Noritz backs their water heaters with a 12-year warranty on residential heat exchanger; 5-year on parts, which shows commitment to long-term reliability. With 5 dedicated product lines — EZ Series Condensing Tankless, NR Series Non-Condensing, CB Combi-Boiler, Commercial Tankless, and more — there's a Noritz option for virtually every need and budget.
Certifications & Standards
Energy StarUL ListedCSA CertifiedAHRI Certified
Warranty & Support
Warranty12-year warranty on residential heat exchanger; 5-year on parts
Phone Support1-866-766-7489
Official Websitehttps://www.noritz.com
Where to Buy Noritz Water Heaters
Water Heaters How-To Guides
View All →How to Adjust Water Temperature
Set your gas or electric water heater thermostat to the right temperature for comfort, safety, and lower energy bills -- plus how to verify the actual output with a thermometer.
How to Choose the Right Size Water Heater
Calculate the right water heater size so you never run out of hot water -- covers first-hour rating for tanks, GPM for tankless, quick sizing charts, and the mistakes that leave people taking cold showers.
How to Flush Your Water Heater
Flush sediment from your tank water heater to cut energy bills, eliminate rumbling noises, and add years to its life -- the most important maintenance task most homeowners skip.
Common Water Heaters Problems
View All →Leaking Water Heater
Water around the base demands immediate attention -- floor damage, mold, electrical hazards. Could be loose fittings, a failing T&P valve, a bad drain valve, or a rusted-through tank that needs replacement.
No Hot Water
No hot water from any fixture? Cause depends on gas vs. electric. Common culprits: pilot light out, tripped breaker, failed element, faulty thermostat or gas valve.
Pilot Light Won't Stay Lit
Lights but will not stay lit? Almost always the thermocouple -- a safety sensor that detects the pilot flame. When it fails, the gas valve shuts off. Straightforward DIY repair, under $25.
Water Heaters Types
View All →Water Heaters Buying Guides
View All →Noritz Water Heaters FAQ
Is Noritz a good brand for water heaters?
Noritz Corporation is a Japanese manufacturer of tankless water heaters, with US headquarters in Fountain Valley, California. Founded in 1951 in Kobe, Japan, Noritz is one of the world's largest tankless water heater manufacturers and a pioneer in the category. Noritz introduced the first residential tankless water heater to Japan and brought the technology to North America. Their EZ Series condensing tankless units feature easy installation with ComfortCore heat exchanger technology.
What warranty does Noritz offer on water heaters?
Noritz offers 12-year warranty on residential heat exchanger; 5-year on parts.
Where is Noritz made?
Noritz is based in Japan, headquartered in Fountain Valley, California (US HQ); Kobe, Japan (Global HQ).
What price range does Noritz water heaters fall into?
Noritz is positioned in the premium price tier for water heaters. You pay more but get superior quality, materials, and warranty coverage.
What water heaters product lines does Noritz offer?
Noritz offers 5 water heaters product lines: EZ Series Condensing Tankless, NR Series Non-Condensing, CB Combi-Boiler, Commercial Tankless, NCC Series.
What certifications does Noritz have for water heaters?
Noritz holds 4 certifications including Energy Star, UL Listed, CSA Certified.