“Making your life a happy and safe oasis with hot water”

NC380Established in 1951, Noritz Corporation has become Japan’s leading manufacturer of household water heaters and related products, including Japanese-style bathtub water heaters fueled by gas and kerosene, for residential and commercial use. Hot water provides relief and relaxation for both the mind and body.
Ever mindful of global environmental issues, Noritz is making every effort to develop eco-friendly products in order to help keep our environment clean and safe for the benefit of future generations. Noritz has established its own criteria for environment-conscious products eco-friendly products. The criteria is determined based on the level of contribution of each factor to environmental preservation. The Noritz Eco-friendly Product Symbol indicates approved tankless water heaters and detailed descriptions of their eco-friendly characteristics.

New standards for Eco-friendly products are being introduced in respect to “Energy”, “Resources”, and “Environmentally Stressful Substances”. The aim is to minimize the environmental load during the life cycle of a product. Due to Noritz successful expansion in eco-friendly product lineups, eco-friendly products currently account for more than 90% of total sales.


When it comes to quality, Noritz takes no short cuts in producing the highest quality tankless water heaters:

  • Noritz is always at the forefront in tankless technology. We were the first in the world to offer ASME accredited tankless water heaters. We have the highest flow rates vs other tankless water heaters in a comparable classes. We have the largest model selection, as well as being the only tankless manufacturer to offer boilers for heating applications. We offer true commercial grade copper (25% thicker) piping in our heat exchangers. We have the tankless industry’s first dual flame burners, which maximizes output, provides temperature stability, and maintains low emissions. We offer the largest multi-system capacity set-up available, 24 units @ 9.1 million btus producing 316.8 GPM.
  • When you compare our heaters in the same class with other tankless manufacturers, you’ll quickly learn that Noritz is the better performing heater hands down. Because of the Noritz technology advantage, you will get a higher performance heater. A lot of our competitors market their heaters based on the best scenario, and therefore state their heaters at its highest flow rate. Our heaters are rated on a more realistic scenario, so when you start comparing the maximum performance capacity, you’ll find that Noritz has the best value based on performance.
  • Unlike other manufacturers, we do not outsource the main components of our heaters. We manufacture nearly 100% of the parts that go into our heaters. We even make the heat exchanger’s copper tubing from raw copper. This allows Noritz to have the highest quality control of all the heater’s parts and components. The high level of quality is an attribute of TPS Just-In-Time (JIT) Production system. Noritz is the only tankless manufacturer to implement the JIT Production system. Only one company per industry is granted permission to use this super-efficient, quality control production system in Japan.


We service a full range of Noritz wallhung tankless water heaters:

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