Tankless Water Heater

Noritz offers a full-line of compact residential tankless water heaters for any application.

NR111-SV, NR111-OD, NR111-DV
The NR111 series is best suited for higher capacities, such as multiple-bathroom households with higher hot water demands. Large residential applications can range from washers, sinks and showers to toilets and Jacuzzi-sized bath tubs, many that run at the same time throughout a day. With features like coated copper heat exchangers to prevent deterioration and internal piping 25% thicker than base models to extend product life, these residential tankless water heaters are manufactured to last. In addition, NR111 series is Quick-Connect capable and has a Turbo-Flow feature for higher hot water flow, ensuring an endless supply of hot water for you and your family. To best fit your hot water application needs, three venting options are available: SV (indoor/outdoor), OD (outdoor only) and DV (sealed combustion, indoor only).

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NEW NR98-DVC!!! All stainless concentric venting (5″ outer/3″ inner), zero clearance, single wall penetration, adjustable vent pieces, adjustable wall-mount brackets, built-in remote – exclusive 12 yr warranty on heat exchanger/5 yrs on parts.

NR98-SV, NR98-OD, NR98-DV, NR98-DVC
NR71-SV, NR71-OD, NR66-SV, NR66-OD
The NR66 series is perfect for apartments, condominiums, and townhomes, that usually contain 1-3 showers. For heavier residential demand, the NR98 series can comfortably accommodate homes with 3 showers and is Quick-Connect compatible-which can double the hot water capacity if needed. The NR98 series contains commercial grade heat exchangers with 25% thicker copper piping than other brands and all models are equipped with a Turbo-Flow feature which enables the units to provide a boost of higher hot water flow.

Noritz is the first tankless water heater manufacturer to introduce tankless hydronic boilers to consumers. The NH series (NH199-DV and NH150-DV) hydronic boilers share the same features as our residential and commercial tankless water heaters-energy efficient, environmentally friendly and engineered to provide endless hot water for all applications. Dramatically smaller in size, Noritz tankless hydronic boilers weigh only 66 pounds versus a conventional boiler’s weight of over 300 pounds. They also offer 9 temperature settings for hydronic heating in your home.

Hydronic Heating Applications
The NH series provides quiet and constant room temperature comfort in the home for various heating choices, such as panel radiators, baseboard flooring and radiant flooring. The most important benefit of hydronic heating is allergens or dust will not be re-circulated in the home, which happens when using forced air furnaces. Noritz tankless hydronic boilers warm objects in a room, providing a higher level of warmth and comfort.

Norbitz tankless water heater features include:


    Noritz tankless water heaters heat water on demand and provide hot water to any application in a few seconds. An advanced electronic control system ensures an endless hot water supply without temperature fluctuations. Highly efficient, these units can save up to half in gas water heating bills.


    The NR98 and NR111 series are Quick-Connect capable. To double hot water capacity, these models can be installed side-by-side (2 units) and be controlled by a single digital remote thermostat.

Advanced technology:


    Newly designed Noritz commercial hot water heaters are capable of boosting output at higher flow rates, while reducing the minimum required flow rate for each unit. Our next generation dual-flame burner technology is the first in the industry. With state-of-the-art gas combustion technology, these modulating burners maximize output and provide temperature stability, while maintaining low emissions.


    The new super heat exchanger has many advantages that set it apart from others in the industry. It was re-engineered to increase thermal efficiency and made smaller to maximize installation flexibility. The piping is also 25% thicker to help prevent condensation and erosion, ensuring a longer life capacity.


    Noritz’s revolutionary PC board is at the heart of its tankless technology. The new super heat exchanger and dual-flame burner work together with the PC board to provide the user with higher flow rates, efficiency and durability, while remaining environmentally friendly. The controls are lacquer coated to help prevent any deterioration of circuit elements and an on-board memory chip stores an error code history for easy maintenance monitoring.


    The flow rate of a tankless water heater depends upon the temperature of the incoming water. In general, the warmer the incoming water temperature is, the more flow you will get from a tankless water heater. This flow rate can be simply determined by calculating the temperature rise. The temperature rise is basically how much you need to heat the water to reach the desired temperature setting. For example, if you set the heater’s temperature to 105oF and your area’s ground water temperature is 60oF, the difference is 45oF in temperature rise. It is always recommended that you choose a residential tankless hot water heater based on the colder seasons so that you will get the peak demand you need for hot water.


    The chart is for ESTIMATION ONLY. Actual temperature of your incoming water will vary by geographic location. Before installation, have a registered plumber size the application according to Noritz Specification Sheets. As the leading tankless water heater manufacturer, we create these sheets to ensure all of your residential applications are met, every time.