Noritz is proud to feature a product that will not only save you money but will also help the environment by reducing energy use and CO2 emissions. Noritz tankless water heaters are over 80% efficient, they use less energy to operate and emit low NOx emissions with maximum output, making them environmentally friendly. There are many local and regional rebates for installing energy efficient products.
Tankless water heaters in the U.S. market have been increasing in popularity and sales over the past several years. This upward trend will continue to grow as more people learn about the benets of going tankless.
The most popular advantage of Noritz versus traditional tank water heaters is that you will never run out of hot water. A tankless water heater heats water on demand, so that means no storage or shortage of hot water. Imagine the luxury of always having hot showers or filling up a Jacuzzi hot tub and still having an endless supply of hot water for the rest of your household needs. It’s about time your home had an equal supply of hot and cold water.
Properly sized Noritz tankless water heaters are capable of supplying more hot water than traditional tank-type water heaters. With Noritz features such as Quick-Connect and Multi-System, our tankless water heaters can meet any hot water demand on today’s home.
Compact in design, a Noritz can be installed virtually anywhere. Compared to traditional tank-type water heaters, one of the most obvious diferences is its small size. Indoor or outdoor models are available. This frees up the space formally taken by a bulky tank.
With a Noritz tankless water heater, you'll save energy and thus, money. Our on-demand systems require no pilot light. Furthermore, according to the U.S. Department of Energy, operating costs could be up to 50% lower since there is no re-heating of water as with traditional water heaters.
Choose from the complete line of Noritz tankless water heaters designed for residential use. When properly sized, tankless water heaters provide the comfort of endless hot water to an entire home. All residential tankless water heaters are backed by one of the best warranties in the industry.
| Noritz Residential 531 Series Models |
N-0531S | N-0531S-OD |
| Gas Consumption - NG | 140,000 Max BTUH 20,000 Min BTUH |
140,000 Max BTUH 20,000 Min BTUH |
| Gas Consumption - LP | 140,000 Max BTUH 20,000 Min BTUH |
140,000 Max BTUH 20,000 Min BTUH |
| Max. Hot Water Capacity (45°F Rise) | 5.3 Gal./min. | 5.3 Gal./min. |
| Capacity Range | 0.5 - 6.6 Gal./Min. | 0.5 - 6.6 Gal./Min. |
| Type - Installation | Indoor / Outdoor Wall Hung |
Outdoor Wall Hung |
| Type - Air Supply / Exhaust | Power Vented, 3" Flue | Power Vented |
| Ignition | Direct Ignition | Direct Ignition |
| Operating Pressure | 15 - 150 psi | 15 - 150 psi |
| Minimum Flow Rate | 0.5 GPM | 0.5 GPM |
| Gas Supply Pressure | NG: 4.0" - 10.5" LP: 8.0" - 14.0" |
NG: 4.0" - 10.5" LP: 8.0" - 14.0" |
| Dimensions | 20.5"H x 13.8W x 6.7"D | 20.5"H x 13.8W x 6.7"D |
| Weight | 36 Lbs. | 36 Lbs. |
| Water Holding Capacity | 0.2 Gallon | 0.2 Gallon |
| Connection Sizes - Water Inlet | 3/4" | 3/4" |
| Connection Sizes - Hot Water Oulet | 3/4" | 3/4" |
| Connection Sizes - Gas Inlet | 3/4" | 3/4" |
| Power Supply - Supply | 120 VAC (60Hz) | 120 VAC (60Hz) |
| Power Supply - Default Options | NG: 48W LP: 49W Freeze Prevention: 141W |
NG: 51W LP: 52W Freeze Prevention: 141W |
| Temperature Settings - Settings | 100 - 150°F (5°F Intervals) 160°F (12 Options) |
100 - 150°F (5°F Intervals) 160°F (12 Options) |
| Temperature Settings - Default Options | 120, 130, 140°F (Original is 120°F) |
120, 130, 140°F (Original is 120°F) |
| Included Accessories | Anchoring Screws | Anchoring Screws |
| Noritz Residential 631 Series Models |
N-0631S | N-0631S-OD |
| Gas Consumption - NG | 180,000 Max BTUH 25,000 Min BTUH |
180,000 Max BTUH 25,000 Min BTUH |
| Gas Consumption - LP | 180,000 Max BTUH 25,000 Min BTUH |
180,000 Max BTUH 25,000 Min BTUH |
| Max. Hot Water Capacity (45°F Rise) | 6.3 Gal./min. | 6.3 Gal./min. |
| Capacity Range | 0.5 - 7.1 Gal./Min. | 0.5 - 7.1 Gal./Min. |
| Type - Installation | Indoor / Outdoor Wall Hung |
Outdoor Wall Hung |
| Type - Air Supply / Exhaust | Power Vented, 4" Flue | Power Vented |
| Ignition | Direct Ignition | Direct Ignition |
| Operating Pressure | 15 - 150 psi | 15 - 150 psi |
| Minimum Flow Rate | 0.5 GPM | 0.5 GPM |
| Gas Supply Pressure | NG: 4.0" - 10.5" LP: 8.0" - 14.0" |
NG: 4.0" - 10.5" LP: 8.0" - 14.0" |
| Dimensions | 23.6"H x 13.8W x 6.7"D | 23.6"H x 13.8W x 6.7"D |
| Weight | 41 Lbs. | 41 Lbs. |
| Water Holding Capacity | 0.2 Gallon | 0.2 Gallon |
| Connection Sizes - Water Inlet | 3/4" | 3/4" |
| Connection Sizes - Hot Water Oulet | 3/4" | 3/4" |
| Connection Sizes - Gas Inlet | 3/4" | 3/4" |
| Power Supply - Supply | 120 VAC (60Hz) | 120 VAC (60Hz) |
| Power Supply - Default Options | NG: 59W LP: 66W Freeze Prevention: 141W |
NG: 46W LP: 50W Freeze Prevention: 141W |
| Temperature Settings - Settings | 100 - 150°F (5°F Intervals) 160°F (12 Options) |
100 - 150°F (5°F Intervals) 160°F (12 Options) |
| Temperature Settings - Default Options | 120, 130, 140°F (Original is 120°F) |
120, 130, 140°F (Original is 120°F) |
| Included Accessories | Anchoring Screws | Anchoring Screws |
| Noritz Residential 751 Series Models |
N-0751M | N-0751M-DV | N-0751M-OD |
| Gas Consumption - NG | 199,000 Max BTUH - 12,000 Min BTUH | ||
| Gas Consumption - LP | 199,000 Max BTUH - 12,000 Min BTUH | ||
| Max. Hot Water Capacity (45°F Rise) | 7.5 Gal./min. | 7.5 Gal./min. | 7.5 Gal./min. |
| Capacity Range | 0.5 - 9.8 Gal./Min. | 0.5 - 9.8 Gal./Min. | 0.5 - 9.8 Gal./Min. |
| Type - Installation | Indoor / Outdoor Wall Hung |
Indoor Wall Hung |
Outdoor Wall Hung |
| Type - Air Supply / Exhaust | Power Vented, 4" Flue | Direct Vent (Sealed Combustion) 4" Intake & Exhaust |
Power Vented |
| Ignition | Direct Ignition | Direct Ignition | Direct Ignition |
| Operating Pressure | 15 - 150 psi | 15 - 150 psi | 15 - 150 psi |
| Minimum Flow Rate | 0.5 GPM | 0.5 GPM | 0.5 GPM |
| Gas Supply Pressure | NG: 4.0" - 10.5" LP: 8.0" - 14.0" |
NG: 4.0" - 10.5" LP: 8.0" - 14.0" |
NG: 4.0" - 10.5" LP: 8.0" - 14.0" |
| Dimensions | 23.6"H x 13.8"W x 9.4"D | 24.2"H x 18.3"W x 9.4"D | 23.6"H x 13.8"W x 9.4"D |
| Weight | 47 Lbs. | 54 Lbs. | 47 Lbs. |
| Water Holding Capacity | 0.2 Gallon | 0.2 Gallon | 0.2 Gallon |
| Connection Sizes - Water Inlet |
3/4" | 3/4" | 3/4" |
| Connection Sizes - Hot Water Oulet |
3/4" | 3/4" | 3/4" |
| Connection Sizes - Gas Inlet |
3/4" | 3/4" | 3/4" |
| Power Supply - Supply |
120 VAC (60Hz) | 120 VAC (60Hz) | 120 VAC (60Hz) |
| Power Supply - Default Options |
NG: 62W LP: 75W Freeze Prevention: 145W |
NG: 85W LP: 100W Freeze Prevention: 161W |
NG: 64W LP: 77W Freeze Prevention: 145W |
| Temperature Settings - Settings |
100 - 150°F (5°F Intervals) 160, 170, 180°F (10°F Intervals) (14 Options) |
||
| Temperature Settings - Default Options |
120, 130, 140, 180°F (Original is 120°F) | ||
| Included Accessories | Remote Controller, Remote Controller Cord, Anchoring Screws | ||
| Noritz Residential 931 Series Models |
N-0931M | N-0931M-DV | N-0931M-OD |
| Gas Consumption - NG | 250,000 Max BTUH - 11,000 Min BTUH | ||
| Gas Consumption - LP | 250,000 Max BTUH - 11,000 Min BTUH | ||
| Max. Hot Water Capacity (45°F Rise) | 9.3 Gal./min. | 9.3 Gal./min. | 9.3 Gal./min. |
| Capacity Range | 0.5 - 11.1 Gal./Min. | 0.5 - 11.1 Gal./Min. | 0.5 - 11.1 Gal./Min. |
| Type - Installation | Indoor / Outdoor Wall Hung |
Indoor Wall Hung |
Outdoor Wall Hung |
| Type - Air Supply / Exhaust | Power Vented, 4" Flue | Direct Vent (Sealed Combustion) 4" Intake & Exhaust |
Power Vented |
| Ignition | Direct Ignition | Direct Ignition | Direct Ignition |
| Operating Pressure | 15 - 150 psi | 15 - 150 psi | 15 - 150 psi |
| Minimum Flow Rate | 0.5 GPM | 0.5 GPM | 0.5 GPM |
| Gas Supply Pressure | NG: 5.0" - 10.5" LP: 10.5 " - 14.0" |
NG: 5.0" - 10.5" LP: 10.5 " - 14.0" |
NG: 5.0" - 10.5" LP: 10.5 " - 14.0" |
| Dimensions | 24.2"H x 18.3"W x 9.4"D | 24.2"H x 18.3"W x 9.4"D | 24.2"H x 18.3"W x 9.4"D |
| Weight | 62 Lbs. | 62 Lbs. | 62 Lbs. |
| Water Holding Capacity | 0.3 Gallon | 0.3 Gallon | 0.3 Gallon |
| Connection Sizes - Water Inlet |
3/4" | 3/4" | 3/4" |
| Connection Sizes - Hot Water Oulet |
3/4" | 3/4" | 3/4" |
| Connection Sizes - Gas Inlet |
3/4" | 3/4" | 3/4" |
| Power Supply - Supply |
120 VAC (60Hz) | 120 VAC (60Hz) | 120 VAC (60Hz) |
| Power Supply - Default Options |
NG: 115W LP: 115W Freeze Prevention: 250W |
NG: 115W LP: 115W Freeze Prevention: 250W |
NG: 115W LP: 115W Freeze Prevention: 250W |
| Temperature Settings - Settings |
100 - 150°F (5°F Intervals) 160, 170, 180°F (14 Options) | ||
| Temperature Settings - Default Options |
120, 130, 140, 180°F (Original is 120°F) | ||
| Included Accessories | Remote Controller, Remote Controller Cord, Anchoring Screws | ||
Noritz commercial tankless water heaters are the only true commercial grade tankless water heaters on the market. Noritz was the first tankless gas water heater manufacturer to receive certification of compliance to the ASME BPV code. This means our commercial heaters are extensively tested to ensure they meet your commercial hot water demands. Noritz commercial units are Quick-Connect compatible for easy connection of two units, and are Multi-System ready, allowing up to 24 units to be linked together. In addition, Noritz commercial heaters are backed by one of the best warranties in the industry.
Noritz is the first company whose tankless water heaters received the prestigious ASME Code Symbol Stampes H, HLW and NB as being certified in compliance with the ASME BPV Code.
A single controller can handle multipul applications, while intergrating and managing all units in a multi-system configuration serving as a one-step solution for your commercial hot water demands.
| Noritz Commercial 931 Series Models |
N-0931M-ASME | N-0931M-DV-ASME |
| Gas Consumption - NG | 250,000 Max BTUH - 11,000 Min BTUH | |
| Gas Consumption - LP | 250,000 Max BTUH - 11,000 Min BTUH | |
| Max. Hot Water Capacity (45°F Rise) | 9.3 Gal./min. | 9.3 Gal./min. |
| Capacity Range | 0.5 - 11.1 Gal./Min. | 0.5 - 11.1 Gal./Min. |
| Type - Installation | Indoor / Outdoor Wall Hung |
Indoor Wall Hung |
| Type - Air Supply / Exhaust | Power Vented, 4" Flue | Direct Vent (Sealed Combustion) 4" Intake & Exhaust |
| Ignition | Direct Ignition | Direct Ignition |
| Operating Pressure | 15 - 150 psi | 15 - 150 psi |
| Minimum Flow Rate | 0.5 GPM | 0.5 GPM |
| Gas Supply Pressure | NG: 5.0" - 10.5" LP: 10.5 " - 14.0" |
NG: 5.0" - 10.5" LP: 10.5 " - 14.0" |
| Dimensions | 24.2"H x 18.3"W x 9.4"D | 24.2"H x 18.3"W x 9.4"D |
| Weight | 62 Lbs. | 62 Lbs. |
| Water Holding Capacity | 0.3 Gallon | 0.3 Gallon |
| Connection Sizes - Water Inlet |
3/4" | 3/4" |
| Connection Sizes - Hot Water Oulet |
3/4" | 3/4" |
| Connection Sizes - Gas Inlet |
3/4" | 3/4" |
| Power Supply - Supply |
120 VAC (60Hz) | 120 VAC (60Hz) |
| Power Supply - Default Options |
NG: 115W LP: 115W Freeze Prevention: 250W |
NG: 115W LP: 115W Freeze Prevention: 250W |
| Temperature Settings - Settings |
100 - 150°F (5°F Intervals) 160, 170, 180°F (14 Options) | |
| Temperature Settings - Default Options |
120, 130, 140, 180°F (Original is 120°F) | |
| Included Accessories | Remote Controller, Remote Controller Cord, Anchoring Screws | |
| Noritz Commercial 1321 Series Models |
N-1321M-ASME |
| Gas Consumption - NG | 380,000 Max BTUH - 22,500 Min BTUH |
| Gas Consumption - LP | 380,000 Max BTUH - 22,500 Min BTUH |
| Max. Hot Water Capacity (45°F Rise) | 13.2 Gal./min. |
| Capacity Range | 0.7 - 13.2 Gal./Min. |
| Type - Installation | Indoor / Outdoor Wall Hung |
| Type - Air Supply / Exhaust | Power Vented, 5 " Flue |
| Ignition | Direct Ignition |
| Operating Pressure | 15 - 150 psi |
| Minimum Flow Rate | 0.7 GPM |
| Gas Supply Pressure | NG: 5.0" - 10.5" LP: 10.5 " - 14.0" |
| Dimensions | 29.5"H x 19.1"W x 11.8 "D |
| Weight | 105 Lbs. |
| Water Holding Capacity | 0.6 Gallon |
| Connection Sizes - Water Inlet |
1" |
| Connection Sizes - Hot Water Oulet |
1" |
| Connection Sizes - Gas Inlet |
3/4" |
| Power Supply - Supply |
120 VAC (60Hz) |
| Power Supply - Default Options |
NG: 137W LP: 142W Freeze Prevention: 371W |
| Temperature Settings - Settings |
100 - 150°F (5°F Intervals) 160, 170, 180°F (14 Options) |
| Temperature Settings - Default Options |
120, 130, 140, 180°F (Original is 120°F) |
| Included Accessories | Remote Controller, Remote Controller Cord, Anchoring Screws |
Noritz is the first tankless water heater manufacturer to introduce tankless hydronic boilers. The Noritz NH Series consists of two models, the NH-2001-DV and the NH-1501-DV. These units share the same features as with our other heaters; energy efficiency, environmentally friendliness and of course the water is always hot whenever you need it. Both models are capable of offering nine temperature settings of endless hot water for hydronic heating. These tankless hydronic boilers are dramatically smaller in size, weighing only 66 pounds compared to conventional boilers' typical weight of more than 300 pounds, giving your home more space to enjoy.
The Noritz NH Series can provide quiet and constant heat to your home by providing hot water to panel radiators, baseboards and radiant flooring. Hydronic heating with the NH Boiler gives a higher level of warmth and comfort than forced air systems because they do not stir up allergens or dust in the home.
| Hydronic Boilers NH Series Models |
NH-1501-DV | NH-2001-DV |
| Gas Consumption - NG | 150,000 Max BTUH - 55,500 Min BTUH | 199,9000 Max BTUH - 55,500 Min BTUH |
| Gas Consumption - LP | 150,000 Max BTUH - 55,500 Min BTUH | 199,9000 Max BTUH - 55,500 Min BTUH |
| Standard Output | 45,500 - 122,400 BTUH | 45,500 - 163,100 BTUH |
| Type - Installation | Indoor Wall Hung | |
| Type - Air Supply / Exhaust | Direct Vent / Sealed Combustion | |
| Type - Heating Method | Closed type hot-water circulation method | |
| Ignition | Direct Ignition | |
| Operating Pressure | 15 - 150 psi | |
| Relief Valve Setting | 30 psi | |
| Amount of Boiler Water Used | 4 - 17 GPM (bypass minimum-flow rate : 2.5GPM) | |
| Dimensions | 24.2"H x 18.3"W x 9.4"D | |
| Weight | 65.3 Lbs. | |
| Water Holding Capacity | 0.4 Gallon | |
| Connection Sizes - Water Inlet |
1" | |
| Connection Sizes - Hot Water Oulet |
1" | |
| Connection Sizes - Gas Inlet |
3/4" | |
| Power Supply - Supply |
120 VAC (60Hz) | |
| Power Supply - Default Options |
NG: 93W LP: 93W | |
| Temperature Settings - Settings |
140 - 170°F (5°F Intervals) 176, 180°F (9 Options) | |
| Temperature Settings - Default Options |
60 - 80°C (5°C Intervals) 83°C (6 Options) | |
| Included Accessories | Pressure & Temperature Gauge, Safety Relief 9 Option Valve (valve, fitting and gasket), Achoring Screws, Terminals | |
| AFUE | NG: 82.2% LP: 83.0% | NG: 83% LP: 82.8% |
For additional information please call 1-866-361-7355 or e-mail us