For our luxury line, we have the 931 series which can provide endless hot water for up to 4+ showers.  And with its Quick-Connect system, two units can be linked together to meet the high demand of today’s luxury homes.  To accommodate the higher flow rate demand, these units have a dual flame burner, a redesigned heat exchanger and 25% thicker copper piping.  No other tankless water heater in its class can beat its performance, dependability, and quality.  Built-in features include safety lock-out, freeze protection, and high elevation adjustment. 

Features:

• Safety lock out - Default max. 120 degrees (refer to owner's manual for higher temp)
• Dual flame burner - Noritz exclusive!  Minimizes temperature fluctuations.
• Fully modulating - Automatically adjusts burner level accordingly.
• Turbo Flow - Up to 11.1 GPM @ 35 degree temperature rise (9.3 GPM @ 45 degree rise).
• Quick Connect - Doubles the output by connecting two identical heaters.
• Direct ignition - No standby pilot light.
• Thermal fuse - Automatic overheat protection system.
  
• Resin coated PC board - Increases durability and protection from elements.
• Automatic air regulator - Monitors internal temperature/maximizes burner efficiency.
• Fully modulating - Automatically adjusts burner level accordingly.
• Commercial grade heat exchanger - 25% thicker piping than our competition.

Noritz is proud to introduce our most efficient tankless heaters, the next generation in tankless technology - condensing heaters.  This innovation utilizes a dual heat exchanger, a fusion of stainless steel and copper heat exchangers.  The 100% stainless steel component captures the residual heat from the exhaust temperature to preheat the incoming water before it runs through the main copper heat exchanger.  This results in dramatic reduction of carbon dioxide and increases the heater's efficiency level to over 93%!  Another benefit of this technology is lower exhaust temperatures, which means less costly PVC can be used for its venting. A PVC adapter is built into the heater for easy installation.

Features:

• Condensing technology - The most advanced Noritz unit, 93% efficiency level!
• Combi-system set-up - Open loop system functionality for both potable water heating and space heating combination system.
• Safety lock out - Default max. 120 degrees (refer to owner's manual for higher temp)
• Dual flame burner - Noritz exclusive!  Minimizes temperature fluctuations.
• Fully modulating - Automatically adjusts burner level accordingly.
• Dual heat exchanger - 100% stainless steel corrosion resistant heat exchanger fused with a commercial grade copper heat exchanger.
  
• Turbo Flow - Up to 11.1 GPM @ 35 degree temperature rise (8.4 GPM @ 45 degree rise).
• Quick Connect - Doubles output by connecting 2 identical units with a single cable.
• Multi System - Up to 24 units can be linked and operated by a single system controller.
• Direct ignition - No standby pilot light.
• Thermal fuse - Automatic overheat protection system.
  
• Resin coated PC board - Increases durability and protection from elements.
• Automatic air regulator - Monitors internal temperature/maximizes burner efficiency.
• Neutralizer included - Built-in neutralizing system for condensation.
• Commercial grade heat exchanger - 25% thicker piping than our competition.

Noritz is proud to introduce our most efficient tankless heaters, the next generation in tankless technology - condensing heaters.  This innovation utilizes a dual heat exchanger, a fusion of stainless steel and copper heat exchangers.  The 100% stainless steel component captures the residual heat from the exhaust temperature to preheat the incoming water before it runs through the main copper heat exchanger.  This results in dramatic reduction of carbon dioxide and increases the heater's efficiency level to over 93%!  Another benefit of this technology is lower exhaust temperatures, which means less costly PVC can be used for its venting.

Features:

• Condensing technology - The most advanced Noritz unit, 93% efficiency level!
• Combi-system set-up - Open loop system functionality for both potable water heating and space heating combination system.
• Safety lock out - Default max. 120 degrees (refer to owner's manual for higher temp)
• Dual flame burner - Noritz exclusive!  Minimizes temperature fluctuations.
• Fully modulating - Automatically adjusts burner level accordingly.
• Dual heat exchanger - 100% stainless steel corrosion resistant heat exchanger fused with a commercial grade copper heat exchanger.
  
• Turbo Flow - Up to 11.1 GPM @ 35 degree temperature rise (8.4 GPM @ 45 degree rise).
• Quick Connect - Doubles output by connecting 2 identical units with a single cable.
• Multi System - Up to 24 units can be linked and operated by a single system controller.
• Direct ignition - No standby pilot light.
• Thermal fuse - Automatic overheat protection system.
  
• Resin coated PC board - Increases durability and protection from elements.
• Automatic air regulator - Monitors internal temperature/maximizes burner efficiency.
• Neutralizer included - Built-in neutralizing system for condensation.
• Commercial grade heat exchanger - 25% thicker piping than our competition.

With more power than any tankless water heater in its class, the 751 series is ideal for mid-size homes with up to 4 showers.  Built-in features include safety lock-out, freeze protection, and high elevation adjustment.

Features:

• Safety lock out - Default max. 120 degrees (refer to owner's manual for higher temp)
• Dual flame burner - Noritz exclusive!  Minimizes temperature fluctuations.
• Fully modulating - Automatically adjusts burner level accordingly.
• Turbo Flow - Up to 9.8 GPM @ 35 degree temperature rise (7.5 GPM @ 45 degree rise).
• Quick Connect - Doubles the output by connecting two identical heaters.
• Direct ignition - No standby pilot light.
• Thermal fuse - Automatic overheat protection system.
  
• Resin coated PC board - Increases durability and protection from elements.
• Automatic air regulator - Monitors internal temperature/maximizes burner efficiency.
• Commercial grade heat exchanger - 25% thicker piping than our competition.

Our 631 series is perfect for homes with 1-3 showers.  When properly sized, they provide an endless supply of hot water to an entire home.  With state-of-the-art gas combustion technology, Noritz burners maximize output and provide temperature stability while maintaining low emissions.  Built-in features include safety lock-out, freeze protection, and high elevation adjustment. 

Features:

• Safety lock out - Default max. 120 degrees (refer to owner's manual for higher temp)
• Standard burner - High performance single flame burner.
• Fully modulating burner - Automatically adjusts burner level accordingly.
• Turbo Flow - Up to 7.1 GPM @ 35 degree temperature rise (6.3 GPM @ 45 degree rise).
• Direct ignition - No standby pilot light.
• Thermal fuse - Automatic overheat protection system.
  
• Resin coated PC board - Increases durability and protection from elements.
• Automatic air regulator - Monitors internal temperature/maximizes burner efficiency.
• Resin coated PC board - Increases durability and protection from elements.

Our 531 series is perfect for apartments, condominiums and townhouses with 1-2 showers.  When properly sized, they provide an endless supply of hot water and are designed to be more efficient than traditional tank-type water heaters.  These compact heaters will save space without compromising power. Built-in features include safety lock-out, freeze protection, and high elevation adjustment.

Features:

• Safety lock out - Default max. 120 degrees (refer to owner's manual for higher temp)
• Standard burner - High performance single flame burner.
  
• Fully modulating burner - Automatically adjusts burner level accordingly.
• Turbo Flow - Up to 6.6 GPM @ 35 degree temperature rise (5.3 GPM @ 45 degree rise).
• Direct ignition - No standby pilot light.
• Thermal fuse - Automatic overheat protection system.
  
• Resin coated PC board - Increases durability and protection from elements.
• Automatic air regulator - Monitors internal temperature/maximizes burner efficiency.
• Resin coated PC board - Increases durability and protection from elements.