proTOUGH NR981-SV Residential Tankless Water Heater

With more power than any tankless water heater in its class, the NR981 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. PVC CANNOT be used for venting.

These units offer several innovations:

• 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.