Noritz NRC98-DV-NG Eco Tough Indoor Tankless Water Heater, 4" Direct Vent - Natural Gas - 180,000 BTU

SKU: 40309
Brand: Noritz Model: NRC98-DV-NG Condition: New

Noritz NRC98-DV-NG Tankless Water Heaters

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The Noritz NRC98-DV-NG Eco Tough Indoor Tankless Water Heater is part of the next generation of energy efficient condensing tankless water heaters by Noritz.  The Noritz NRC98-DV-NG Eco Tough Indoor Tankless Water Heater utilizes a dual heat exchanger that is a fusion of stainless steel and copper heat exchangers.  This 100% stainless steel component is designed to capture he residual heat from the exhaust temperature in order to preheat the water that enters the unit before running through the main copper heat exchanger.  By utilizes the exhaust heat this great tankless water heater boasts an increased efficiency level that exceeds 93% and also reduces the carbon dioxide.  The Noritz NRC98-DV-NG Eco Tough Indoor Tankless Water Heater also has lower exhaust temperatures as well which allows you to use less expensive PVC for venting.  This great Noritz tankless water heater features a PVC adaptor that is built-in to make installation simple.  The Noritz NRC98-DV-NG Eco Tough Indoor Tankless Water Heater is the highest performing condensing unit available, and is also the greenest and coolest tankless unit available.

The Noritz NRC98-DV-NG Eco Tough Indoor Tankless Water Heater has a gas consumption rating that ranges from 16,000 BTU to 180,000 BTU, and the energy factor of this unit is 0.91.  This amazing Noritz tankless water heater is designed to be wall mounted indoors.  The Noritz NRC98-DV-NG Eco Tough Indoor Tankless Water Heater also offers multiple default temperatures, you can easily select from 120 (manufacturer default setting), 130, or 140 degrees Fahrenheit.  The Noritz NRC98-DV-NG Eco Tough Indoor Tankless Water Heater features 3/4" connections for the gas inlet, water inlet, and hot water outlet.  The condensate drain uses a 1/2" threaded connection.  The casing of this amazing tankless water heater is made of a zincified steel plate that has a polyester coating.  The first heat exchanger is made up of copper sheeting and copper tubing, while the second heat exchanger is constructed of stainless steel sheeting and stainless steel tubing.  This great tankless water heater utilizes direct ignition thus eliminating the need for a standby pilot light.  This unit measures 24.2" (H) x 18.3" (W) x 9.4" (D), and is backed by a twelve year manufacturer warranty.

Additional Information:

Noritz Eco Tough Brochure

Noritz 2012 Catalog


• Condensing technology
• Combi-system set-up
• Safety lock out
• Dual flame burner
• Fully modulating
• Dual heat exchanger
• Turbo Flow
• Quick Connect
• Multi System
• Direct ignition
• Thermal fuse
• Resin coated PC board
• Automatic air regulator
• Neutralizer included
• Commercial grade heat exchanger
• Compact Design


• Model: NRC98-DV-NG
• Gas Type: Natural Gas
• Gas Consumption: Max: 180,000 BTU/Hr - Min: 16,000 BTU/Hr
• Thermal Efficiency: 93%
• Energy Factor: 0.91
• Maximum Hot Water Capacity: 50 degree F Rise 6.7 GPM
• Capacity Range: 0.5-9.8 GPM
• Temperature Settings (Deg): 100-140 F (In 5 F intervals)
• Default Temperature Options (Deg): 120,130, &140 F (Original is 120 F)
• Installation: Indoor Wall Mounted
• Air Supply/Exhaust: Power Vented
• Water Inlet: 3/4"
• Hot Water Outlet: 3/4"
• Gas Inlet: 3/4"
• Condensate Drain: 1/2" Threaded
• Suppy: 120 VAC (60Hz)
• Consumption: 68W Freeze Prevention 213W
• Casing: Zincified Steel Plate/Polyester Coating
• Flue Collar: Stainless Steel
• First Heat Exchanger: Copper Sheeting, Copper Tubing
• Secondary Heat Exchanger: Stainless Steel Sheeting, Stainless Steel Tubing
• Ignition: Direct Ignition
• Operating Pressure: 15-150 psi
• Minimum Flow Rate: 0.5 GPM
• Water Holding Capacity: 0.5 Gallon
• Dimensions: 24.2" (H) x 18.3" (W) x 9.4" (D)

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Questions & Answers

Is the length still the same with one elbow? 24'... Or can a few more feet be eked out of it?

by Edward S. on 08-28-2012

The published guidelines per the manufacturer are 24 ft of total ducting with 6 elbows. Given that the elbows can reduce anyhwere from 10-25% efficiency, you may be able to add a few feet longer and be Ok. Remeber, if you need an extra boost getting the venting out of your required length of ducting, a secondary booster duct fan can be installed. (click here to view Booster Fan)

With this booster fan, the intergrated sensor will know when additional air movement is needed and can add the additional air movement up to 167CFM. This will allow a greater distance than 24 ft of ducting if used in conjunction with the forced air venting of the Noritz tankless unit.

on 08-29-2012

What is the longest run for the exhaust that is allowed with this unit?

by Edward S. on 08-24-2012

The Noritz NRC98-DV-NG can be installed with up to 24ft of ducting with  up to 6 elbows. Additional venting will require a secondary ventillation booster fan. You can use either 3" or 4" diameter PVC for ducting.

on 08-27-2012
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