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Today's Hours 8am - 11pm estNoritz 9.8 GPM 199,900 BTU Residential Natural Gas Direct Vent Concentric Tankless Water Heater (.82 UEF)
By
Noritz
In stock
Model
NR98-DVC-NG
ID
236564
Was $3,131.19 Your Low Price Special Price $1,658.00
Product Features
- High-Capacity Output: Delivers up to 9.8 GPM for multiple fixtures.
- Flexible Venting: Available in Direct Vent, Single Vent, or Outdoor models.
- Commercial-Grade Heat Exchanger: 25% thicker copper piping for durability.
- Advanced Controls: Programmable remote with temp adjustment, freeze protection, and scale detection.
- Expandable Capacity: Quick-Connectâ„¢ links two matching units.
- Low-NOx Performance: Meets emissions standards for reliable hot water.
The Noritz NR98-DVC-NG 9.8 GPM 199,900 BTU Residential Natural Gas Direct Vent Concentric Tankless Water Heater delivers powerful, on-demand hot water while helping reduce energy consumption by heating water only when it is needed. Unlike traditional storage tank water heaters that continuously maintain a supply of heated water, the NR98-DVC-NG heats water as it flows through the unit, providing an endless supply of hot water while eliminating standby energy loss. It is an excellent solution for larger homes with multiple bathrooms and higher simultaneous hot water demands.
Designed for indoor installation, the NR98-DVC-NG features a direct vent concentric system that safely draws combustion air from outdoors while exhausting combustion gases through a single 5-inch/3-inch Noritz stainless steel concentric vent assembly. Delivering up to 199,900 BTU of natural gas heating power and a maximum flow rate of 9.8 gallons per minute, this compact wall-mounted tankless water heater combines commercial-grade durability, advanced safety features, and precise temperature control for years of dependable residential performance.
Product Features:
- 199,900 BTU Maximum Input: Provides powerful natural gas heating capacity for larger residential homes with high simultaneous hot water demand.
- Up to 9.8 GPM Flow Rate: Delivers continuous hot water to multiple showers, faucets, dishwashers, washing machines, and other fixtures simultaneously, depending on incoming water temperature and required temperature rise.
- Direct Vent Concentric Installation: Designed for indoor installation using an approved 5-inch/3-inch Noritz stainless steel concentric vent system that combines combustion air intake and exhaust into a single vent assembly.
- Non-Condensing Design: Provides dependable on-demand performance with a Uniform Energy Factor (UEF) of 0.82 while heating water only when needed.
- Commercial-Grade Copper Heat Exchanger: Manufactured with commercial-grade copper tubing that is approximately 25% thicker than many standard residential heat exchangers for enhanced durability, improved heat transfer, and long service life.
- Fully Modulating Burner: Automatically adjusts from approximately 16,000 to 199,900 BTU to maintain consistent outlet water temperatures while maximizing energy efficiency.
- Adjustable Temperature Settings: Includes a remote thermostat with adjustable temperature settings from 100°F to 140°F in 5°F increments, allowing precise residential temperature control.
- Quick Connect Compatible: Two identical NR98 Series units can be connected using the optional Noritz Quick Connect Cord to nearly double available hot water capacity without requiring an additional controller.
- Scale Detection Function: Built-in maintenance reminder notifies homeowners when flushing and descaling are recommended to help maintain peak efficiency and extend equipment life.
- Freeze Protection: Built-in freeze protection helps safeguard the heat exchanger during freezing temperatures when installed according to manufacturer requirements and connected to electrical power.
- Advanced Safety Features: Includes flame sensing, overheat prevention, fan rotation monitoring, lightning protection, temperature lockout, thermal fuse protection, high elevation adjustment, and advanced self-diagnostic monitoring.
- Compact Wall-Mounted Cabinet: Space-saving design allows flexible installation while providing convenient service access.
What Is an Isolation Valve Kit?
An isolation valve kit is a recommended accessory for every tankless water heater installation. These valves connect to the hot and cold water lines and allow the water heater to be isolated for flushing, descaling, maintenance, or servicing without shutting off water to the rest of the home.
Routine flushing removes mineral buildup that naturally accumulates inside the heat exchanger over time, particularly in areas with hard water. Installing isolation valves makes annual maintenance significantly easier while helping preserve efficiency, improve performance, and extend the life of the water heater.
Short vs. Long Isolation Valve Kit
For the Noritz NR98-DVC-NG, only one isolation valve kit is required depending on the available installation space.
- IK-WV-200-5-TH-S Short Isolation Valve Kit: Recommended for installations where available space is limited or a compact plumbing arrangement is preferred.
- IK-WV-200-5-TH-L Long Isolation Valve Kit: Ideal when additional clearance is available, allowing easier future maintenance and servicing.
Both isolation valve kits include durable 3/4-inch threaded hot and cold isolation valves together with a lead-free pressure relief valve. The correct kit depends on the installation layout and available working space.
Understanding Tankless Water Heater Sizing
Unlike traditional storage tank water heaters, tankless water heaters are sized using flow rate (GPM) and temperature rise rather than storage capacity. Flow rate represents the amount of hot water the unit can produce each minute, while temperature rise is the difference between the incoming groundwater temperature and your desired outlet temperature.
Always size a tankless water heater using your area's winter groundwater temperature, since colder incoming water requires more heating capacity and reduces the maximum available flow rate.
For example, if your desired hot water temperature is 120°F and the incoming groundwater temperature is 50°F, the required temperature rise is:
120°F − 50°F = 70°F Temperature Rise
Use the Noritz flow rate chart included with the product literature to determine the expected hot water output at your required temperature rise. This helps ensure the water heater is properly sized for your household's simultaneous hot water demand.
Warranty
The NR98-DVC-NG includes Noritz's residential limited warranty featuring a 12-year heat exchanger warranty for standard residential installations, a 5-year parts warranty, and a 1-year reasonable labor warranty. When installed with a controlled recirculation system using a minimum aquastat pump control, the heat exchanger warranty remains 12 years or 6,500 operational hours, whichever occurs first. Always verify natural gas supply, approved concentric venting requirements, electrical requirements, water quality, local plumbing and mechanical codes, and all required accessories prior to installation.
Dependable Whole-Home Hot Water with Proven Tankless Technology
The Noritz NR98-SV-NG is a powerful residential tankless water heater designed to provide a reliable and continuous supply of hot water for busy households. Delivering up to 9.8 gallons per minute and featuring a maximum input of 199,900 BTU, this natural gas model is well-suited for homes with multiple bathrooms, large families, and simultaneous hot water demands.
Designed with a single vent configuration, the NR98-SV-NG offers installation flexibility for indoor applications while maintaining a compact wall-mounted footprint. Its space-saving design allows homeowners to reclaim valuable utility room space while enjoying the benefits of modern tankless water heating technology.
By heating water only when needed, the NR98-SV-NG eliminates the standby energy losses associated with traditional tank-style water heaters. Whether supporting back-to-back showers, filling large tubs, or supplying hot water to multiple appliances at once, this unit delivers consistent comfort and dependable performance with a Uniform Energy Factor (UEF) of 0.82.
Why Homeowners Choose the Noritz NR98-SV-NG
Built to Handle High Household Demand
- Produces up to 9.8 GPM to support multiple hot water activities simultaneously.
- Ideal for larger homes with several bathrooms and frequent hot water usage.
- Provides dependable performance during busy mornings, evenings, and peak-demand periods.
Flexible Single Vent Installation
- Designed for indoor installations utilizing a dedicated venting system.
- Offers versatile placement options for utility rooms, garages, and mechanical spaces.
- Compact wall-mounted design helps maximize available floor space.
Comfort Without Interruption
- Provides a continuous supply of hot water whenever fixtures are in use.
- Helps eliminate the inconvenience of running out of hot water during household routines.
- Supports showers, dishwashers, washing machines, and other fixtures with confidence.
High-Capacity Heating Performance
- 199,900 BTU maximum input delivers rapid and responsive water heating.
- Engineered to maintain stable performance as household demand changes.
- Designed to keep pace with modern family lifestyles.
Efficient, Space-Saving Upgrade
- 0.82 UEF rating supports efficient day-to-day operation.
- Tankless design reduces energy waste associated with storing heated water.
- Provides a practical long-term solution for homeowners seeking comfort, efficiency, and reliability.
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