description Noritz NR98SV Overview
The Noritz NR98SV is a residential, non-condensing tankless gas water heater with a maximum advertised flow rate of 9.8 gallons per minute under favorable temperature conditions. It heats water as it is needed rather than storing it in a tank, and the SV designation identifies a model configured for indoor installation with direct venting. It is intended for homes whose gas supply, venting arrangement, groundwater temperature, and peak hot-water demand match the unit's requirements.
help Noritz NR98SV FAQ
What type of water heater is the Noritz NR98SV?
The NR98SV is an indoor, non-condensing, tankless gas water heater with a maximum input of 199,900 BTU per hour. Noritz lists a UEF of 0.82, a 0.5 GPM minimum flow, and a 9.8 GPM maximum flow range. [Noritz NR98SV](https://noritz.com/products/gq-2857wx-f-us-nr98sv)
Does the NR98SV really provide 9.8 GPM of hot water?
The 9.8 GPM figure is the unit's maximum flow range under favorable conditions, not a guaranteed rate at every temperature rise. Noritz's owner guide lists about 7.5 GPM at a 45 F rise, while hotter output reduces the available flow. [Noritz owner guide](https://support-legacy.noritz.com/download.php?field=OwnersGuide&file=Literature+Page%2FOwners+Guide%2FNR98+OG.pdf)
What venting does an indoor Noritz NR98SV require?
The NR98SV is an indoor power-vented unit, and its installation documentation specifies the venting system and clearances that apply to the model. It also uses 120 VAC power and a copper heat exchanger, so replacing a storage heater is not simply a water-pipe swap. [Noritz owner guide](https://support-legacy.noritz.com/download.php?field=OwnersGuide&file=Literature+Page%2FOwners+Guide%2FNR98+OG.pdf)
What warranty does the NR98SV have?
Noritz lists a 12-year heat-exchanger warranty, a five-year parts warranty, and one year of reasonable labor coverage for residential installations. The unit also includes a service reminder and high-altitude adjustment features. [Noritz product guide](https://noritz-www-public.s3.us-west-1.amazonaws.com/wp-content/uploads/2024/03/2024_Product-Guide_2.0_Web.pdf)
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