Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Noritz NRC711-DV and Noritz NRC98DV are two tankless water heaters from the Noritz NRC Series Tankless Water Heaters line. Published ratings: Noritz NRC711-DV at 15–157 MBH input and 0.89 UEF; Noritz NRC98DV at 16–180 MBH input and 0.9 UEF. Noritz NRC98DV lists 23 MBH more input than Noritz NRC711-DV (180 MBH against 157 MBH). Noritz NRC98DV carries the higher published UEF at 0.9 UEF, against 0.89 UEF. Noritz NRC98DV lists 17 lb more shipping weight than Noritz NRC711-DV (58 lb against 41 lb).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Noritz NRC711-DV | Noritz NRC98DV |
|---|---|---|
| Input, minimum | 15 MBH | 16 MBH |
| Input, maximum | 157 MBH | 180 MBH |
| Weight | 41 lb | 58 lb |
| Height | 23.6 in | 24.2 in |
| Width | 13.8 in | 18.3 in |
| Depth | 6.7 in | 9.4 in |
| Power supply | 120 VAC (60 Hz) | 120 VAC (60 Hz) |
| Uniform Energy Factor (UEF) | 0.89 UEF | 0.9 UEF |
| Flow rate | 0.5 – 7.1 GPM | 0.5 – 9.8 GPM |
| Technology | High-efficiency tankless water heater | Condensing tankless water heater |
| Temperature settings | 115–140°F | 115–140°F |
| Install location | Indoor only | Indoor only |
Published ratings: the Noritz NRC711-DV is rated 15–157 MBH input and 0.89 UEF; the Noritz NRC98DV is rated 16–180 MBH input and 0.9 UEF. Noritz NRC98DV lists 23 MBH more input than Noritz NRC711-DV (180 MBH against 157 MBH). Noritz NRC98DV carries the higher published UEF at 0.9 UEF, against 0.89 UEF.
Noritz NRC98DV lists 17 lb more shipping weight than Noritz NRC711-DV (58 lb against 41 lb). The height differs: the Noritz NRC711-DV lists 23.6 in, while the Noritz NRC98DV lists 24.2 in. The width differs: the Noritz NRC711-DV lists 13.8 in, while the Noritz NRC98DV lists 18.3 in. The depth differs: the Noritz NRC711-DV lists 6.7 in, while the Noritz NRC98DV lists 9.4 in.
Both records print the same power draw (120 VAC (60 Hz)), temperature settings (115–140°F) and install location (Indoor only), per the cited sources.
Noritz
The Noritz NRC711-DV is a high-efficiency tankless water heater in the NRC Series — a DHW-only appliance, not a boiler — firing 15,000 to 157,000 BTU/h with 7.1 GPM maximum flow at 0.89 UEF.
Noritz
The Noritz NRC98DV is a condensing tankless water heater in the NRC Series — a DHW-only appliance, not a boiler — firing 16,000 to 180,000 BTU/h with 9.8 GPM maximum flow at 0.9 UEF.
The Noritz NRC98DV lists 180 MBH, against 157 MBH on the Noritz NRC711-DV, per the cited documentation.
The Noritz NRC98DV carries the higher published UEF at 0.9 UEF, against 0.89 UEF.
It ships at 58 lb against 41 lb for the Noritz NRC711-DV, per the cited sources.
A consultation includes a heat-loss review so the size is right the first time.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.