Noritz EZ98DV (GQ-C2861WX-FF-1 US) is a gas tankless water heater from Noritz rated 5.3 GPM at a 0.98 UEF — 173 therms/yr certified use, 180k BTU/h input.
Efficiency
Uniform Energy Factor (UEF)
0.98
Annual gas use (natural gas)
173 therms/yr
Recovery efficiency
99 %
Annual propane use
189.07 gal/yr
General
Fuel
Natural Gas, Propane
Capacity
Max flow rate
5.3 GPM
Draw pattern
High
Minimum activation flow
0.4 GPM
Performance
Gas input rate
180 kBTU/h
Installation
Max current draw
0.7 A
Vent type
Power Direct Vent
Vent size
2 / 3
Smart features
Smart / connected capable
No
Dimensions
Height
26.1 in
Diameter
18.1 in
Width
18.1 in
Depth
11.8 in
Certification
ENERGY STAR certified
Yes
Real flow rate by climate
A tankless heater's usable flow depends on how far it must raise incoming water
temperature. Sustained hot-water flow of the Noritz EZ98DV (GQ-C2861WX-FF-1 US) at common temperature
rises (a typical shower uses about 2 GPM of mixed water):
The Noritz EZ98DV (GQ-C2861WX-FF-1 US) is certified hardware that Noritz and its partner brands
publish under 2 names. The same specifications apply to every
variant:
Is the Noritz EZ98DV (GQ-C2861WX-FF-1 US) ENERGY STAR certified?
Yes, the Noritz EZ98DV (GQ-C2861WX-FF-1 US) holds a current ENERGY STAR certification for water heating efficiency (UEF 0.98).
How much does the Noritz EZ98DV (GQ-C2861WX-FF-1 US) cost to run per year?
About $251 per year at national average energy rates, based on its certified annual energy use under the DOE test draw pattern. Your rate and usage change this figure.
What venting does the Noritz EZ98DV (GQ-C2861WX-FF-1 US) use?
The Noritz EZ98DV (GQ-C2861WX-FF-1 US) uses Power Direct Vent venting with 2 / 3 in vent connections. Matching the existing vent type is usually the cheapest replacement path.
Is the Noritz EZ98DV (GQ-C2861WX-FF-1 US) a smart water heater?
No, the Noritz EZ98DV (GQ-C2861WX-FF-1 US) is not connected-capable — it has no app connectivity or demand-response support.
