Noritz EZ111DV (GQ-C3259WX-FF US) is a gas tankless water heater from Noritz rated 5.8 GPM at a 0.96 UEF — 176 therms/yr certified use, 199k BTU/h input.
Efficiency
Uniform Energy Factor (UEF)
0.96
Annual gas use (natural gas)
176 therms/yr
Annual propane use
192.35 gal/yr
General
Fuel
Natural Gas, Propane
Capacity
Max flow rate
5.8 GPM
Draw pattern
High
Minimum activation flow
0.5 GPM
Performance
Gas input rate
199 kBTU/h
Installation
Max current draw
0.8 A
Vent type
Direct Vent
Vent size
2 / 3
Smart features
Smart / connected capable
No
Dimensions
Height
27 in
Width
18.5 in
Depth
12.8 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 EZ111DV (GQ-C3259WX-FF US) at common temperature
rises (a typical shower uses about 2 GPM of mixed water):
Temperature rise
Climate
Sustained flow
Simultaneous showers
45 °F
Warm climate (~75 °F groundwater)
5.8 GPM
2
55 °F
Mild climate (~65 °F groundwater)
5.8 GPM
2
70 °F
Cold climate (~50 °F groundwater)
5.5 GPM
2
77 °F
DOE test condition
5 GPM
2
Also sold as
The Noritz EZ111DV (GQ-C3259WX-FF US) is certified hardware that Noritz and its partner brands
publish under 2 names. The same specifications apply to every
variant:
Is the Noritz EZ111DV (GQ-C3259WX-FF US) ENERGY STAR certified?
Yes, the Noritz EZ111DV (GQ-C3259WX-FF US) holds a current ENERGY STAR certification for water heating efficiency (UEF 0.96).
How much does the Noritz EZ111DV (GQ-C3259WX-FF US) cost to run per year?
About $255 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 EZ111DV (GQ-C3259WX-FF US) use?
The Noritz EZ111DV (GQ-C3259WX-FF US) uses Direct Vent venting with 2 / 3 in vent connections. Matching the existing vent type is usually the cheapest replacement path.
Is the Noritz EZ111DV (GQ-C3259WX-FF US) a smart water heater?
No, the Noritz EZ111DV (GQ-C3259WX-FF US) is not connected-capable — it has no app connectivity or demand-response support.
