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Comparison

Noritz EZ71DV vs Noritz EZ111DV

Verdict in brief

The Noritz EZ71DV and Noritz EZ111DV are both tankless water heaters in the Noritz EZ Series Tankless Water Heaters line. Published ratings: Noritz EZ71DV at 12.8–160 MBH input and 0.98 UEF; Noritz EZ111DV at 12.8–199.9 MBH input and 0.98 UEF. Noritz EZ111DV lists 39.9 MBH more input than Noritz EZ71DV (199.9 MBH against 160 MBH). Both list the same published UEF of 0.98 UEF. Both list the same published shipping weight of 60 lb.

Side by side

Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.

Comparison of Noritz EZ71DV and Noritz EZ111DV
SpecificationNoritz EZ71DVNoritz EZ111DV
Input, minimum12.8 MBH12.8 MBH
Input, maximum160 MBH199.9 MBH
Weight60 lb60 lb
Height26.1 in26.1 in
Width18.1 in18.1 in
Depth11.8 in11.8 in
Power supply120 VAC (60 Hz)120 VAC (60 Hz)
Uniform Energy Factor (UEF)0.98 UEF0.98 UEF
Flow rate0.4 – 9 GPM0.4 – 11.1 GPM
TechnologyCondensing tankless water heaterCondensing tankless water heater
Temperature settings100–140°F100–140°F
Install locationIndoor & outdoorIndoor & outdoor

What actually separates them

Published ratings: the Noritz EZ71DV is rated 12.8–160 MBH input and 0.98 UEF; the Noritz EZ111DV is rated 12.8–199.9 MBH input and 0.98 UEF. Noritz EZ111DV lists 39.9 MBH more input than Noritz EZ71DV (199.9 MBH against 160 MBH). Both list the same published UEF of 0.98 UEF.

The flow rate differs: the Noritz EZ71DV lists 0.4 – 9 GPM, while the Noritz EZ111DV lists 0.4 – 11.1 GPM.

Both records print the same input (12.8 MBH), shipping weight (60 lb), height (26.1 in) and width (18.1 in), per the cited sources.

CurrentCanadian status unknown
Input
12.8–160 MBH
Output (max)
AFUE

The Noritz EZ71DV is a condensing tankless water heater in the EZ Series — a DHW-only appliance, not a boiler — firing 12,800 to 160,000 BTU/h with 9 GPM maximum flow at 0.98 UEF.

Natural gasPropaneDHW-only (tankless)
CurrentCanadian status unknown
Input
12.8–199.9 MBH
Output (max)
AFUE

The Noritz EZ111DV is a condensing tankless water heater in the EZ Series — a DHW-only appliance, not a boiler — firing 12,800 to 199,900 BTU/h with 11.1 GPM maximum flow at 0.98 UEF.

Natural gasPropaneDHW-only (tankless)

Frequently asked questions

Which of the two has the higher maximum input?

The Noritz EZ111DV lists 199.9 MBH, against 160 MBH on the Noritz EZ71DV, per the cited documentation.

Which model is more efficient?

Both list the same UEF of 0.98 UEF.

Not sure which one fits your home?

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.

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