WattCost

Data through April 2026

Computer Monitors · 88 certified models

34-Inch Computer Monitors

Filtering to 34-inch computer monitors narrows the field to 88 of the 1,482 certified computer monitors in this data, ranging $9.65–$23 a year at national-average electricity rates (median $17).

The 50 most efficient (of 88)

Other size facets

Questions, answered with the data

How much does it cost to run 34-inch computer monitors?
Among 88 certified models in this data, 34-inch computer monitors cost $9.65 to $23 a year to run at the U.S. average electricity rate (18.8¢/kWh) — a median of $17.
Do 34-inch computer monitors cost more or less than the average computer monitor?
The median model here runs $17 a year, 101% more than the $8.49 median across all certified computer monitors.
What's the cheapest model among 34-inch computer monitors?
The EIZO FlexScan EV3451X costs about $9.65 a year at the U.S. average rate (51 kWh/yr) — the lowest certified figure in this group.
What does the certified annual-kWh figure assume for computer monitors?
The certified annual kWh (TEC) assumes the monitor is on 35% of the day and asleep the other 65%, per the ENERGY STAR test basis.

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