Model
Gree GJC10BU-A6DRNJ2A
Rank #194 means 193 of the 404 room air conditioner models we track cost less to run each year; the 52nd efficiency percentile means it uses less energy for its size than 52% of those models.
What does the Gree GJC10BU-A6DRNJ2A cost to run per year?
The Gree GJC10BU-A6DRNJ2A costs about $95 a year to run, a fairly typical figure for the class; it ranks #194 of 404. It uses 35% less energy than the U.S. federal standard model in its class, which would cost about $146/yr to run, a saving of roughly $51 a year. Its size-adjusted efficiency percentile of 52 lands in the middle of the pack once capacity is accounted for. The CEER figure of 14.7 on this model captures combined energy efficiency ratio, the main efficiency lever ENERGY STAR tracks for this class.
Immediately around it on the leaderboard, the Zokop TIWC-10CRD1 at $93/yr runs a little cheaper and the House Kobo KOBOGJC10BU at $95/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A room air conditioner typically stays in service for somewhere around 10 years; over that span, the Gree GJC10BU-A6DRNJ2A's $95/yr adds up to roughly $950 in electricity alone, before purchase price or repairs.
Also sold as: House Kobo KOBOGJC10BU.
By the numbers
The Gree GJC10BU-A6DRNJ2A normalized against its whole class, so each figure means something.
What it costs you over time
Running cost is an every-year number, so it compounds. At $95/yr, here is what the Gree GJC10BU-A6DRNJ2A adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Gree GJC10BU-A6DRNJ2A costs about $950. That is roughly $510 less than a standard model in its class, which would run closer to $1460 over the same ten years.
How the Gree GJC10BU-A6DRNJ2A compares
The room air conditioner class we track runs from $51 to $389 a year. At $95/yr, it runs about $4 a year cheaper than the class median of $99, and it is about $44 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $146/yr, the Gree GJC10BU-A6DRNJ2A uses 35% less energy.
What drives its running cost
At 10000 BTU/hr, the Gree GJC10BU-A6DRNJ2A is a small room air conditioner for its class, which spans 5000 to 34100 BTU/hr with a median of 10100 BTU/hr, at the small end of the class, capacity itself is doing a lot of the work to keep that figure down, separate from how efficient the unit actually is. Its CEER of 14.7, below the class median of 15, reflects combined energy efficiency ratio: a higher figure means it wrings more useful work out of every kilowatt-hour, so it is the efficiency lever to weigh against raw size.
- Combined Energy Efficiency Ratio (CEER). Two units with the same BTU rating can post very different running costs, and CEER is the figure that explains most of that gap.
- BTU cooling capacity. BTU rating scales with room size, and it is usually the first driver of an air conditioner's running cost, ahead of its CEER figure.
- Thermostat and mode usage. How the unit is actually operated, thermostat cycling versus a fixed setting, moves real electricity use more than the rated BTU or CEER figure alone.
Common questions
Is the Gree GJC10BU-A6DRNJ2A cheap to run?
Roughly, yes. Its $95/yr figure is close to the class median, ranking #194 of 404, neither a bargain nor a splurge on running cost.
How much does the Gree GJC10BU-A6DRNJ2A cost per month?
About $7.89 a month, which is the $95 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 510 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $95 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Gree GJC10BU-A6DRNJ2A for its size?
52nd percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 193 | Zokop TIWC-10CRD110000 BTU/hr | $93 |
| 192 | Windmill 10W2Wi10000 BTU/hr | $93 |
| 191 | Whirlpool WHAW-101IN10000 BTU/hr | $93 |
| 190 | Vissani VAWA10V4HWT10000 BTU/hr | $93 |
| 189 | Tcl T10WQ2S10000 BTU/hr | $93 |
Source
ES_1105164_GJC10BU-A6DRNJ2A_12092024163219_80232913View certified room air conditioner listingsENERGY STAR data as of July 2026Gree and GJC10BU-A6DRNJ2A are used here for identification only and are not endorsements. Figures are computed by WattWise Labs from public ENERGY STAR data, not measured in our own lab.