Model
House Kobo KOBOGJC10BU
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 House Kobo KOBOGJC10BU cost to run per year?
At $95 a year to run, the House Kobo KOBOGJC10BU sits close to the middle of its class on cost, ranking #194 of 404 room air conditioner models we track. 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 52th size-adjusted efficiency percentile is unremarkable, close to what a typical model in the class scores. Its CEER of 14.7 reflects combined energy efficiency ratio, one of the class's core efficiency levers.
Immediately around it on the leaderboard, the Gree GJC10BU-A6DRNJ2A at $95/yr runs a little cheaper and the Ge Profile PHNT10CCH1 at $98/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 House Kobo KOBOGJC10BU's $95/yr adds up to roughly $950 in electricity alone, before purchase price or repairs.
Also sold as: Gree GJC10BU-A6DRNJ2A.
By the numbers
The House Kobo KOBOGJC10BU 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 House Kobo KOBOGJC10BU adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the House Kobo KOBOGJC10BU 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 House Kobo KOBOGJC10BU 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 House Kobo KOBOGJC10BU uses 35% less energy.
What drives its running cost
At 10000 BTU/hr, the House Kobo KOBOGJC10BU is a small room air conditioner for its class, which spans 5000 to 34100 BTU/hr with a median of 10100 BTU/hr, less capacity to service is usually the first reason a running-cost figure lands on the low side, before efficiency even enters the picture. Beyond size, its CEER of 14.7, below the class median of 15, is the class's own efficiency yardstick, combined energy efficiency ratio, and it is what separates two similarly sized models with different running costs.
- Combined Energy Efficiency Ratio (CEER). CEER captures cooling output per watt, including standby power; a higher CEER means less electricity for the same BTU of cooling.
- BTU cooling capacity. A higher-BTU unit is sized for a bigger room and generally uses more electricity per hour of operation than a smaller unit, regardless of efficiency.
- Thermostat and mode usage. Running on a fixed low temperature around the clock uses far more energy than using a thermostat setting, eco mode, or a timer to match cooling to when the room is actually occupied.
Common questions
Is the House Kobo KOBOGJC10BU cheap to run?
It is about average. At $95 a year it ranks #194 of 404 room air conditioner models we track, close to the middle of its class on running cost.
How much does the House Kobo KOBOGJC10BU cost per month?
Roughly $7.89/mo, spreading the $95/yr estimate evenly across twelve months at $0.1856/kWh. Actual monthly bills swing with your rate and usage pattern.
How is this running-cost figure calculated?
We take the model's published annual energy use of 510 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $95 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the House Kobo KOBOGJC10BU 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 |
|---|---|---|
| 194 | Gree GJC10BU-A6DRNJ2A10000 BTU/hr | $95 |
| 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 |
Source
ES_1150317_KOBOGJC10BU_08202025122250_80262526View certified room air conditioner listingsENERGY STAR data as of July 2026House Kobo and KOBOGJC10BU 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.