Appliances / Window air conditioners / HOUSE KOBO
HOUSE KOBO KOBOGJC12BU
11,500 BTU · Window room air conditioner
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- Price. Check what it costs at the store.
- Plus running cost. Add $1,068 of electricity over 10 years. That is the part the price tag hides.
- Compare. Pick your state below, then check the cheaper-to-run models of the same size.
About the HOUSE KOBO KOBOGJC12BU
The HOUSE KOBO KOBOGJC12BU is a 11,500 BTU window room air conditioner certified by ENERGY STAR. Its official test figure is 587 kWh of electricity a year, which at the U.S. average price of 18.19¢ per kWh comes to $107 a year, or $1,068 over a typical 10-year life.
That is 35% less energy than the federal maximum for this type of air conditioner (903 kWh a year), a saving of about $57 a year compared with a model that only just meets the standard.
Among 492 window models it ranks #299 for running cost. The cheapest model of this type would save $595 in electricity over 10 years, though it may differ in size and features.
If you want the same type and a similar size for less to run, the BLACK+DECKER BDM10C uses 469 kWh a year and would save about $215 over 10 years.
Cost to run where you live
587 kWh a year (ENERGY STAR test figure) × 18.19¢ per kWh, the average residential price in the U.S. for Jan–Aug 2026 (EIA). Your bill depends on your utility and how you use it.
Cheaper to run, same type and size
Or see every large rooms (over 10,000 to 15,000 btu) model ranked.
| BLACK+DECKER BDM10C | 10000 BTU | $85/yr | saves $215 |
| DuraSTAR DRWAC101XVB1 | 10000 BTU | $85/yr | saves $215 |
| Frigidaire FHWW105WF1 | 10000 BTU | $85/yr | saves $215 |
| Frigidaire FHWW106WF1 | 10000 BTU | $85/yr | saves $215 |
Specs
| Brand | HOUSE KOBO |
| Model | KOBOGJC12BU |
| Type | Window |
| Energy use | 587 kWh / year |
| Federal maximum for this type | 903 kWh / year |
| Size | 11,500 BTU |
| Width | 21 in |
| Efficiency (CEER) | 14.7 |
| Mounting | Straddles Window |
| Voltage | 115 V |
| Inverter (variable speed) | Yes |
| Heat mode | No |
| Refrigerant | R-32 |
| Height | 13.0 in |
| Depth | 18.0 in |
| Weight | 65.0 lb |
Specs and energy use from the ENERGY STAR certified products list (U.S. EPA). An asterisk in a model number stands for colour or finish codes. HouseholdLeak is not affiliated with ENERGY STAR or the EPA.
Questions people ask
How much does the HOUSE KOBO KOBOGJC12BU cost to run?
About $107 a year at the U.S. average electricity price (18.19¢/kWh), based on its ENERGY STAR rating of 587 kWh a year. In a state with expensive power it can be much more; pick your state on this page to see your number.
How much will the HOUSE KOBO KOBOGJC12BU cost in electricity over its life?
About $1,068 over 10 years, a typical life for a room air conditioner. Add that to the price you pay to get the true cost to own.
Is the HOUSE KOBO KOBOGJC12BU energy efficient?
Yes. It is ENERGY STAR certified and uses 35% less energy than the federal maximum for its type.
Is there a cheaper air conditioner to run of the same type and size?
Yes. The BLACK+DECKER BDM10C uses 469 kWh a year, about $215 less in electricity over 10 years.
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