Appliances / Window air conditioners / HOUSE KOBO
HOUSE KOBO KOBOGJC08BU
8,100 BTU · Window room air conditioner
Check the price at the store, then add $713 of electricity to get the true cost. We may earn a commission if you buy through these links.
- Price. Check what it costs at the store.
- Plus running cost. Add $713 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 KOBOGJC08BU
The HOUSE KOBO KOBOGJC08BU is a 8,100 BTU window room air conditioner certified by ENERGY STAR. Its official test figure is 392 kWh of electricity a year, which at the U.S. average price of 18.19¢ per kWh comes to $71 a year, or $713 over a typical 10-year life.
That is 42% less energy than the federal maximum for this type of air conditioner (676 kWh a year), a saving of about $52 a year compared with a model that only just meets the standard.
Among 492 window models it ranks #84 for running cost. The cheapest model of this type would save $240 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 ZAFRO 54091EWA0-8K-ZAZ uses 373 kWh a year and would save about $35 over 10 years.
Cost to run where you live
392 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 medium rooms (8,000 to 10,000 btu) model ranked.
| ZAFRO 54091EWA0-8K-ZAZ | 8100 BTU | $68/yr | saves $35 |
| BLACK+DECKER BDM08C | 8000 BTU | $68/yr | saves $31 |
| DuraSTAR DRWAC081XVB1 | 8000 BTU | $68/yr | saves $31 |
| Frigidaire FHWW085WF1 | 8000 BTU | $68/yr | saves $31 |
Specs
| Brand | HOUSE KOBO |
| Model | KOBOGJC08BU |
| Type | Window |
| Energy use | 392 kWh / year |
| Federal maximum for this type | 676 kWh / year |
| Size | 8,100 BTU |
| Width | 21 in |
| Efficiency (CEER) | 15.5 |
| 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 | 60.6 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 KOBOGJC08BU cost to run?
About $71 a year at the U.S. average electricity price (18.19¢/kWh), based on its ENERGY STAR rating of 392 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 KOBOGJC08BU cost in electricity over its life?
About $713 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 KOBOGJC08BU energy efficient?
Yes. It is ENERGY STAR certified and uses 42% 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 ZAFRO 54091EWA0-8K-ZAZ uses 373 kWh a year, about $35 less in electricity over 10 years.
Want the cheapest picks every week?
Join the free Leak Club. One short email with the lowest-cost picks we found.