Appliances / Refrigerators / HOUSE KOBO
HOUSE KOBO WZTMF18 series (with ice maker)
18 cu ft · Top Freezer refrigerator
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- Price. Check what it costs at the store.
- Plus running cost. Add $974 of electricity over 12 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 WZTMF18 series (with ice maker)
The HOUSE KOBO WZTMF18 series (with ice maker) is a 18 cu ft top freezer refrigerator certified by ENERGY STAR. Its official test figure is 446 kWh of electricity a year, which at the U.S. average price of 18.19¢ per kWh comes to $81 a year, or $974 over a typical 12-year life.
That is 8% less energy than the federal maximum for this type of fridge (487 kWh a year), a saving of about $7 a year compared with a model that only just meets the standard.
Among 604 top freezer models it ranks #512 for running cost. The cheapest model of this type would save $661 in electricity over 12 years, though it may differ in size and features.
If you want the same type and a similar size for less to run, the Samsung RT18DG6300 series uses 333 kWh a year and would save about $247 over 12 years.
Listed features: ice maker.
Cost to run where you live
446 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 (18 to 23 cu ft) model ranked.
| Samsung RT18DG6300 series | 17.5 cu ft | $61/yr | saves $247 |
| Samsung RT18DG6500 series (no ice maker) | 17.5 cu ft | $62/yr | saves $225 |
| Samsung RT70F18LR series (no ice maker) | 17.5 cu ft | $62/yr | saves $225 |
| LG LT18S1100 series | 17.5 cu ft | $63/yr | saves $223 |
Specs
| Brand | HOUSE KOBO |
| Model | WZTMF18*** |
| Type | Top Freezer |
| Energy use | 446 kWh / year |
| Federal maximum for this type | 487 kWh / year |
| Size | 18 cu ft |
| Width | 33 in |
| Features | Ice maker |
| Height | 67 in |
| Defrost | Automatic |
| Built-in | No |
| Compact | No |
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 WZTMF18 series (with ice maker) cost to run?
About $81 a year at the U.S. average electricity price (18.19¢/kWh), based on its ENERGY STAR rating of 446 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 WZTMF18 series (with ice maker) cost in electricity over its life?
About $974 over 12 years, a typical life for a refrigerator. Add that to the price you pay to get the true cost to own.
Is the HOUSE KOBO WZTMF18 series (with ice maker) energy efficient?
Yes. It is ENERGY STAR certified and uses 8% less energy than the federal maximum for its type.
Is there a cheaper fridge to run of the same type and size?
Yes. The Samsung RT18DG6300 series uses 333 kWh a year, about $247 less in electricity over 12 years.
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