Appliances / Refrigerators / LG
LG LT18S1100 series
17.5 cu ft · Top Freezer refrigerator
Check the price at the store, then add $751 of electricity to get the true cost. We may earn a commission if you buy through these links; as an Amazon Associate we earn from qualifying purchases.
- Price. Check what it costs at the store.
- Plus running cost. Add $751 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 LG LT18S1100 series
The LG LT18S1100 series is a 17.5 cu ft top freezer refrigerator certified by ENERGY STAR. Its official test figure is 344 kWh of electricity a year, which at the U.S. average price of 18.19¢ per kWh comes to $63 a year, or $751 over a typical 12-year life.
That is 15% less energy than the federal maximum for this type of fridge (403 kWh a year), a saving of about $11 a year compared with a model that only just meets the standard.
Among 604 top freezer models it ranks #196 for running cost. The cheapest model of this type would save $439 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 $24 over 12 years.
Cost to run where you live
344 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 small (10 to 18 cu ft) model ranked.
| Samsung RT18DG6300 series | 17.5 cu ft | $61/yr | saves $24 |
| Hisense BCD-418WP4NA1/HC1(H) | 15 cu ft | $61/yr | saves $13 |
| Hisense RT15A2CCE | 15 cu ft | $61/yr | saves $13 |
| Samsung RT18DG6500 series (no ice maker) | 17.5 cu ft | $62/yr | saves $2 |
Specs
| Brand | LG |
| Model | LT18S1100* |
| Type | Top Freezer |
| Energy use | 344 kWh / year |
| Federal maximum for this type | 403 kWh / year |
| Size | 17.5 cu ft |
| Width | 27.5 in |
| Height | 65 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 LG LT18S1100 series cost to run?
About $63 a year at the U.S. average electricity price (18.19¢/kWh), based on its ENERGY STAR rating of 344 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 LG LT18S1100 series cost in electricity over its life?
About $751 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 LG LT18S1100 series energy efficient?
Yes. It is ENERGY STAR certified and uses 15% 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 $24 less in electricity over 12 years.
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