LG Signature LUWD1C
Filed with DOE as LUWD1C*. An asterisk in a model number stands for any character: this one filing covers several variants.
180 kWh a year DOE CCD (opens in a new tab) (the U.S. Department of Energy’s Compliance Certification Database) · 2026-10-25with an electric water heater and an electric dryer
IMEF 1.15 filed efficiency; the yearly figure is computed from it
A compact top-loading washer (under 1.6 cubic feet). Drum: 0.7 cubic feet.
Label numbers this filing covers (1)
The model number on your rating plate may be any of these; each is filed under this one listing.
- LUWD1C*
Checking the LG SIGNATURE LUWD1C*? With an electric water heater and an electric dryer it uses 180 kWh a year, plus 2,478 gallons of water, at DOE's test use. Its IMEF, the cubic feet of laundry washed per kilowatt-hour, dryer included, is 1.15, below the class median of 1.25.
Energy and water per year
180 kWh a year with an electric water heater and an electric dryer
Computed by this site from the registry's IMEF and drum capacity at DOE's test use of 295 cycles a year. IMEF counts the washer, heating its water electrically, and the electric dryer's work on what the spin leaves wet — so this is the total for that kind of home. How it is calculated
Not published: The washer's own share, without the dryer
DOE's database files IMEF, which folds the dryer in; only ENERGY STAR splits the machine out, and it lists this model under no matching rating.
The total above, and the IMEF it comes from, stand as filed.
Not published: A home with a gas water heater, a gas dryer or line drying
DOE's rating assumes electric water heating and an electric dryer and files no split between the machine, the water heating and the drying.
Such a home uses less electricity than the total above; how much less, no registry says for this model.
2,478 gallons of water a year
Computed from the registry's IWF and drum capacity at the same 295 cycles a year.
Not published: What the water costs
water and sewer rates are set by thousands of local utilities and no free national source publishes them.
The gallons above are the figure to multiply by your own water and sewer rate.
This model is rated exactly at the federal minimum IMEF for its class, like many others; no rank is claimed inside that tie.
What you can do. Federal minimum means this model uses as much energy as the law allows for its class. 36 washers in the same class file a higher IMEF; at the same drum size and use, a higher IMEF is less energy a year. See the most efficient washers in each class
DOE CCD (opens in a new tab) · 2026-10-25What it costs to run where you live
See what the middle washer of each product class costs to run on your rate.
What the registry files
From DOE CCD · 2026-10-25
- IMEF (Integrated Modified Energy Factor) how many cubic feet of drum a washer cleans for each kilowatt-hour, counting the machine, heating the water and drying what the spin leaves wet
- 1.15 Compared only with other top-loading, compact washers.
- IWF (Integrated Water Factor) how many gallons of water a washer uses per cycle for each cubic foot of drum
- 12
- Clothes container capacity the volume of the drum in cubic feet, as DOE's test measures it
- 0.7 ft³
- Federal minimum IMEF for this class
- 1.15
Installed cost and service life
Not published: Installed cost range
NLR REMDB's cost model needs the washer's own yearly energy use, which only ENERGY STAR files — and it lists no matching rating for this model.
Ask retailers or installers for a written quote that names this model number. The yearly energy, water and running cost on this page do not depend on it.
Service life: DOE’s cost database assumes 11 years for top-loading washers. That is a class assumption, not this model’s rating or a warranty — no registry publishes either.
NLR REMDB v4.0.0 · 2026-09-29Safety record
No CPSC recall names this model.
Checked against the CPSC recall database. CPSC does not publish a model-level match for this product category, so this list is curated by hand from the manufacturer's recall filings.
CPSC · 2026-09-29What these figures mean
Where the hot water in this figure comes from
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Water heaters
The other big user of hot water in a home, with every model on file.
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What a water heater costs to run
Prices a water heater’s efficiency against your own utility’s tariff.
Closest in its class
- Comfee MAR30-P0501P/01-US 231 kWh a year
- Commercial Care MAR30-0301P/01M-US 231 kWh a year
- LG Signature WD100C 257 kWh a year
- LG WD100C 257 kWh a year
Keep going
How every figure on this page is calculated
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Top-load washers ranked by filed efficiency (IMEF)
Ranked by filed IMEF inside each class, recalled models left out.
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Compact washers ranked by filed efficiency (IMEF)
Ranked by filed IMEF inside each class, recalled models left out.
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Most energy-efficient clothes washers
Ranked by filed IMEF inside each class, recalled models left out.
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How much water and electricity does a washing machine use?
The yearly gallons and kWh of every residential washer on file, by product class with the full spread, plus the exact per-cycle figures, and the watts no registry files declared as a gap.
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Every clothes washer on file
All four product classes, from the DOE registry.
The yearly figure of 180 kWh was computed by this site, not by the registry. It applies DOE's test use to the registry's IMEF of 1.15 and to the capacity, the drum's volume in cubic feet, listed as 0.7. Because IMEF folds the dryer in, the figure holds only with an electric water heater and an electric dryer, and it is not the washer's own share. DOE's database does not split that share out. Only ENERGY STAR does, and it lists this model under no matching rating, so a machine-only figure is not available. The source is DOE CCD, retrieved 2026-10-25. The method behind the yearly figures is documented separately.
Read the rest
IWF, the gallons of water used per cycle for each cubic foot of drum, is 12 for this model. Combined with the capacity of 0.7 cubic feet and DOE's test use, this site computes 2,478 gallons a year. A household that runs more or fewer loads than DOE's test use will see a different total. The cost of that water is not stated, because no free national source publishes local water and sewer rates, and this page does not estimate it. The installed price range is also not published. The cost database needs the washer's own yearly energy, which only ENERGY STAR files, and it has no matching rating for this model.
This model is compared with the 48 models registered as top-loading, compact. The class median IMEF is 1.25, and this model's IMEF of 1.15 is lower. A lower IMEF means less laundry washed per kilowatt-hour, dryer included. The gap is not restated here as a separate figure. The running cost of the 180 kWh a year depends on your own utility electricity tariff, so the page computes it from your ZIP and does not state it in the text. Other models in the same registry are listed under all clothes washer pages.