LG WM3420C*
Front Load · 4.50
ENERGY STAR Most Efficient
Summary
The LG WM3420C* is a front load with 4.50 capacity that uses 80 kWh per year, costing approximately $12.8annually to run at the US average electricity rate. Over 10 years, that's $128 in energy costs alone., earning ENERGY STAR's "Most Efficient" designation — the top tier of certified products. It meets ENERGY STAR certification but isn't among the top performers.
$12.8
per year to run
50
efficiency score /100
$128
10-year energy cost
How This Compares to Other Clothes Washers
Ranked #33 out of 376 in the clothes washers category (by lowest annual cost).
Annual Cost
$12.8 vs avg $24
$11.2/yr cheaper
Energy Use
80 kWh vs avg 149
69 kWh less
Efficiency Score
50 vs avg 50
Below average
Energy Details
Annual Energy Use80 kWh/year
Federal Standard2 kWh/year
Better Than Standard0%
Annual Cost (at $0.16/kWh)$12.8
Capacity4.50
Width27"
BrandLG
Date Certified2026-01-12
Energy cost estimated at $0.16/kWh (US national average). Your actual cost depends on your local electricity rate and usage patterns. Data from ENERGY STAR certified product database.