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LG SIGNATURE WM9998HA

Ranked #2 of 40 in Best Clothes Washers (2026). Here is every spec we scored, where it came from, and how it compares.

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LS

#2

LG SIGNATURE WM9998HA

Best for: Official IMEF 3.2, 5.8 cu ft volume, 108 kWh/year, official IWF 2.6

9.4/10

What we like

Highest official IMEF in this comparison (3.2)
Largest official certified volume in this comparison (5.8 cu ft)
Lowest official Integrated Water Factor in this comparison (2.6)
Official record meets ENERGY STAR Most Efficient criteria

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Integrated Modified Energy Factor (IMEF) 28%

Certified volume 24%

Annual energy use 24%

Integrated Water Factor (IWF) 24%

Integrated Modified Energy Factor (IMEF)	3.2
Certified volume	5.8 cu ft
Annual energy use	108 kWh/year
Integrated Water Factor (IWF)	2.6
Integrated Modified Energy Factor, IMEF (ENERGY STAR)	3.2
Certified volume (ENERGY STAR)	5.8 cu ft
Annual energy use (ENERGY STAR)	108 kWh/year
Integrated Water Factor, IWF (ENERGY STAR)	2.6
Annual water use (ENERGY STAR)	4426 gal/year
IMEF percent above the U.S. federal standard (computed)	74%, computed as (official IMEF - official U.S. federal standard IMEF) / official U.S. federal standard IMEF
Annual energy use per cubic foot (computed)	18.6 kWh/year per cubic foot, computed as official annual energy use ÷ official cubic foot
U.S. federal standard IMEF (ENERGY STAR)	1.84
U.S. federal standard IWF (ENERGY STAR)	4.7
Load configuration (ENERGY STAR)	Front Load
Dimensions (ENERGY STAR)	29.0 in W
Additional washer features (ENERGY STAR)	Not listed
Connected (ENERGY STAR)	No
Paired ENERGY STAR dryer available (ENERGY STAR)	No
Meets ENERGY STAR Most Efficient criteria	Yes
Certified model number	WM9998H*A
Official brand name on the ENERGY STAR record	LG SIGNATURE
Price	Check price

Check price at Amazon

Specs sources:

LG SIGNATURE WM9998HA head-to-head

Head-to-headLG SIGNATURE WM9700HA vs LG SIGNATURE WM9998HA Head-to-headLG SIGNATURE WM9998HA vs Electrolux ELFW7738 Featured inBest High-Efficiency Clothes Washers (2026)Featured inBest Large-Capacity Clothes Washers (2026)

How it compares

Open the full comparison table

LG SIGNATURE WM9700HA

#1 · Official IMEF 3.2, 5.8 cu ft volume, 108 kWh/year, official IWF 2.6

Electrolux ELFW7738

#3 · Official IMEF 3.2, 4.5 cu ft volume, 74 kWh/year, official IWF 2.6

Samsung WF50BG83A

#4 · Official IMEF 3.1, 5 cu ft volume, 99 kWh/year, official IWF 2.9

#5 · Official IMEF 3.1, 4.5 cu ft volume, 80 kWh/year, official IWF 2.9

Samsung WF45B63A

#6 · Official IMEF 3.1, 4.5 cu ft volume, 93 kWh/year, official IWF 2.9

Samsung WF46BG65A

#7 · Official IMEF 3.1, 4.6 cu ft volume, 95 kWh/year, official IWF 2.9

GE Profile PFW955SW

#8 · Official IMEF 2.92, 5.5 cu ft volume, 136 kWh/year, official IWF 3

GE Profile PFW870SV

#9 · Official IMEF 2.92, 5.3 cu ft volume, 136 kWh/year, official IWF 3

LG WKHC202HA

#10 · Official IMEF 2.92, 4.5 cu ft volume, 105 kWh/year, official IWF 2.9

#11 · Official IMEF 2.92, 4.5 cu ft volume, 105 kWh/year, official IWF 2.9

LG WM5700HA

#12 · Official IMEF 2.92, 4.5 cu ft volume, 105 kWh/year, official IWF 3

Maytag MHW6630M

#13 · Official IMEF 2.92, 4.8 cu ft volume, 99 kWh/year, official IWF 3.2

Maytag MHW5630M

#14 · Official IMEF 2.92, 4.5 cu ft volume, 86 kWh/year, official IWF 3.2

Electrolux ELTE7300

#15 · Official IMEF 2.76, 4.4 cu ft volume, 50 kWh/year, official IWF 3.2

Midea MLFW53S4BBC

#16 · Official IMEF 2.76, 5.3 cu ft volume, 117 kWh/year, official IWF 3.2

GE Profile PFW950ST

#17 · Official IMEF 2.76, 5.3 cu ft volume, 158 kWh/year, official IWF 3

GE Profile PFQ97HSV

#18 · Official IMEF 2.76, 4.8 cu ft volume, 136 kWh/year, official IWF 3

GE GFW655SV

#19 · Official IMEF 2.76, 5 cu ft volume, 158 kWh/year, official IWF 3

Whirlpool WFW6720R

#20 · Official IMEF 2.76, 5 cu ft volume, 140 kWh/year, official IWF 3.2

GE GFW350SY

#21 · Official IMEF 2.76, 4.6 cu ft volume, 150 kWh/year, official IWF 3

GE GFW510SV

#22 · Official IMEF 2.76, 4.6 cu ft volume, 150 kWh/year, official IWF 3

Whirlpool WFW4720R

#23 · Official IMEF 2.76, 4.5 cu ft volume, 140 kWh/year, official IWF 3.2

Bosch WGB246AXUC

#24 · Official IMEF 2.62, 2.4 cu ft volume, 100 kWh/year, official IWF 3.5

Whirlpool WEF5727T

#25 · Official IMEF Not listed, 4.5 cu ft volume, 140 kWh/year, official IWF 3.2

Bosch WGA12400

#26 · Official IMEF 2.4, 2.1 cu ft volume, 70 kWh/year, official IWF 3.7

Beko BWM242300SWW

#27 · Official IMEF 2.3, 2.3 cu ft volume, 73 kWh/year, official IWF 3.7

Samsung WW25B68A

#28 · Official IMEF 2.25, 2.5 cu ft volume, 90 kWh/year, official IWF 3.7

Samsung WW25FG5B

#29 · Official IMEF 2.25, 2.5 cu ft volume, 90 kWh/year, official IWF 3.7

Bosch WAW285H1UC

#30 · Official IMEF 2.2, 2.2 cu ft volume, 84 kWh/year, official IWF 3.7

GE GTW490ACJ2WS

#31 · Official IMEF 2.07, 4.4 cu ft volume, 133 kWh/year, official IWF 4.1

GE GTW490ACJ7WS

#32 · Official IMEF 2.07, 4.4 cu ft volume, 133 kWh/year, official IWF 4.1

LG WKHC152HA

#33 · Official IMEF 2.2, 2.4 cu ft volume, 90 kWh/year, official IWF 3.7

GE Profile PTW600BR

#34 · Official IMEF 2.06, 5 cu ft volume, 158 kWh/year, official IWF 4.3

Speed Queen LWN6ZR119T

#35 · Official IMEF 2.06, 3.2 cu ft volume, 60 kWh/year, official IWF 4.3

Electrolux ELVW7600AB

#36 · Official IMEF 2.06, 5.4 cu ft volume, 198 kWh/year, official IWF 4.3

Electrolux ELVW7605AB

#37 · Official IMEF 2.06, 5.3 cu ft volume, 198 kWh/year, official IWF 4.3

Electrolux ELVW7405AW

#38 · Official IMEF 2.06, 5 cu ft volume, 189 kWh/year, official IWF 4.3

Whirlpool WTW6150P

#39 · Official IMEF 2.06, 5.3 cu ft volume, 260 kWh/year, official IWF 4.3

Whirlpool WTW6157P

#40 · Official IMEF 2.06, 5.3 cu ft volume, 260 kWh/year, official IWF 4.3