Description
What the WM4000HWA is and where it fits
LG’s WM4000HWA is a 4.5 cubic foot front load washer with a tempered glass door, sold as a smart machine with ThinQ connectivity. In a laundry room it occupies the mainstream position: large enough for a family’s towels and bedding, small enough to sit under a counter or stack with a matching dryer, and built on LG’s closet depth chassis, which the company describes as shallower than average specifically so it fits places a deeper machine will not. Before going further, one caution about this listing. The specification table records the access location as top load, the item weight as 20 pounds and the controls as a knob, none of which can describe a front load washer with a glass door and a touch panel. The attribute block appears to belong to a different product, and nothing in it should be used for a buying decision.
Living with it day to day
Capacity is the number that shapes daily life, and LG gives it two ways: 4.5 cubic feet of drum, and a stated ability to take loads up to 20 pounds. In household terms that is a full set of bedding for a queen bed, or a family’s worth of towels, in one cycle rather than two. TurboWash 360 is LG’s name for spraying from five jets at multiple angles, and the company’s cycle time claim comes with its conditions attached: a complete clean in under 30 minutes, based on independent testing in the normal cycle with the TurboWash option on a 10 pound load, dated June 2020. That is a properly footnoted claim about a half sized load on one cycle, and it is not a promise that every wash takes half an hour.
Two other cycles are worth knowing about. ColdWash is described by LG as penetrating fabrics for cold water savings with warm water performance, which is the standard modern approach to reducing the largest energy cost in laundry, since heating water is where the electricity goes. The Allergiene cycle carries an Asthma and Allergy Foundation of America certification, and LG’s claim is that AAFA certified washers with that cycle remove over 95 percent of pet dander and dust. That is a third party certified claim rather than a marketing line, which is unusual and worth noting. LG publishes no decibel rating in this listing, and no laundry appliance in this catalog does, including the GE GFW550SSNWW. Buyers who want the same capacity without the connected features should compare the LG WM3400CW.
Controls and connected features
ThinQ is the connected layer, and LG describes ThinQ Care as proactive alerts covering usage, maintenance and early diagnosis delivered to a phone. On a washing machine that is more useful than on a refrigerator, because a washer has consumable behavior worth tracking: drum cleaning intervals, filter checks and error codes that a technician would otherwise have to attend to read. The AI Fabric Sensor and Smart Pairing are also named, with Smart Pairing being the feature that lets the washer tell a compatible LG dryer which drying cycle to select, which removes a small daily decision.
The important qualification is what happens without any of it. Every wash cycle, temperature, spin speed and option on this machine is selected on the control panel and runs to completion with no network involved. Losing the app costs notifications, remote start and the automatic dryer pairing, not the ability to wash clothes. Given that a washing machine is expected to last a decade or more and app platforms rarely do, that distinction is worth being clear about before paying a premium for connectivity. Smart Pairing in particular only works with a compatible LG dryer, so it is a feature that depends on buying two machines rather than one.
Running cost and upkeep
The listing does not publish an electrical specification for this washer. No voltage, no amperage and no circuit requirement appear, and none should be guessed, because laundry appliances vary: a washer alone is normally a plug in load while a washer dryer combination or an electric dryer is not, and the installation manual is the authority. Similarly, no water supply pressure range, hose specification or drain height is published, and all three are real installation requirements for a front load washer. The one thing that is clear is that this is a washer only, with no drying function, so it needs a separate dryer and either a vent or a heat pump machine alongside it.
Running cost is dominated by water heating rather than by the motor, which is what makes the ColdWash option the meaningful economy feature rather than the spin speed. LG publishes no annual energy or water consumption figure in this listing, so nothing can be calculated here. Upkeep on any front load washer is the same short list and it is not optional: run the tub clean cycle on schedule, leave the door ajar between washes so the gasket dries, and wipe the door seal, because a front load gasket that stays wet grows mould and that is the single most common complaint about this entire class of machine. The detergent drawer needs rinsing periodically as well. LG also markets the SideKick pedestal washer as an add on for small loads, and states plainly that it is sold separately. Buyers comparing across the range will find the rest in the washers section, including the larger LG WM4200HWA and the LG WM4500HBA.
Highlights
- 4.5 cubic feet of drum, with LG stating loads of up to 20 pounds.
- TurboWash 360 with five spray jets, and a cycle time claim that names its test conditions.
- Allergiene cycle carries AAFA certification with a stated 95 percent dander and dust reduction.
- ColdWash targets the largest energy cost in laundry, which is heating water.
- ThinQ Care delivers maintenance and diagnostic alerts to a phone.
- Closet depth chassis fits shallower spaces than a standard front loader.
Things To Consider
- The specification table describes a top loading knob controlled machine weighing 20 pounds, which cannot be this product.
- No electrical specification is published, and laundry appliances differ too much to assume one.
- No water pressure, hose or drain height requirement is stated.
- No annual energy or water consumption figure is published.
- Smart Pairing requires a compatible LG dryer, and the SideKick pedestal washer is sold separately.
- Front load gaskets need wiping and airing, or they grow mould.
Who it is not for
Anyone unwilling to leave a washer door open between loads and wipe a rubber gasket should not buy any front load machine, and this is no exception. Households that want a washer and dryer in one appliance need a combination unit rather than a washer, since this has no drying function at all. Buyers who will never open an app are paying for connectivity they will not use and should look at LG’s non connected models at the same capacity. And anyone specifying an installation from published data should be especially careful here, because the attribute block for this listing describes a completely different machine and the electrical and plumbing requirements are absent entirely.
