by Jaro

RANK #2:


The LG WM3997HWA provides an ideal solution when it comes to installing conventional laundry. You can install it anywhere power and water can be found. Whether you’re short in space or you simply need a combo unit that provides time-saving features, this is a machine you need to consider. LG is a leading manufacturer in the area of laundry appliances. You will enjoy the longevity and reliability of their products. Its exceptional capacity makes the drying process more effective as the clothes will have more space to tumble around. Trust me, it makes a real difference – that’s why with combos, it is always recommended to only half fill the drum for best drying results.

It’s the new version of my previous 2nd best ranked combo LG WM3987HW. This new model has been around a few years already and proved to be equally or maybe even more reliable combo, based on user feedback.


Dimensions (WxHxD): 27″ x 38 11/16″ x 29 3/4″
Weight: Product: 211 lb.; Shipping 225.8 lb.
Capacity (cu.ft.): DOE 4.3 cu. ft. (Wash: 25 lb, Dry: 15 lb)
Drying System: Ventless Condensing
Number of Wash Programs: 14
Number of Dry Programs: 5
  • TrueBalance™ Anti Vibration System – designed to minimize vibration and noise for quiet and smooth performance.
  • Direct Drive Motor – uses fewer moving parts, meaning the operation is more efficient.
  • Ultra Large capacity of 4.3 cu. ft. – fewer loads and more laundry; the perfect combination.
  • Ventless Condensing – you don’t need external venting to dry your clothes.
  • Sanitary Cycle – can remove even the nastiest stains and bacteria.
  • Automatic Wrinkle Care and Steam Technology – delivers fresh-looking and neat results. The steam goes deep into the fabrics and eliminates any dirt, odors or wrinkles.
  • End-of-cycle Signal – you’ll be notified when a cycle is complete.
  • Child Lock – prevents unsupervised operation.
  • Delay Wash – you can preset the unit to operate while you’re busy doing something else.
  • 14 Wash Cycles and 5 Dryer Cycles – you can take a good care for different garments.
  • Front-panel Dial-a-Cycle Digital Controls – the operation is simplified.
  • LoDecibel quiet operation – no more loud noises; you won’t disturb your family members while doing the laundry. Automatic evening out of the load via a proper relaxing of the drum when an uneven bulk of clothes is detected in the drum.
  • Modern and luxury features – playing some cute songs, beautiful user interface and drum light which you can turn on and off anytime.
  • No Water Reservoir – the water drains out automatically through the same hose that is used to drain water during the wash cycle.
  • Lint/coin filter – the small panel door on front lower left when looking at the picture.
Spin Speed (Max): 1300 RPM
Warranty: 1 Year Warranty on Parts & Labor; 10 Years Warranty on Motor; Lifetime Warranty on Drum.
Wash Programs: Cotton/Normal, Perm. Press, Bulky/Large, Hand Wash/Wool, Delicates, Speed Wash, Sanitary, Tub Clean, Heavy Duty, Allergiene™, Bright Whites™, Drain+Spin, Towels, Small Load.
Dry Programs: Sensor Dry: Low Temp Dry, Damp Dry, Normal Dry, More Dry; Manual Times Dry: 30 mins, 60 mins, 90 mins, 120 mins.
Wash/Rinse Temps: Tap Cold, Cold, Warm, Hot, Extra Hot.
Options: Prewash, Delay Wash (up to 19 hours), Rinse+Spin, Child Lock, Extra Rinse, Steam, Drum Light, Custom Program, TurboWash™, FreshCare™, ColdWash™, Tub clean, Cycle-Finished Signalling ON/OFF…
Tray Dispenser: Prewash, Main Wash, Bleach, Softener.
Materials: NeveRust™ Stainless Steel Drum, Painted Steel Cabinet, Plastic Control Panel, Painted Metal Top Plate, Transparent Door Glass, Chrome Door Rim.
Color: White
Ratings Electrical Requirements: UL Listed (120V, 12 Amps, Electric) – uses the standard 115-120 volt, 15-20 amp wiring.
Unfortunately, I couldn’t find a video review for this model of the washer dryer combo.
Pros and Cons:
  • Great and fast drying results thanks to its huge capacity.
  • Easy to install and easy to use.
  • Very quiet, you can barely feel a vibration if put on a solid floor.
  • Quick operation, it takes up to 1-2 hours (depending on the material of clothes) to wash and dry if half-loaded.
  • It weighs your loads and automatically adjusts the time to wash and dry based on that.
  • Most clothes need just a minimum amount of detergent to come out clean and soft on touch.
  • It’s ventless and uses condensation to make the vapor release its moisture and be pumped out along with cold water used for this purpose.
  • It saves up to %70 of water when compared to some older machines.
  • Being practically almost an Energy Star rated product, it will save you money also for the electricity.
  • You can interrupt the running program at any time, change any setting or open the door, and then resume.
  • Plays a nice little melody tune after the cycle has finished instead of the typical annoying beeping or loud buzzes. The melody can be turned off to have no signalling at the end.
  • The price is a little bit higher than for other combos
Negatives common to all combos:
  • There is no exterior lint trap for the dryer. The lint tends to collect around the rubber seal and you have to empty that once a month depending on the frequency of use.
  • The clothes need to be free to tumble in order to dry completely. Fill only half of the drum if you’re going to use the dry function.
  • Noisy water pump that expels the water from the machine – although active only intermittently during the wash and rinse cycle.
  • Produces a bit of heat.
Design: 9/10 Capacity: 10/10
Features: 10/10 Wash & Dry Programs: 10/10
Money Savings: 10/10 Quiet: 8/10
Quality of Wash: 10/10 Quality of Dry: 10/10
Affordable: 5/10 Reliability: 9/10
Total Score: 91
Reviews and Prices:
Here you can find and compare user comments and prices from different online stores. Just a small advice – if you find a lot of positive reviews and some negative ones, it usually means that the complaining people don’t use the machine properly, or received some defective piece.
Online Store Price Link
Compact Appliance $2,712.86:  $1,705.10 Purchase
Amazon $1,750.99 Purchase
Appliances Connection $1,895 Purchase

With automatic wrinkle care and steam technology, the LG WM3997HWA combo unit helps ensure that your clothes will be fresh after every washing and drying process. The stainless steel drum and the materials of this combo offers high durability.

Despite of the price being a little bit higher, it’s been one of the best selling combos for a few years now.  In my rating, it’s popularity and all the features I’ve mentioned make it the 2nd best option when deciding to buy a combo. It’s not first only because of the higher price.


Hi, my name is Jaro and I'm the founder of this website. If you wanna read more about me, please check out my ABOUT page.

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  • Isaac

    Hi Jaro, quick question: I have two small dogs who of course shed a bit of hair. I’m curious as to the effectiveness of this combo washer dryer unit in removing pet hair from clothing, given the stated fact that there is not lint filter as such. Might this LG unit not be what I’m looking for in terms of hair removal from blankets, shirts, socks, etc.? Thanks!

  • Hi Isaac, it’s just a detail that doesn’t cause issues even though you have dogs, etc. Don’t worry it’s just how the combos are designed – they all have it in common.

  • InPlushWeThrust

    It would be nice is someone made a vented version of this. Living in a 700 sqft condo, a stacked unit takes up too much space.. but at least I do have a vent.

    • “InPlushWeThrust”, but this is not a stacked unit, it’s a combo, which means that the washer and dryer are in the same unit. It takes up the same amount of space as any other washer.

      • InPlushWeThrust

        I understand that. I’m just saying I wish it was equipped for venting outdoors instead of into the room it’s in. I’d rather have one unit the size of a washer, than my current tall stacked unit. At least I could put shelving where the upper dryer would normally go.

      • InPlushWeThrust

        That and vented means it would dry quicker.

  • abc123

    Hello. I’ve been interested in getting on of these all-in-ones and I found that many people have reported that these units raise the heat and humidity levels in the room they operate and leak as the extracted water gathers at the bottom of the unit. These reports were from a couple of years ago. Is this still true?

    • Hi there, the combo units do raise a little bit the heat and humidity levels in the room but it’s not such a big deal, especially with the higher quality units. The leakage you mention is not a common thing, unless it’s a broken or some cheaper machine, etc.

  • dennisb

    Do you know if the door on this unit is reversible?

    • Hi Dennis,
      no, unfortunately the door is not reversible and it’s a left side hinge as it’s typical for I’d say practically all washers and w/d combos.

  • Colin Bailey

    What power hook up is required for this unit? Is it a standard 220v dryer plug? Or does it is a standard 110v wall outlet. The description just says,” you can install it anywhere power and water can be found.” the reason I ask is because I currently have a gas unit and do not have 220v in the current laundry room.

    • Hi Colin, as you can see in the listed details above it runs on a standard 115-120 volt, 15-20 amp wiring. All that is needed to install the combo is a 115V plug and access to a faucet or sink to use as the water source and drain.

  • Heather Hampton

    Hi, I just got this machine and clothes are coming out wet?? Does the drain pipe for the water going out have to be low? My washer/dryer hookup is a couple inches higher on the wall than the unit. Or could it be something else? Thanks!

    • Hi Heather, the drain pipe shouldn’t be higher than 96″ (240 cm) above the bottom of the washer (for a picture check out my FAQ section Q#6: http://www.washerdryercomboz.com/faq/#6). Try to fill only half of the drum, so that the clothes have more space to tumble and dry. Also try add a setting for an extra drying time if still not satisfied with the result.

  • Joshua Adom

    Hello Jaro, I am in Ghana and want to order this machine to be used in Ghana. the standard voltage in Ghana is 220V and 50 MHz. Can I get this on the market for this Combo washing machine?

    • Hi Joshua, I’m sorry I tried to search and find out if it is possible to find this one in Ghana but it looks like the LG combos are not easy to get there..

  • Matt Klarich

    Had this unit for a year and the lint never collects in the lint trap. I have drained the trap down monthly and removed the lint trap but there is never anything in there. All of the lint collects around and behind the rubber around the drum. I have to peel the seal back and pull the lint out from between the rubber and the drum. Is that normal?

    • Hi Matt, sorry I must have missed your comment. The lint trap is more less a coin trap, it’s not a typical lint trap. This machine uses a modern way of removing the lint and it basically just goes out in the drain. It cannot be 100% efficient, that’s why it’s suggested to be careful with the amount of detergent you use and also you should run the clean cycles a couple times a year. Hope that helps.

  • oninoshiko

    I actually have this unit, and have never gotten it to dry. I have to leave my clothes hanging in excess of a day to get them dry. I got this combo to make doing laundry easier, it’s made it harder.

    • Hi oninoshiko, this behavior certainly isn’t normal. You probably just need to play with the settings, use extended dry time and/or put less clothes in the drum. Working with combos, you cannot fill them the same way as in the normal washers, they really need a space to tumble around. Then when you take them out, although the might seem a little dump sometimes, it’s gonna dry completely within seconds once you take it out from the drum.

      • oninoshiko

        That’s a half load, on the longest time setting.

        • Oninoshiko, I’m sorry but this is really not a typical behaviour for this machine. I’d suggest you call a technician to have a look at it..

          • oninoshiko

            Been there done that. I’ve had people out about 5 times, every one sent tells me that they cannot find a problem. The experence has been awful, all you have to do is look at the posts on LG’s site for the numerous complaints about the problem.

          • Ralph1001

            I believe the manual states 7 pounds of clothes during the dry cycle for proper operation. I’ve never had a problem with small loads, 5 – 10 pounds.

          • Yeah me neither..

        • jason

          the reason they wont dry is because the drain is to high if u lower the drain even the largest load will b 100% dry in one hour or after wash cycle put hose in bucket on floor thats a good way to test it i hope this helps as im positive it will solve your issue:) jasonlarose1977@gmail.com feel free to email me if you have aany questions

  • Andy Chromatic

    Just got this machine and while I believe I will love it in due time there are a couple of problems:

    1. The SMELL. From drying. It is bad. It smells like sulfur and has actually made a load of clothes smell this way. Anyone have any similar issues? I have read in numerous places that this happens for the fist ten loads or so. I will run towels through it and see how it goes, and then run “low temp” drying on the fist load of clothes that go through. In any case this is a major oversight and I am a bit dismayed that a $1800 has possibly ruined some clothes. Maybe you are supposed to run a bunch of loads before putting good clothes into ANY machine and I am just a noob? haha, if that’s the case that should be in the manual.

    2. A LOT of Steam coming out of the small vent by the water hoses at the rear of the machine while drying. There is a check valve that is supposed to let air into the drum but not back out, i.e. when there is air pressure inside when the unit is drying. This is significant, it puts a lot of condensation on my wall and a small amount makes it to the floor. I took a look at this valve and it seemed sticky. I will have LG work on this since the machine is under warranty.

    I am guessing that this happens to a lot more machines than people are realizing. My guess is that reports of this thing making a room hot a humid are due to this. This vent is right by the hoses – just put your hand back there while drying is happening and you will feel it.

    I will say as regards to drying, I have ZERO issues with that (other than the vent.) This thing nearly shrunk a load on me everything was so hot and dry. I do have it set on a pedestal and I cut my standpipe down to about a foot or so off the floor. The reports of needing “gravity assist” or whatever are incorrect I believe – this machine has a pump to expel water so it doesn’t need gravity – but I do think it likely that the outlet to the standpipe should be lower than the outlet of the machine. Otherwise that hose will always be full of water. Think of that hose as acting like a p-trap.

    Anyway, it does seem to be a miraculous machine albeit with some issues. If someone can reassure me the smell would go away that would be appreciated! I am confident the check valve can be dealt with.

    • Thank you very much again for your information Andy. I’ve just replied to your message in the FAQ section too. As also Jason commented already somewhere on this page, the drain has to be lower and this way there will be no issues with drying.

      Regarding the smell, I’d suggest you to run a few cycles with about 2 spoons of baking powder – it’s the BEST thing to get rid of any smell EVER – but it has even more usages than just that – antibacterial, cleans everything, etc.! Then run a few cycles also with a 1:1 cup of water and vinegar – this will make sure to kill any bacteria and yeasts that might be there – it’s actually good to do it once a month.

      • Andy Chromatic

        Hi Jaro, thanks for the tip! I will use the baking powder for regular maintenance.

        As for my particular issue, after three more loads of towels and high-heat drying the smell seems to be gone. It seems almost like it was the rubber gasket cooking off some manufacturing chemicals or something. I read the owners manual in the troubleshooting and the closest it says is “strange odor” and the answer is “new machine.” or something to that effect…

        Anyway I would definitely recommend that when this machine is new the user run 5+ good-sized loads through it (with normal heat drying) of old towels or something they don’t really care about. Extended drying might make this a faster process too. The smell definitely got on my clothes, and while it does seem to be fading away it is frustrating for an expensive machine to do this.

        • No problem Andy, just to clarify – for the regular maintenance I was referring to the vinegar – it kills yeasts and bacteria which accumulate after some time in the wet environment of washers. Baking soda I’d use mainly in cases where the machine has strange odors from chemicals, etc. Again thanks for your tips.

      • Andy Chromatic

        Also, I will update the vent issue here as well since it is specific to this model. LG support says the machine should not be emitting any air/steam/heat at all. Only water through the drain hose. Service is on its way.

        So if anyone feels hot air coming out of the back of the machine, give them a call.

      • Andy Chromatic

        Okay, venting issue update. LG service came out, and that guy claims the valve is supposed to let pressure out during drying. This is somewhat disappointing since LG support told me absolutely nothing should be coming out. The design of the valve itself also makes it look like pressure inside should push the valve up and out, and therefore seal it shut.

        I don’t know what to do here. The service guy said the pressure “has to go somewhere”, which makes sense. But I wish I could get a definitive answer on how this design is supposed to work.

        If anyone could test their machine during the dry cycle I would be grateful.

        • From my experience, condense dryers, regardless of a brand or model, always make the environment a little bit damp.

  • Andy Chromatic

    How does one turn off the melody at the end? It stopped being cute after the third load. I can’t seem to find this in the manual anywhere.

    • Andy Chromatic

      LG says the chimes and whatnot cannot be changed or turned off. Once this is out of warranty I am going to find whatever causes that noise and cut the wires.

      • That was funny, yes I can imagine that it can stop being cute after some time) Btw. it’s by an Austrian composer Franz Schubert: “Die Forelle” (German for “The Trout”) – Fischer-Dieskau, Moore.

        For some reason Korean people like this kind of beepers, even in metro, etc.

  • Andy Chromatic

    Updating here, as I had the issue where a LOT of steam was coming out of the vent near the water hoses on the machine.

    First off, I must express, again, extreme displeasure at LG service. One support person told me this was absolutely normal. I called them again, noted that there was a lot condensation on my wall, and they agreed to a service call since the machine was is still under warranty. So, the tech came out, and I think he had never worked on a washer dryer combo before. He insisted this was supposed to vent out air while drying. However, if you look at the check valve, it is clear that it is supposed to seal from pressure inside the drum, and therefore not let air OUT. I believe it is there so that the door is easier to open, ie, no vacuum while opening the door which would make that difficult.

    So, I hoped they were right and the condensation would be no big deal. I was wrong! Just a month we noticed water under the carpet outside of the room the washer is in. Turns out the steam was condensing on the cold water hose, and this was dripping inside the wall and then leaking out under the drywall. I am glad I caught this when I did or this would have been a large amount of damage, just because LG service apparently does not know what they are talking about. As a side note there was a bunch of lint around this vent as well, another sign that this vent is NOT meant to have air go out.

    So, instead of calling an incompetent service staff again I decided to fix this myself. I went back into the machine, got to the little “mushroom” valve, and adjusted the height of the rubber piece on the stem. (Just like in the FAQ.) The rubber adjuster was pushed into its most compact position and had some double-sided tape holding it there, so it was a pain to get free. Without that double sided tape the rubber thing just slides all the way back down, which will make the valve fail again, so you will need tape to hold it in the position you select. I gave it a good cm of extension from where it was.

    Anyway, after this fix there is zero steam or air coming out of the vent. The door is still easy to open and close. Drying actually seems a bit faster than before. Which makes sense because now the machine is working the way it is supposed to.

    Sorry for the long story! If you have this problem do NOT believe a word LG support says. Open it up and fix it yourself. It is very easy, literally three screws to loosen and you are at the valve.