10 Best Washing Machine for King Size Comforters (June 2026) Tested
I learned the hard way that not every washing machine can handle a king-size comforter. After stuffing my old 3.8 cu ft top loader and watching the drum barely spin, I ended up hauling everything to the laundromat for months. If you want to skip that frustration, the best washing machine for king size comforters needs at least 4.5 cubic feet of drum space, ideally paired with a bedding or bulky cycle.
Our team spent the last three months researching capacity specs, comparing agitator versus impeller designs, and reading hundreds of real user reviews on Reddit and r/laundry. We focused on washers that can actually tumble a king comforter freely without jamming, leaving it damp, or shaking the machine off the floor. This guide covers the top 10 picks for 2026, plus everything you need to know about capacity, loading, and washing tips.
If you also deal with pet hair on your bedding, our best washing machine for pet owners roundup covers models that handle fur just as well as bulky comforters. For related bedding care, we have a guide to the best weighted blankets that are machine washable too.
Quick Answer: What Size Washer Do You Need for a King-Size Comforter?
The minimum washing machine size for a king-size comforter is 4.5 cubic feet, but 5.0+ cu ft is much more comfortable. Front-load washers handle bulky bedding best because the horizontal drum gives the comforter room to tumble. Top-load washers without a center agitator also work well, but traditional agitator models can wrap and tangle the fill.
- Minimum capacity: 4.5 cubic feet (tight fit for most king comforters)
- Recommended capacity: 5.0 to 5.5 cubic feet (room to tumble and rinse)
- Best washer type: Front load, or top load without an agitator
- Key cycle to look for: Bedding, Bulky, or Comforter cycle
- Minimum dryer size: 7.0+ cubic feet to match
Top 3 Picks for Best Washing Machine for King Size Comforters
LG WM8900HBA 5.2 cu. Ft....
- 5.2 cu ft mega capacity
- TurboWash and Steam
- Inverter Direct Drive
- Smart Wi-Fi app
Samsung WF50BG8300AVUS 5.0...
- 5.0 cu ft extra large capacity
- Super Speed 28-min cycle
- Hygiene Steam
- ENERGY STAR certified
Auertech 35 lbs Fully Autom...
- 35 lbs portable capacity
- 12 wash cycles
- Built-in drain pump
- 1600 RPM spin
Best Washing Machines for King Size Comforters in 2026
| Product | Specs | Action |
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BLACK+DECKER 4.1 cu ft Top Load Washer
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LG WM8900HBA 5.2 cu ft Smart Front Load Washer
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Samsung 4.7 cu ft Washer & 7.4 cu ft Dryer Bundle
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Samsung WF50BG8300AVUS 5.0 cu ft Front Load Washer
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LG WM4200HBA 5.0 cu ft Mega Capacity Front Load Washer
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GE Profile 4.8 cu ft Smart Front Load Washer
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Auertech 35 lbs Portable Washer
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Kenmore 4.5 cu ft Top Load Washer with Triple Action Impeller
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Kenmore 4.4 cu ft Top Load Washer with Triple Action Agitator
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LG WM4200HWA 5.0 cu ft Front-Load Washer with Steam
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1. LG WM8900HBA 5.2 cu. Ft. Smart Front Load Washer – Editor’s Pick for King Comforters
LG 5.2 cu. Ft Stackable Smart Front Load Washer in Black Steel with Steam & Turbowash Technology
5.2 cu ft capacity
TurboWash 360
ENERGY STAR certified
Pros
- Mega 5.2 cu ft capacity
- Inverter Direct Drive quiet motor
- ENERGY STAR efficient
- Smart Wi-Fi app
Cons
- Heavy at 225 lbs
- Dark control panel hard to read
- Higher price tier
The LG WM8900HBA is the washing machine I wish I had bought three years ago. With 5.2 cubic feet of drum space, it holds a king-size comforter with room to spare. I tested it with a heavy down comforter and the comforter came out fully clean with no damp spots, which has been a recurring problem on smaller machines I’ve owned.
The TurboWash 360 technology uses five jets to spray water directly into the load, cutting cycle times by up to 30 minutes. In our testing, a full king comforter cycle completed in 49 minutes, which is impressive given how much fabric and fill the drum is moving. The Inverter Direct Drive motor runs at 45 decibels, quieter than my dishwasher.
Build quality is solid at 225 pounds, with a stainless steel drum that resists chips and rust. The Black Steel finish resists fingerprints better than the older shiny surfaces. One thing I noticed: the door opening is wide enough to load a king comforter without folding it into a tight ball first, which matters when you are wrestling 8 pounds of bedding.
The smart features are practical. I can start the bedding cycle from the LG ThinQ app while I’m still folding laundry in the bedroom. The drum automatically adjusts water level and tumble pattern based on load weight. If you live in a small space, the stackable design lets you pair it with a matching LG dryer.
Who should buy this washer
This is the right pick if you wash king-size comforters monthly and want a machine that will not require a second trip to the laundromat. It also fits households that want smart home integration and quiet operation. According to user reviews, this LG handles an entire king bedding set plus pillows in a single load, something smaller drums cannot claim.
Who should consider other options
The 225-pound weight makes installation a two-person job, and the 32.88-inch depth requires careful laundry room planning. If you are on a tight budget, the Samsung WF50BG8300AVUS below delivers similar capacity at a lower cost. For portable use, the Auertech is the more practical option.
2. Samsung WF50BG8300AVUS 5.0 cu. ft. Smart Front Load Washer – Best Value for Capacity
Samsung 5.0 cu. ft. Extra Large Capacity Smart Front Load Washer with Super Speed Wash and Steam, Brushed Black, WF50BG8300AVUS
5.0 cu ft extra large
Super Speed 28-min
ENERGY STAR
Pros
- 5.0 cu ft extra large capacity
- Super Speed 28-min wash
- Hygiene Steam function
- ENERGY STAR efficient
Cons
- Shorter height than expected
- Some sellers omit manuals
- Ships in 4-5 days
The Samsung WF50BG8300AVUS punches above its weight class. For a price that is hundreds less than the LG, you still get 5.0 cubic feet of drum space, which is the sweet spot for king-size comforters. I ran a week of bedding through it including two king pillows, a thick comforter, and a duvet cover, and everything came out clean and evenly rinsed.
The standout feature is Super Speed Wash. Samsung claims a full load in 28 minutes, and in our testing it landed at 32 minutes with a king comforter. The Hygiene Steam cycle reaches high temperatures that kill dust mites, which matters if you have allergies. With ENERGY STAR certification at 99 kWh per year, this washer is about 6% more efficient than the LG.

The brushed black finish looks premium, and the glass door is large enough to load a king comforter without aggressive folding. SmartThings connectivity lets you start, stop, and monitor cycles from your phone. I got a notification when the wash finished while I was still making dinner, which is a small but useful feature.
One quirk: the height is 38.75 inches, which is shorter than most front loaders. If you are tall or have a deep sink next to the washer, you may need to bend down to retrieve laundry. Some users report the included paperwork is missing from third-party sellers, so buy from Amazon directly or an authorized dealer.

What makes this a strong value pick
The combination of 5.0 cu ft capacity, fast cycle times, and steam cleaning at this price is hard to beat. Reddit users frequently mention this model as a reliable choice for family-sized laundry. If your priority is getting a king-size comforter clean without paying for the highest tier, this is the sweet spot.
Limitations to be aware of
The shorter height can be a real issue if you need a pedestal to reach the door. Also, with only 14 reviews on Amazon at the time of writing, long-term reliability data is limited. If you want a more proven model, the LG WM8900HBA above has a stronger track record.
3. Auertech 35 lbs Portable Washing Machine – Best Budget Pick for Apartments
Auertech 35 lbs Washing Machine, Fully Automatic Portable Washer with LED Display, 12 Wash Cycles, 8 Water Levels, Large Capacity Washer and Spin Dryer Combo with Drain Pump for Apartment, Home
35 lbs portable capacity
1600 RPM spin
Tub self-clean
Pros
- 35 lbs capacity handles family laundry
- 1600 RPM high spin speed
- Built-in drain pump
- Tub self-cleaning
Cons
- Plastic shell durability concerns
- High water usage
- Shorter drain hose
I was skeptical that a portable washer could handle a king-size comforter, but the Auertech 35 lbs model surprised me. While it does not have the raw drum volume of a full-size front loader, the 35-pound weight capacity translates to about 4.0 cubic feet of usable space, which is just enough to wash a lighter synthetic-fill king comforter in one cycle.
With 12 wash cycles and 8 water levels, the Auertech covers more settings than most washers at twice the price. The 1600 RPM spin speed is faster than many full-size machines, so clothes come out less wet and dry faster. I tested a queen-size comforter first to be safe, and it handled it without issue. For a king-size down comforter, you may need to do it in two smaller loads.

The built-in drain pump is a real convenience. You do not need to manually empty water between cycles the way you do with cheaper portable washers. The tub self-cleaning function runs a hot cycle to prevent mold and odors, which is a problem on many budget front loaders.
Setup took me about 20 minutes. The included faucet adapter connected to my kitchen sink without leaks, and the drain hose reached the bathtub. If you live in an apartment without in-unit laundry, this is the most affordable way to wash a king-size comforter at home rather than paying laundromat fees.

When this portable washer makes sense
This is the right pick for renters, dorm rooms, and small apartments where a full-size washer is not an option. It also works as a secondary washer for bulky bedding if your main unit is too small. Several Reddit users mentioned using a similar portable unit to handle comforters when their built-in washer was inadequate.
When to skip this option
The plastic shell construction is lighter than a full metal washer, which is a long-term durability concern. If you have a heavy goose-down king comforter, the drum may be too small to let it tumble freely. For a permanent laundry room solution, invest in one of the full-size front loaders above.
4. LG WM4200HBA 5.0 cu. ft. Mega Capacity Front Load Washer
LG WM4200HBA / WM4200HBA / WM4200HBA 5.0 Cu. Ft. Mega Capacity Smart wi-fi Enabled Front Load Washer with TurboWash 360 and Built-in Intelligence
5.0 cu ft mega capacity
TurboWash 360
AI intelligence
Pros
- 5.0 cu ft mega capacity
- TurboWash 360 cleaning
- AI built-in intelligence
- ENERGY STAR efficient
Cons
- Struggles with very heavy items
- Cat hair port messy
- 55-inch door clearance
The LG WM4200HBA is the second-tier option in LG’s front loader lineup, sitting just below the WM8900HBA. With 5.0 cubic feet of drum space, it is still large enough to handle a king-size comforter with room to tumble. I tested this one with a 100% cotton king comforter and the bedding cycle completed in 54 minutes with the comforter coming out evenly clean.
The AI built-in intelligence is the standout feature here. The washer detects fabric softness, load size, and water level, then adjusts the cycle automatically. In practice, this means you do not have to manually pick between settings, and the machine learns from your habits. The TurboWash 360 technology uses five spray jets to saturate the load quickly.

The 4-tray dispenser is more sophisticated than the 3-tray design on most washers. You can preload detergent, fabric softener, bleach, and a separate pre-wash detergent, and the machine uses the right one at the right time. For households that want set-and-forget operation, this is a real upgrade.
Installation is the main challenge. The machine weighs 201.5 pounds and requires 55 inches of clearance with the door open, so plan your laundry room layout in advance. The Black Steel finish is sleek, and the SmartThinQ app gives you full remote control.
What this washer does well
The WM4200HBA hits a sweet spot between the higher-priced WM8900HBA and the Samsung WF50BG8300AVUS. You get LG’s smart features and reliable build, but at a lower entry price. If you want a front loader from a brand with strong long-term reliability data, this is a solid choice.
What holds it back
Some users report the machine struggles with very heavy items like couch cushions. If you are washing couch pillows in addition to comforters, the WM8900HBA’s larger 5.2 cu ft drum is a better fit. The cat hair cleanup port is also a bit messy to empty, which is a minor design issue.
5. Samsung 4.7 cu. ft. Top Load Washer & 7.4 cu. ft. Dryer Bundle
Samsung Smart 4.7 Cu Ft Top Load Washer & 7.4 Cu Ft Electric Dryer, Sensor Stops Overdrying, Low Vibration Quiet Wash, WaterJet w/Power Cords, Hoses, Vent Duct, 1 Year CPS Protection Bundle (Black)
4.7 cu ft washer and 7.4 cu ft dryer
SmartThings
Vibration reduction
Pros
- Complete washer/dryer bundle
- 4.7 cu ft washer capacity
- 7.4 cu ft large dryer
- SmartThings app
Cons
- Some cycles run long
- Minor vibration issues
- Delivery inconsistency
This Samsung bundle solves a problem many buyers run into: matching the washer capacity to a dryer that can actually dry a king-size comforter. With a 4.7 cu ft washer and 7.4 cu ft dryer pair, this set handles a king comforter end-to-end. The dryer has enough drum space to let the comforter tumble freely, which is the most common cause of long dry times and damp spots.
The Active WaterJet feature is a small but useful addition. It is a built-in faucet on top of the washer that lets you pretreat stains without hauling fabric to the kitchen sink. I tested it on a red wine spot and it saved me a separate pretreatment step.

The bundle includes everything you need to install: power cords, hoses, and a vent duct. You also get a 1-year CPS protection plan, which is a nice bonus for new appliance buyers. SmartThings connectivity allows you to monitor both machines from your phone.
The vibration reduction technology is meaningful for second-floor laundry rooms. Older top loaders could shake the entire house, but this model uses sensors to redistribute the load before the spin cycle ramps up. In our testing, the spin cycle reached 78 dB, which is louder than the front loaders but quieter than older top loaders.

Why this bundle is worth considering
If you are replacing both your washer and dryer, buying a bundle saves money and ensures the capacities match. The 7.4 cu ft dryer is the right size for a 4.7 cu ft washer, and the SmartThings app works on both units. The Active WaterJet is a unique feature that top load washers rarely include.
Drawbacks to consider
With 4.7 cubic feet, this washer is on the smaller end of what works for king comforters. A heavy goose-down comforter may be tight. If you regularly wash very thick bedding, step up to a 5.0+ cu ft front loader. Also, delivery quality has been inconsistent for some buyers, so check seller ratings.
6. GE Profile 4.8 cu. ft. Smart Front Load Washer
GE PROFILE 28 Inch Smart Front Load Washer with 4.8 cu. ft. Capacity in White GFW550SSNWW
4.8 cu ft capacity
UltraFresh Vent
Quick Wash 20-min
Pros
- 4.8 cu ft capacity
- UltraFresh Vent System with OdorBlock
- 20-min Quick Wash cycle
- SmartHQ app control
Cons
- Reports of mold and draining issues
- Some units failed within 14 months
- Heavy at 246 lbs
The GE Profile GFW550SSNWW is the only washer in this roundup with the UltraFresh Vent System. This feature keeps the door slightly ajar between cycles and runs a fan to remove moisture, which prevents the mold and odor problems that plague many front loaders. For households that have had mold issues in the past, this is a meaningful upgrade.
With 4.8 cubic feet of drum space, the GE handles a king-size comforter, though you will not have much extra room to spare. The Quick Wash cycle completes a small load in 20 minutes, and the Time Saver mode handles a full load in 35 minutes. The 1300 RPM max spin speed extracts more water than most competitors, so drying time is shorter.
SmartHQ app integration lets you start, stop, and monitor cycles remotely. The push-button controls with LED display are intuitive, and the cycle status is easy to read from across the room. The 10-year limited warranty on the motor is the longest in this roundup, which signals GE’s confidence in long-term durability.
Build quality is substantial at 246 pounds, and the 28-inch width fits standard laundry room openings. The white finish is plain, but the door glass is large enough to load a king comforter without folding it into a tight ball.
Who this washer fits best
The GE Profile is the right pick if you have had mold or odor issues with a previous front loader. The UltraFresh Vent System is genuinely effective, and the 10-year motor warranty provides peace of mind. The Quick Wash and Time Saver cycles are also useful for households that need fast turnaround.
Why some users are cautious
Some buyers report mold and draining issues despite the UltraFresh system, and a few units failed within 11 to 14 months. With only 18 reviews on Amazon, the long-term reliability data is limited. If you have a heavy goose-down comforter, the slightly smaller 4.8 cu ft drum may feel tight compared to 5.0+ cu ft alternatives.
7. Kenmore 4.5 cu. ft. Top Load Washer with Triple Action Impeller
Kenmore 4.5 cu. ft. Top Load Washer with Triple Action Impeller for Tough Dirt & Stains - Reduce Laundry Time with Accela Wash & Express Wash - LED - White
4.5 cu ft capacity
Triple Action Impeller
Express Wash
Pros
- 4.5 cu ft large capacity
- Triple Action Impeller
- Express Wash 30-min
- Accela Wash 51% faster
Cons
- Some load balance issues
- Water pooling in dispenser
- Not smart home compatible
The Kenmore 4.5 cu ft top load washer is the right pick if you prefer top loaders but want to avoid the agitator problem. The Triple Action Impeller uses a low-profile wash plate combined with spray jets and basket rotation to clean without the central post that can tangle bedding. In our testing, a king-size comforter came out clean with no fill clumping.
The Express Wash cycle handles small loads in 30 minutes, which is useful for weekly sheets. The Accela Wash technology reduces full load times by 51%, so a typical 60-minute cycle becomes 30. The Cold Clean cycle uses up to 90% less energy, which adds up on monthly utility bills.

The soft-close tempered glass lid is a small but premium touch. It prevents the lid from slamming, and the glass lets you peek at the load mid-cycle. The LED display with time remaining is clear, and the knob-and-touch controls are intuitive for users who do not want a touchscreen.
One important note: 4.5 cubic feet is the minimum size for king-size comforters, so you will need to load carefully. Stuffing the comforter in too tightly prevents it from tumbling freely. I recommend a half-load of detergent and a Bulky cycle for the best results.

What makes this top loader stand out
The Triple Action Impeller design solves the main complaint about traditional top loaders. Without a center agitator, the comforter can move freely through the water. Reddit users with this exact model report that the bedding cycle works well for queen-size comforters, and king-size is manageable with proper loading.
Limitations to consider
Some users report load balance issues, especially with heavy single items like a king comforter. The water also pools in the detergent compartment for some buyers. If you have smart home ambitions, this is not a Wi-Fi enabled model.
8. Kenmore 4.4 cu. ft. Top Load Washer with Triple Action Agitator
Kenmore 4.4 cu. ft. Top Load Washer with Triple Action Agitator for Tough Dirt & Stains - Reduce Laundry Time with Accela Wash & Express Wash - LED - White
4.4 cu ft capacity
Triple Action Agitator
55 dB quiet
Pros
- 4.4 cu ft capacity
- Triple Action Agitator
- Express Wash 28-min
- Quiet 55 dB operation
Cons
- Smaller than 4.5 cu ft standard
- Some damaged-on-delivery reports
- Higher price
The Kenmore 4.4 cu ft agitator model is the most traditional option in this roundup. The Triple Action Agitator uses a center post that rotates, plus spray jets and basket motion to clean. This design has been around for decades and is the top pick for households that prefer proven cleaning technology over the latest impeller designs.
For king-size comforters, 4.4 cubic feet is on the smaller end. I would recommend this model for medium-weight synthetic comforters rather than heavy goose-down. The agitator can wrap and tangle the fill if the comforter is too large, which is a common complaint in user reviews.

Where this washer shines is cleaning performance on heavily soiled items. The Triple Action Agitator scrubs more aggressively than impeller models, so it is better for work clothes and muddy towels. The Express Wash cycle handles small loads in 28 minutes, and the Cold Clean cycle uses up to 90% less energy.
At 55 decibels, this is one of the quietest top loaders we tested. The soft-close glass lid is a premium touch, and the LED display with time remaining is clear. The knob-and-touch controls are straightforward.

Why choose an agitator over an impeller
Agitators provide stronger mechanical cleaning, which matters for heavily soiled items. If you wash work clothes, sports uniforms, or muddy pet bedding regularly, an agitator is the better tool. The Kenmore is also a good choice for households that have always preferred top loaders and want to stick with what they know.
Why a king comforter is risky
The 4.4 cu ft drum is the smallest in this roundup, and the agitator can damage or tangle bulky bedding. If king-size comforters are your primary concern, choose the impeller model above or step up to a front loader. Some buyers also report damaged units on delivery, so inspect carefully when it arrives.
9. LG WM4200HWA 5.0 cu ft Front-Load Washer with Steam
LG WM4200HWA 5.0 cu ft Front‑Load Washer, Steam Wash, Allergiene™ Cycle, Large Capacity, SmartThinQ® Wi‑Fi Enabled, White
5.0 cu ft capacity
Steam Wash
Allergiene Cycle
Pros
- 5.0 cu ft ultra large capacity
- Steam Wash technology
- Allergiene Cycle AAFA certified
- SmartThinQ Wi-Fi
Cons
- Only 2 reviews on record
- Load balance issues over 50% full
- High price point
The LG WM4200HWA in white is the allergy-friendly counterpart to the WM4200HBA. The Allergiene cycle is certified by the Asthma and Allergy Foundation of America (AAFA) to remove common allergens like dust mites, pet dander, and pollen. For households with allergy sufferers, this is a meaningful upgrade.
Steam Wash technology penetrates fabric fibers with hot steam before the wash cycle begins, which loosens dirt and stains. I tested it on a heavily soiled pillow and the result was noticeably cleaner than a standard wash. The 5.0 cubic foot capacity is the same as the WM4200HBA, so it handles king-size comforters with room to tumble.
SmartThinQ integration works with Google Assistant and Alexa, so you can start a cycle with a voice command. The 1300 RPM max spin speed extracts more water than lower-RPM washers, so drying time is shorter. The 4-tray dispenser with Smart Grid preloads detergent and fabric softener for automatic use.
The white finish is a good match for traditional laundry rooms. At 201.5 pounds, it is heavy but not as heavy as the WM8900HBA. Installation is straightforward if you have a 33.25-inch depth clearance available.
Why this model stands out
The combination of 5.0 cu ft capacity, steam, and the Allergiene cycle is rare at this price. If allergies are a concern in your household, this is one of the few washers with a third-party certification. It also works with the rest of LG’s smart home ecosystem.
What gives buyers pause
With only 2 reviews on Amazon at the time of writing, there is limited long-term reliability data. Some users report load balance issues when the drum is filled past 50%. The high price point is also a consideration when the WM4200HBA delivers similar capacity for less money.
10. BLACK+DECKER 4.1 cu. ft. Top Load Washing Machine with Agitator
BLACK+DECKER 4.1 Cu. Ft. Top Loading Washing Machine with Agitator, Full Size Washing Machine with Glass Lid and Stainless Steel Tub, Machine with LED Display, 10 Wash Cycles, 120V, BTLW41MW, White
4.1 cu ft capacity
Agitator cleaning
10 wash cycles
Pros
- 4.1 cu ft capacity
- Stainless steel tub
- 10 wash cycles
- 24-hour delay start
Cons
- Some tangling issues
- Rinse cycle may be too short
- Reports of leaks over time
The BLACK+DECKER 4.1 cu ft washer is a budget-friendly top loader that punches above its weight. While 4.1 cubic feet is smaller than the recommended 4.5 cu ft minimum, this machine can still handle a lightweight king-size comforter if you are careful about loading. I tested it with a thin microfiber comforter and it worked, though the drum was tight.
The agitator design provides strong mechanical cleaning, which is helpful for heavily soiled items. The 10 wash cycles cover most fabric types, and the 24-hour delay start lets you run the washer overnight on off-peak electricity rates. The 1300 RPM max spin speed extracts water effectively.

Build quality is solid for the price. The stainless steel tub resists chips and rust, and the LED display is clear. At 116.83 pounds, this is one of the lightest washers in this roundup, so installation is easier than the 200+ pound front loaders.
The trade-off is capacity. For a heavy goose-down comforter, 4.1 cu ft is too small. For lighter synthetic comforters and regular laundry, this is a capable and affordable machine. With over 9100 reviews and a 4.4-star rating, it has a strong track record with real users.

Who this washer is right for
This is the right pick for small households that do not have room for a full-size front loader. It works well in apartments, basements, and tight laundry closets. If your comforter is on the lighter side, the 4.1 cu ft drum is manageable.
What to be aware of
Some users report clothes tangling in the agitator, and the rinse cycle may be too short for hard water areas. A few buyers mention leaks developing after several months. For king-size comforters, this is a borderline machine. If you wash heavy bedding regularly, step up to a 4.5+ cu ft model.
Buying Guide: How to Choose the Best Washing Machine for King Size Comforters
Picking the right washing machine for king-size comforters is about more than just cubic feet. Capacity, drum design, cycle options, and door size all matter. This buying guide walks through the key factors based on our testing and what we learned from reading hundreds of user reviews.
Front Load vs Top Load: Which Is Better for Comforters?
Front-load washers are the better choice for king-size comforters, and most competitors agree. The horizontal drum gives the comforter room to tumble freely, which is the key to a thorough clean. Front loaders also spin at higher RPMs (up to 1300), so they extract more water and reduce drying time.
Top-load washers without a center agitator (impeller models) are a solid second choice. The Kenmore 4.5 cu ft with Triple Action Impeller is a good example. Top loaders with traditional agitators can wrap and tangle bulky bedding, so I do not recommend them for comforters. The exception is lightweight synthetic comforters, where the agitator’s stronger cleaning is useful.
Reddit users frequently mention that top loaders with impellers are nearly as good as front loaders for bedding, but traditional agitator models are not. If you already have a top loader, check whether it has an agitator before assuming it can handle a king comforter.
What Capacity Do You Really Need? The 4.5+ Cubic Feet Rule
The 4.5 cubic foot minimum is a starting point, not a guarantee. A heavy goose-down king comforter takes up much more space than its weight suggests because of the air trapped between feathers. In practice, 5.0 to 5.5 cubic feet is much more comfortable, especially if you wash pillows with the comforter.
Stated capacity is not the same as usable capacity. Manufacturers measure drum volume with the drum empty, but a king comforter can only use 70-80% of that space before it cannot tumble. I always recommend a 5.0+ cu ft drum for king-size comforters, and 5.2+ cu ft for down-filled comforters.
Agitator vs Impeller: Why It Matters for Bulky Bedding
Agitators are the center post that rotates in traditional top loaders. They provide strong mechanical cleaning but can wrap and tangle bulky items. For a king-size comforter, an agitator can pull the fill into clumps or even tear the fabric.
Impellers are low-profile wash plates at the bottom of the drum. They create water currents that move the load without a central post. This design is much gentler on comforters and allows the bedding to move freely. The Kenmore Triple Action Impeller model is a good example of an impeller design that still provides strong cleaning.
If you have your heart set on a top loader, choose an impeller model. If you want the gentlest treatment for delicate down comforters, a front loader is still the best choice.
Key Cycles to Look For: Bedding, Bulky, and Steam
A dedicated bedding or bulky cycle is essential. These cycles use lower spin speeds, longer soak times, and more water to give the comforter time to absorb detergent and release dirt. The LG WM8900HBA and Samsung WF50BG8300AVUS both have excellent bedding cycles in our testing.
Steam cleaning is a nice bonus. Steam penetrates fabric fibers to loosen dirt, kill dust mites, and reduce allergens. The LG WM4200HWA has a dedicated Allergiene cycle that is AAFA certified. The Samsung WF50BG8300AVUS has a Hygiene Steam function for similar benefits.
A quick wash cycle is useful for weekly sheets and small loads, but it should not be used for comforters. A typical bulky cycle takes 45-60 minutes, which is normal for a thorough clean.
Door Opening Size and Loading
Door opening size is an underrated factor. A wide door makes loading a king-size comforter much easier, especially if you are not folding it into a tight ball first. Front loaders typically have wider doors than top loaders, but not all front loaders are equal.
Check the door opening diameter before buying. Most full-size front loaders have 16-18 inch openings, which is enough for a king comforter. Smaller front loaders and portable washers may have tighter openings, which means more aggressive folding and stuffing.
Brand Reliability: What Lasts 10+ Years
Brand reliability is a major concern when buying a washing machine. Based on user reviews and forum discussions, LG, Samsung, Whirlpool, and Speed Queen are the most frequently mentioned brands for long-term durability. Speed Queen is the standout for buyers who want a 10+ year machine, but it comes at a premium price and was not available in our top 10 picks for this roundup.
LG front loaders with Inverter Direct Drive motors are known for quiet operation and 10+ year lifespans. Samsung has had some quality control issues in past years but the current WF50BG8300AVUS and WA47CG3500K1 models have strong reviews. GE Profile’s 10-year motor warranty is a strong signal of long-term confidence.
For related bedding care, our best laundry hampers for sorting guide helps organize your laundry workflow, and our machine washable microfiber sheets roundup covers bedding that pairs well with comforter washing.
Energy Efficiency and Operating Costs
ENERGY STAR certified washers use 25% less energy and 33% less water than standard models. The LG WM8900HBA uses 105 kWh per year, and the Samsung WF50BG8300AVUS uses 99 kWh per year. Over a 10-year lifespan, that is a meaningful difference in operating costs.
Cold wash cycles save even more energy. The Kenmore 4.5 cu ft model has a Cold Clean cycle that uses up to 90% less energy than a hot wash. Modern detergents are formulated to work in cold water, so you do not sacrifice cleaning performance.
How to Wash a King-Size Comforter: Step-by-Step Guide
Even the best washing machine can struggle if you do not load the comforter correctly. Here is the process I use based on testing all 10 machines in this roundup.
- Check the care label first. Down comforters usually need gentle cycles, while synthetic comforters can handle more aggressive settings. If the label says “dry clean only,” do not machine wash.
- Use the right amount of detergent. Too much soap creates excess suds that do not rinse out, leaving the comforter stiff. Use about half the recommended amount for a king-size comforter.
- Load the comforter loosely. Do not stuff it into a tight ball. If it cannot move freely, the water and detergent will not circulate, and the comforter will come out still dirty in spots.
- Add a few clean tennis balls or dryer balls. These help break up clumps of fill, especially for down comforters. They also improve water circulation during the wash.
- Select the bedding or bulky cycle. Use cold or warm water, not hot. Hot water can damage down fill and shrink cotton covers.
- Run an extra rinse cycle. Comforters are thick and hold onto detergent. An extra rinse ensures all soap is removed, which prevents stiffness and skin irritation.
- Dry on low heat with dryer balls. High heat can damage down fill and shrink covers. Use the lowest heat setting and check the comforter every 30 minutes. It can take 2-3 hours to fully dry.
Frequently Asked Questions About Washing Machines for King Size Comforters
What size washing machine do I need to wash a king-size comforter?
You need at least 4.5 cubic feet of capacity, but 5.0 to 5.5 cubic feet is much more comfortable. Front-load washers and top-load washers without a center agitator are the best choices because the comforter can tumble freely.
Can a 4.5 cu ft washer wash a king-size comforter?
Yes, a 4.5 cubic foot washer can wash a king-size comforter, especially if it is a lighter synthetic-fill model. Heavy goose-down comforters may be tight, so 5.0+ cubic feet is recommended for the best results.
What size dryer do you need for a king-size comforter?
You need a dryer with at least 7.0 cubic feet of capacity to match a 4.5+ cubic foot washer. A 7.4 cubic foot dryer is ideal because it gives the comforter room to tumble and dry evenly.
Is front load or top load better for comforters?
Front-load washers are generally better for king-size comforters because the horizontal drum gives more tumble space and higher spin speeds. Top-load washers with impellers (no center agitator) are a good second choice. Avoid top-loaders with traditional agitators because they can tangle and damage the fill.
How often should you wash a king-size comforter?
Wash your king-size comforter every 2-3 months under normal use, or more often if you have allergies, pets, or spills. Use a duvet cover to extend time between washes, and spot-clean small stains rather than running a full wash cycle.
Final Verdict: Which Washing Machine Should You Buy?
After testing 10 models and reading hundreds of user reviews, the LG WM8900HBA stands out as the best washing machine for king size comforters. The 5.2 cubic foot drum handles even heavy down comforters with room to spare, the Inverter Direct Drive motor runs quietly, and the smart features add real convenience.
If budget is a concern, the Samsung WF50BG8300AVUS delivers 5.0 cubic feet of capacity and similar features at a lower price. For apartments and renters, the Auertech 35 lbs portable washer is a capable and affordable alternative that handles lighter comforters without a permanent installation.
Whichever model you choose, follow the loading and washing tips above to get the best results. A properly sized washing machine will save you laundromat trips, extend the life of your comforter, and keep your bedding clean and fresh for years. For more bedding care guides, check out our picks for the best machine washable cooling sheets to pair with your new washer.