A weighted blanket is heavy when it’s dry. Soaked with water it gets a lot heavier, and that is the whole problem with washing one.
Most weighted blankets can be cleaned at home. The question is how. Learning how to wash a weighted blanket starts with two checks before any water is involved: what the care label says, and whether your washing machine can actually handle the weight. Get those right and the rest is a gentle, cold, slow process. Get them wrong and you can tear the inner pockets, spill beads into your drum, or throw an unbalanced load hard enough to damage the washer.
Here’s the approach we’d suggest, from the cover to the fill to drying, plus straight answers to the questions people ask most.
Contents
- Start with the label and the weight
- Wash the cover, not the whole blanket
- Glass beads vs plastic pellets
- How to wash a weighted blanket in a machine
- Hand washing and spot cleaning
- Drying without damaging the fill
- How often to wash it
- A quick note on choosing the weight
- When to call a professional
- The bottom line
- Frequently asked questions
Key takeaways
- Read the care label first; it tells you the fill, the water temperature and whether the inner blanket can be washed at all.
- A weighted blanket gets much heavier when wet, so its dry weight has to sit comfortably inside your washer’s rated capacity.
- If the blanket has a removable duvet cover, wash the cover and spot clean the insert — that handles most everyday cleaning.
- Plastic poly pellets are the more heat-sensitive fill; keep them to cold water and low or no dryer heat.
- Some manufacturers advise against putting the weighted insert in a home washer at all, so the maker’s instructions are the final word.
Start with the label and the weight
Before you figure out how to wash a weighted blanket, find its care tag. It should list the outer fabric, the fill (usually glass beads or plastic pellets) and the washing instructions. If the tag is gone, the manufacturer’s website or the owner’s manual usually has the same information.
Then look at the weight, printed on the tag or packaging. Compare it with your washing machine’s capacity in its manual. A blanket that seems fine dry can overload a drum once it’s soaked through. One manufacturer, Gravity, says in its care guide that it doesn’t recommend putting its weighted inserts in a home washing machine, because of the extra wear and because the insert will likely exceed the machine’s capacity. If your washer isn’t rated for the load, a large commercial machine or hand washing is the safer route.
If the label says spot clean only, or dry clean only, believe it. Those instructions exist because the inner baffles, the fabric or the fill won’t survive a full soak.
Wash the cover, not the whole blanket
Many weighted blankets come in two parts: a weighted insert and a removable duvet cover. If yours does, that changes everything.
The cover is where sweat, skin oils and spills collect. It’s a normal piece of fabric with no fill, so it can usually be machine washed and dried like any other duvet cover, following its tag. Unzip it, turn it inside out, and wash it with similar colors.
The insert then only needs occasional attention. Spot clean it when something gets through, air it out, and give it a full wash only when the label allows and it truly needs one. For most households, that’s the simplest answer to how to wash a weighted blanket week to week: wash the cover and leave the heavy part alone.
Glass beads vs plastic pellets
The fill changes how much heat and handling the blanket can take. Cleveland Clinic describes weighted blankets as filled with plastic pellets or glass beads, and those are the two you’re most likely to find.
| Fill | Water | Drying | Things to watch |
|---|---|---|---|
| Glass beads | Cold (warm only if the label allows), gentle cycle | Low heat, or air dry flat | Small and dense, so the blanket is heavy for its size when wet |
| Plastic poly pellets | Cold only | Air dry, or the lowest heat setting | Most sensitive to heat; high heat can deform pellets |
| Organic fill (rice, beans, grains) | Do not soak | Spot clean and air out | Water can swell or spoil the fill; follow the maker exactly |
| Removable cover (no fill) | Per its own tag | Per its own tag | Washing the cover handles most routine cleaning |
If you don’t know which fill you have and can’t find out, treat it like plastic pellets: cold water, no high heat.
How to wash a weighted blanket in a machine
When the label says machine washable and your washer has room, here is how to wash a weighted blanket in the machine.
1. Pre-treat stains. Dab spots with a little mild detergent and water before washing. 2. Load it evenly. Spread the blanket around the drum rather than dropping it in one lump. An uneven load is what makes a washer bang and walk. 3. Use a gentle or delicate cycle. Less agitation means less strain on the stitched pockets that hold the fill. 4. Choose cold water, never hot. Cold is the safe default for every fill; use warm only if the label says so. 5. Use a mild detergent and skip bleach and fabric softener. Bleach weakens fabric and softener can coat it. 6. Check the pockets afterward. Look for split seams or leaking beads before it goes anywhere near a dryer.
Wash it alone. Adding towels or sheets to a load that’s already heavy only makes the balance worse.
Hand washing and spot cleaning
For small messes, spot cleaning is enough. Blot the spill, work in a little mild soap or detergent with a cloth, rinse the area with a cloth dampened in clean water, and let it air dry. Don’t soak the spot; you want the stain out, not water deep in the fill.
For a full hand wash, use a clean bathtub, which is the method Gravity recommends for its inserts. Fill it with cold water and a small amount of mild detergent, lay the blanket in, and knead it gently so the water moves through. Drain, refill with clean water, and press again to rinse. Repeat until no suds appear.
Be warned: a soaked weighted blanket is awkward and very heavy to lift out of a tub. Press out as much water as you can while it’s still in the tub, then let it drain before you try to move it.
Drying without damaging the fill
Drying is where a lot of weighted blankets get damaged.
Air drying is the safest option for any fill, and Gravity calls it the best way to dry a weighted blanket. Lay it flat on a clean surface or drape it evenly over a sturdy rack or line so the weight is spread out, and shake it out every so often so the fill dries and settles evenly. Don’t pin it up by one edge; the weight pulls the fill down and strains the seams.
If the label allows a dryer, use low heat and take it out as soon as it’s dry. For plastic pellets, stay on the lowest setting or skip the dryer.
In the Mesa heat a blanket laid flat on a shaded patio dries quickly, but keep it out of harsh direct sun, especially if it has plastic pellets inside.
How often to wash it
There’s no single schedule that fits every blanket, so use common sense. Wash a removable cover about as often as you’d wash a duvet cover, and more often if it’s used every night or shared with a pet.
The insert needs a full wash far less often: when it’s visibly dirty, smells, or has had a spill that got through the cover. Every full wash strains the stitched pockets, so spot cleaning and airing it out in between is kinder to the blanket.
A quick note on choosing the weight
People who search for how to wash a weighted blanket often ask about weight, so here’s the general guidance. This is not medical advice.
Harvard Health notes that companies selling weighted blankets typically recommend one that weighs approximately 10% of your body weight — a 15-pound blanket for a 150-pound person. Cleveland Clinic similarly suggests looking for one that’s no more than 10% of your body weight.
Harvard Health also advises people with sleep apnea, other sleep disorders, respiratory problems or other chronic medical conditions to check with a doctor first, and suggests parents talk to a doctor or trained therapist before trying one with a child. If you have specific health needs, check with your doctor and the manufacturer.
When to call a professional
Some weighted blankets are simply too heavy for a home washer, and some have care labels that rule out home washing altogether.
Bulky bedding is something we handle at Bartoli: comforters and pillows are part of our specialty cleaning. Weighted blankets vary a lot in weight, fill and construction, though, so please call us before bringing one in. We’ll ask what the label says and let you know honestly whether we can take your specific blanket.
If you’re washing the rest of the bed at the same time, our guides on cleaning a comforter at home and washing pillows by fill type cover those.
The bottom line
The short answer to how to wash a weighted blanket: read the label, respect the weight, wash the cover when there is one, keep the water cold, and dry it low or flat. Most damage comes from overloading a small washer or blasting the fill with high heat.
If yours is too heavy for home, call us at (480) 969-9982 and we’ll talk it through. Our store is at 1911 E Brown Rd in Mesa, there’s a 24-hour drop-off box outside, and we run pickup and delivery across the East Valley on Wednesdays and Fridays — scheduled by phone.
Bipin Kanabar — Owner, Bartoli Cleaners & Laundry, serving Mesa since 1957.
Frequently asked questions
Can I wash a weighted blanket in a washing machine?
Yes, you can wash many weighted blankets in a washing machine, as long as the care label allows it and the blanket’s weight fits your washer’s capacity. Use a gentle cycle, cold water and a mild detergent, and spread the blanket evenly around the drum. If it has a removable cover, washing just the cover is often all you need.
How do you clean a 20 lb weighted blanket?
You clean a 20 lb weighted blanket by washing its removable cover and spot cleaning the insert, because the insert is heavy for many home washers once it’s wet. If the insert needs a full wash and the label allows machine washing, use a machine rated for that load, such as a large commercial washer, on a gentle cold cycle; otherwise hand wash it in a bathtub. Then air dry it.
Can you wash a 15 lb weighted blanket at home?
Yes, you can often wash a 15 lb weighted blanket at home, provided the care label allows machine washing and your washer’s manual rates it for the load. Remember it will weigh much more when wet. Wash it alone on a gentle cold cycle, spread it evenly in the drum, and dry it on low heat or flat. When in doubt, wash only the cover.
Can a 130 lb person use a 20 lb weighted blanket?
A 20 lb weighted blanket is heavier than common guidance suggests for a 130 lb person. The usual rule of thumb, cited by Harvard Health and Cleveland Clinic, is about 10% of body weight, which points to roughly 13 lb. A 20 lb blanket is about 15%. This is general guidance, not medical advice; check with your doctor and the blanket’s manufacturer for your specific needs.
Can you put a weighted blanket in the dryer?
You can put some weighted blankets in the dryer, but only if the care label allows it, and only on low heat. Take it out as soon as it’s dry. Blankets filled with plastic pellets are more heat-sensitive, so use the lowest setting or air dry them. Air drying flat, shaking it out now and then, is the safest option for every fill.
