how to wash weighted blankets

Weighted blankets are popular, but they're also the laundry item people are most afraid to wash at home. They're heavy, bulky, and carry a real risk of damaging your washing machine or the blanket itself if you get it wrong. This guide covers exactly how to wash your weighted blanket safely — whether it's 12 pounds or 25.

Quick Answer: How to Wash Weighted Blankets

• Check weight: If the blanket is more than half your washer's capacity rating, use a commercial laundromat machine.
• Machine settings: Cold or warm water, gentle cycle.
• Detergent: Mild, liquid detergent. No bleach. No fabric softener.
• Drying: Low heat or air dry. Add dryer balls to prevent clumping. Dry completely before storing.
• Check the label: Always. Some weighted blankets are dry-clean only or have shell fabrics with special requirements.

Step 1: Check the Care Label

Before anything else, look at the care label. Most weighted blankets with glass bead or plastic pellet fill are machine washable. However:

• Some use steel shot beads or natural materials (sand, gravel, rice) that aren't water-safe
• Covers made of minky, chenille, or velvet may have specific temperature requirements
• Some brands (like BlanQuil or Baloo) recommend dry cleaning or spot cleaning only

If the label says dry clean only, follow that instruction. Machine washing a dry-clean-only weighted blanket can ruin the fill distribution.

Step 2: Check Your Washer's Capacity

This is the most important step people skip. Overloading your washing machine with a weighted blanket can damage the machine's drum bearings and suspension — a repair that costs more than the blanket.

General Rule

Your washer should be able to handle a weighted blanket that weighs no more than half its capacity rating. A blanket weighs more wet than dry — this is the critical factor.

• Small washer (3.5–4.5 cu ft): Wash blankets up to 12 pounds
• Medium washer (4.5–5.0 cu ft): Wash blankets up to 15–18 pounds
• Large washer (5.0+ cu ft): Can handle blankets up to 20 pounds

If you're unsure of your washer's capacity, look up your model number on the manufacturer's website. Most household machines are in the 4.5–5.2 cu ft range.

When to Use the Laundromat

For weighted blankets over 20 pounds, or if your home washer is undersized for your blanket, use a commercial laundromat machine. Commercial front-loaders are typically 8–20 cu ft and handle large blankets easily without stress on the machine.

The cost is usually $3–5 for a large machine plus drying time. Well worth it to protect both the blanket and your home washer.

Step 3: Wash the Blanket

1. Wash alone or with just a few lightweight items. Don't cram other laundry in with a weighted blanket — it needs room to move and agitate properly.
2. Select cold or warm water. Cold is safest and preferred. Warm is acceptable for cotton blankets. Never hot — heat can damage the fill material and cause shrinkage in the shell fabric.
3. Use gentle or delicate cycle. Less agitation means less stress on the stitching between pockets (which holds the weight fill in place).
4. Use a mild liquid detergent, half the normal amount. Weighted blankets don't need aggressive cleaning — mild detergent is plenty. Using too much leads to residue buildup between the pockets. Avoid detergents with bleach or fabric softeners.
5. Skip the extra spin cycles. The standard spin is fine. Extra spin puts unnecessary stress on the stitching.

Step 4: Dry the Blanket

Drying is the step that takes the most time. Weighted blankets dry slowly because the fill material traps moisture. Incomplete drying leads to mold and mildew inside the blanket — which is both a health problem and almost impossible to fully remove once it takes hold.

Machine Drying

1. Use low heat setting. High heat can damage plastic pellet fill and shrink certain fabrics.
2. Add 3–4 wool dryer balls to the drum. These help separate the blanket as it tumbles, promoting even drying and preventing the fill from clumping to one side.
3. Check every 30–45 minutes. Remove the blanket and manually redistribute the fill by shaking and fluffing the blanket.
4. Run multiple drying cycles if needed. A weighted blanket often needs 2–3 full dryer cycles (60–90 minutes each) to dry completely through to the center.
5. Test for dryness: squeeze the center of the blanket hard. If it feels cool or damp, it needs more drying time. Only put away when the blanket is completely dry throughout.

Air Drying

Air drying works but takes a long time (12–24 hours or more). If air drying:

• Lay flat on a clean surface rather than hanging — hanging concentrates all the weight on the stitching and can damage fill pocket seams
• Flip every few hours to expose both sides to airflow
• Make sure there's good airflow — a fan helps significantly
• Never put away until completely dry inside

How Often Should You Wash a Weighted Blanket?

Every 1–2 months for regular use. If you use the blanket every night, washing more frequently keeps it fresh. If you have a duvet cover or blanket cover on it, you can wash the cover weekly and the blanket itself less often (every 3–4 months).

Using a removable cover is the best long-term strategy for weighted blankets — it reduces direct washing of the heavy inner blanket, extends its life, and makes routine maintenance much easier. Most weighted blanket brands sell compatible covers separately.

What Type of Fill Does Your Blanket Have?

Glass Beads

The most common fill in quality weighted blankets. Glass beads are water-safe, machine washable, and maintain their weight distribution well after washing. Most washable weighted blankets use glass beads.

Plastic Poly Pellets

Also water-safe and machine washable. Can soften or deform under very high heat — use low or medium heat when drying.

Natural Fill (Rice, Millet, Barley)

Not machine washable. Rice and grain fills will swell, rot, and mold when wet. Spot clean only, or check with the manufacturer for care instructions.

Steel Beads

Can rust. Check manufacturer instructions before washing — some steel-filled blankets are water-safe, others are not.

Frequently Asked Questions

Can you wash a weighted blanket in a top-load washer?

Top-loaders with a center agitator can be harsh on heavy blankets — the agitator can stress the fill pocket seams. If you have a top-loader with an agitator, use a laundromat's front-loader for blankets over 15 pounds. HE top-loaders without an agitator are gentler and handle weighted blankets better.

What happens if a weighted blanket isn't fully dry?

Mold grows inside the fill pockets. This produces a musty smell that won't fully wash out, and mold exposure from sleeping with a moldy blanket is a genuine health concern. Take the extra time to ensure full dryness — squeeze multiple spots in the center to test.

How do you get stains out of a weighted blanket?

Spot-treat before washing: apply a small amount of mild detergent or stain remover directly to the stain, work it in gently, and let it sit for 10–15 minutes before machine washing. For large stains, soaking the stained area in cold water first helps. Avoid rubbing stains aggressively — it can damage the shell fabric.

Why does my weighted blanket feel lumpy after washing?

Fill clumping during drying is the cause. The fill beads cluster together when the blanket isn't moved during drying. Fix it by: removing the blanket partway through drying and manually distributing the fill by shaking and redistributing from the outside; and adding dryer balls to keep it moving in the drum. Prevent it by checking and redistributing every 30–45 minutes during drying.