How to Wash a Down Coat Without Ruining It

The first rule is not a technique. It is that you should do this rarely.

Down does not need frequent washing and every wash costs it a little. Spot-clean cuffs and collar, air the coat rather than laundering it, and wash the whole garment only when it is genuinely dirty or when the loft has gone flat with body oils. Once a season is plenty for most people; many coats go longer.

When it is time, the method matters more than the effort.

Do not use your normal detergent

This is the single most common way a good coat is destroyed, and it does not look like damage at first.

Down is a natural fibre with its own oils, and those oils are what let each cluster spring back to full loft. Ordinary laundry detergent is designed to strip oils. Use it and the down comes out clean, brittle, and permanently less able to loft. The coat does not tear or stain. It just stops being warm, and no amount of drying brings it back.

Use a down-specific wash, or failing that a very mild liquid detergent with no softeners, bleach or brighteners.

The wash

Use a front-loading machine, or a top-loader with no central agitator. An agitator will beat the baffles and tear internal seams. If you only have an agitator machine, use a laundrette.

Cold water, gentle or delicate cycle. Around 30°C. Zip everything up and fasten the closures so hardware cannot catch.

Run an extra rinse. Detergent trapped inside the baffles is what leaves down stiff and clumped. One rinse rarely clears it. This step is easy to skip and you will feel the difference if you do.

Lift it out, do not pull. A wet down coat is heavy and all of that weight hangs from the internal baffles. Support it from underneath when you move it to the dryer.

The dry is the actual skill

This is where most people give up too early, and it is the step that determines whether the coat comes back.

Low heat, and expect one to three hours. High heat will melt synthetic shell fabrics. There is no shortcut here; the coat is not dry when it looks dry, because the down inside the baffles holds moisture long after the shell is dry to the touch.

Put clean tennis balls or dryer balls in with it. As they tumble they break up the clumps of wet down and drive air back into the clusters. Without them the down dries in lumps and stays that way.

Take it out every 20 to 30 minutes. Shake it, then pat the baffles firmly with a flat hand to feel for compacted clusters and break them apart. This is the part that does the work.

Only stop when there are no cool, dense patches left. Squeeze along the baffles. Anywhere that feels heavy or cold is still wet.

If the loft never comes back

A coat that comes out of this flat and lumpy has almost always simply not finished drying. Damp down clumps and stays clumped.

The fix is usually to run it through the dryer again on low with the balls, working the baffles by hand between cycles. If that does not do it, wash it again and dry it properly the second time — the likeliest cause is detergent residue, which the extra rinse exists to prevent.

Storage matters as much as washing

Down is damaged more by being compressed than by being worn.

Store the coat on a wide hanger with air around it, not crushed between other garments and not in a vacuum bag for the summer. The clusters need room to stay open. A coat stored compressed for six months comes out of storage measurably flatter, and unlike a bad wash that one is reversible: hang it, let it recover, and tumble it briefly on low with the balls before wearing.

---

Sources

• How to Wash a Down Jacket — REI Expert Advice
• How to Wash Your Down Jacket — Rab
• Washing a down jacket: as seldom as possible — Jack Wolfskin