Can you wash a king-size comforter at home?

Only if your washer has large capacity (4.5+ cubic feet). Otherwise, use a commercial machine at a laundromat.

Can you wash a down comforter?

Yes, on gentle cold with down-specific or very mild detergent. Dry on low with tennis balls for hours until completely dry.

It's not fully dry. Damp fill breeds mildew quickly. Run it through the dryer again with tennis balls until bone dry.

Some manufacturers recommend it for down. But many down comforters wash fine at home with proper care. Check your label.

Bedroom

We spend a third of our lives in bed. A clean comforter means better sleep and fewer allergens. Here's how to clean yours.

1
Check the care label
Most cotton and polyester comforters are machine washable. Silk, wool, and dry-clean-only comforters need professional cleaning.
2
Pre-treat stains
Spot-treat any stains with a dab of Power Wash detergent. Work it in and let it sit for 15 minutes.
3
Wash on gentle with cold water
Use a large-capacity front-loader on gentle/delicate with cold water. Use half the normal detergent amount.
4
Dry with tennis balls
Tumble dry on low heat with 3-4 tennis balls to prevent clumping. This takes 2-3 full dryer cycles.

TIPThe tennis balls in the dryer are essential. They break up fill clumps and ensure even drying throughout.
TIPIf your home washer is too small, use a laundromat's commercial front-loader.
TIPUse a duvet cover to reduce washing frequency. Wash the cover weekly, the comforter every 1-2 months.

XUsing too much detergent, which doesn't rinse out of thick fill and causes skin irritation and stiffness.
XNot drying completely, which causes mold inside the fill where you can't see or smell it for weeks.
XUsing a top-loader with a center agitator, which can tear the comforter's baffles.

Every 1-2 months. Use a duvet cover and wash the cover weekly to extend time between washes.