Wash the jacket separately from all other pieces of clothing.
How to wash jackets in washing machine. Youll need to invest in a few items and will have to regularly clean it and take care of it. The following diagram is attached for your reference with commonly used wash symbols. Then turn the jacket inside out.
When its time to dry use a very low heat setting on your dryer and throw in three clean tennis balls to help break up wet clumps of down. This will wash and spin the jacket with slower motions lessening the risk of damage to the down filling. If its available select the extra rinse option.
Turn jacket inside out. The only problem with this is that they float so they dont want to stay down in the water in the washing machine. It doesnt rinse out very well and can make parts of the lining stick together inside the coat.
Go to your washing machine preferably a front-loading machine though I have used a top-down machine before with no issue but the agitator of a top down can potential ruin the down feathers and put your jacket into the washing machine on gentle to normal wash setting with cold water. Separate your clothes according to fabric and color and wash light and dark colors separately to avoid color crosstalk. Run the Gentle Cycle.
Machine-wash your down jacket on a gentle cycle at 30 degrees C. The standard washing machine is designed to load up to 5 kg of cotton up to 2 kg of synthetic and up to 1 kg of wool. Run a Second Rinse Cycle.
Image from Amazon Step 3. If your coat has any inner faux fur lining in it remove it if at all possible. Remember never to place any other garments with your waterproof jacket.