That little white washing machine hook on the front of your machine is a stick-on magnetic door holder, and its only job is to keep the door cracked open a bit between loads. That’s it. No secret function, no missing part you lost in the move.
Here’s the thing most people skip over, though. Depending on the washer, the door holder may be a factory-installed component or an add-on accessory somebody added later. And the reason it exists, the actually useful part, has nothing to do with the hook itself and everything to do with airflow and moisture inside the drum.
What That Washing Machine Hook Actually Is
If you look closely, it’s usually a small flexible holder with a magnet on it. One magnetic pad sticks to the edge of the door or the frame beside it. The little hook or strap then catches the door and keeps it from swinging shut.
So the door rests open just a touch instead of sealing closed. That’s the whole mechanism.
It’s also sold as a cheap optional accessory, the kind of thing you stick on yourself in about ten seconds. No tools, no wiring, no model-specific fitting. But some washers come with a door holder already installed from the factory. Whether it’s built-in or added later, its job is simply to keep the door slightly open. People sometimes assume every washer has one and get confused when their new washer doesn’t. Not every model comes with this feature.
It’s the same general idea as those plastic hooks you stick inside kitchen cupboards, a tiny feature solving an everyday annoyance.
Why People Prop the Washer Door Open
This is the part worth caring about. When you finish a load and shut the door, you’re sealing a damp drum. The water that didn’t fully drain, the leftover moisture on the rubber, all of it gets trapped in a dark closed space. That’s exactly where musty smells and mildew like to set up.
Leaving the door ajar lets air move through the drum so it can dry out. Dry drum, no trapped damp, far less of that sour laundry smell.
This matters most on front-loaders. They have that thick rubber door gasket, and it loves to hold little puddles of water in its folds. Shut the door on that and you’ve basically made a tiny humid cave.
I’ll admit I learned this the boring way. For years I’d slam the washer door closed the second a load finished, pure habit, same motion as shutting a cabinet. Then I’d open it the next morning and get that flat, musty breath of air hit me in the face. Once I started just leaving it open, that smell more or less went away. The hook, if you have one, just makes that habit automatic.
How to Position the Door Holder Correctly
Stick it on wrong and it won’t hold, so a little setup helps.
- Clean and dry the spot first. The magnetic pad needs a clean, dry surface to grip. Grease or dust and it’ll slide off.
- Place the magnet so the door rests open just an inch or two. You want airflow, not the door flung wide into the room.
- Check the swing. If the open door sticks out into a walkway, reposition so it stays tucked against the machine.
While you’re at it, deal with the two other damp spots. Wipe the rubber gasket dry after the last load, getting into the folds where water hides. And pull the detergent drawer open a crack too, since it stays wet and stuffy just like the drum does.
A Few Practical Cautions
A couple of honest notes before you go buy one.
First, adding a separate door holder is completely optional. You get the exact same benefit by leaving the door ajar with your hand. The hook is convenience, not magic. If your washer doesn’t already have one and you’d rather not add another gadget, just don’t close the door all the way. Same result.
Second, and this one’s real: keep that little magnetic piece away from kids. Small parts are a choking risk, and strong magnets are genuinely dangerous if swallowed. If a toddler could reach it, think twice about where it lives.
And don’t let a propped door turn into a shin-high obstacle in a narrow laundry room. A door blocking the walk gets kicked, and then your nice magnet is on the floor.
Worth the Few Dollars?
The hook just makes a free habit easier to keep. Buy one or skip it, the real fix costs nothing. Open the drum and let it breathe. After the last load of the day, wipe the rubber gasket dry with a cloth and leave the door cracked a couple inches overnight.
