Washer Backs Up Into Sink

If your washing machine is backing up into your sink, there are a few possible causes. The most common cause is a clog in the drain line. This can be caused by a buildup of hair, lint, soap scum, or other debris. Another possible cause is a problem with the washer's drain pump. The drain pump is responsible for pumping the water out of the washer and into the drain line. If the drain pump is not working properly, the water will not be able to drain out of the washer and will back up into the sink.

To determine if the drain line is clogged, you can try to unplug the washer and then pour a bucket of water down the drain. If the water does not drain out, then the drain line is likely clogged. To clear a clog in the drain line, you can use a drain snake or a chemical drain cleaner. If you are using a chemical drain cleaner, be sure to follow the directions on the package carefully.

If the drain line is not clogged, then the problem may be with the washer's drain pump. To test the drain pump, you can unplug the washer and then remove the drain hose from the back of the washer. Place the end of the drain hose in a bucket and then plug the washer back in. If the drain pump is working properly, the water will pump out of the washer and into the bucket.

If the drain pump is not working properly, you will need to replace it. Replacing a drain pump is a relatively simple repair that can be done by most do-it-yourselfers. You can find replacement drain pumps at most hardware stores or online.

Here are some additional tips to help prevent your washer from backing up into your sink:

Clean the lint trap after every load of laundry.
Run a hot water cycle with a cup of white vinegar once a month to help dissolve soap scum and other buildup.
Avoid overloading the washer.
Do not put large items, such as blankets or comforters, in the washer.

If you have tried all of the above and your washer is still backing up into your sink, you may need to call a qualified appliance repair technician.