Blocked Washing Machine Drain Hot! 90%

A washing machine pump discharges at approximately 15–20 liters per minute. A partially blocked standpipe can handle 10 L/min. The result is backflow: water rises up the standpipe, overflows the top (flooding your laundry room), or simply stays in the drum because the pump cannot overcome the static head pressure of the backed-up column of water.

By code, a washing machine standpipe (typically 1.5 to 2 inches in diameter) has a P-trap holding water to prevent sewer gas entry. This trap is a magnet for: blocked washing machine drain

After frantically unplugging the machine and soaking up the overflow with every towel he owned, Elias turned to the internet. He watched a video titled "Easy Drain Fix!" Armed with a plunger and false confidence, he went to work. A washing machine pump discharges at approximately 15–20