You should also install a vent if your washing machine is more than 4 feet from the vent stack as this will make sure there s ample room for the washing machine to drain properly.
Washing machine water air vent.
Feel for water around the hoses where they connect to the washer.
Correct venting prevents suction if you put the vent line at the connection point of the washing machine branch arm like you see in my drawing the vacuum pulls the needed air from the vent pipe before it tries to get it on the other side of the trap.
It s looking for the path of least resistance to get the needed air.
The newer washing machines may use more water and exhaust it faster than the existing washing machine drain pipe was designed for a 1 1 2 to 2 inch pipe installed where a 2 1 2 inch pipe is now needed.
The placement of the water inlet hoses is above the air vent on the rear of the washing machine.
If the drain of your washing machine fits tightly into the drain you definitely need a washing machine drain vent.
Increase the size of the washing machine drain pipe particularly if the washing machine is fairly new and the drain pipe is fairly old.
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It pulls air from the vent into the front of the basket and a fan in circulates it to dry the load.
It allows air in which prevents the possibility of a vacuum forming that could affect the water draining from your washing machine.
The vent will usually rise straight out of the sanitary tee that the p trap is connected to.
Our washer also offers a combination wash and dry feature that cleans and dries loads under two pounds in one cycle without applying heat.
The vent may also serve as a vent to nearby fixtures.
Before troubleshooting an air vent leak you need to confirm that the water is not actually dripping or running down from the hoses.