Once you’ve selected the right washing machine outlet box for your situation, it should be installed at a height where the flood level rim (or the top of the drainage outlet) is 32” to 34” above the finished floor.
What is the maximum height for a washing machine drain?
Washing machine manuals typically specify a minimum height of 39” for the entry of the drain hose into the standpipe or faucet box, and a maximum height of 96” (8 feet).
Does a washing machine drain hose need to be elevated?
Yes, the drain hose needs to be elevated and it’s always best to do so at a level that’s higher than the washing machine itself. This will prevent possible siphoning. There are also other steps you can take to ensure that you get the best drainage.
Does a washer drain need a trap?
The lack of a P-trap exposes the area to sewer fumes and the lack of venting will cause the drain to run sluggishly and overflow. Washers, like all fixtures, need a trap.
Does a washer drain need a vent?
All plumbing fixtures—including washing machines—must be vented. Improperly vented drains can be sluggish and noisy, and can emit hazardous fumes. Properly vented drains allow the P-trap to do its job: prevent sewer gases from escaping into your home.
What is code for washing machine drain?
According to the Universal Plumbing Code, the standard for washing machine drain size is 2 inches. The P-trap should be between 6 and 18 inches high from the floor, while the pipe should be between 18 and 30 inches high from the floor. These standpipes connect to the home sewage system and should also be vented.
Can a washer and toilet share the same drain?
Some buildings have multiple waste lines that are connected to different appliances. However, if you’ve already taken note of the fact that your toilet gurgles whenever the washer drains, they’re definitely using the same system. That means that they also share the same vent stack.
Can a washing machine drain into 1 1 2 pipe?
Drain and Trap Requirements
A 2-inch drain pipe is required for all washing machines. The former requirement of 1 1/2-inch pipe is not enough to handle the fast drainage of modern washers.
How far down should a washer drain hose go?
It is best if your drain hose is 28” high from the ground. For a top load washing machine, 5” of the hose will go inside the drain pipe. And for front load machines, the length should be 7”.
Why does a washing machine need a standpipe?
The standpipe assembly keeps the water level of the washer tub below that of the drain, preventing siphoning from the drain or sewer line back into the washer. When backflow does occur, siphoning can cause water to flow back into the washing machine from the drain, or out of the drain onto the floor.
