Do You Need To Elevate A Washing Machine Drain Hose?

When installing a new washing machine, one of the most common questions asked is does the drain hose need to be elevated? The short answer is yes, the drain hose on a washing machine does need to be elevated. This is to prevent water from flowing back into the machine. 

The drain hose is typically connected to the back of the washer at one end and runs into a drain or sewer pipe close by.

If you’re replacing an existing washing machine, you probably already have all of the relevant drainage pipes etc in place. There will either be a standpipe which sticks out from the floor and is usually around 600mm high.

Or, if the washer is in the kitchen,  the drain hose is connected under the sink to the sink waste pipe.

Connecting A Washing Machine To A Standpipe

open washing machine door

When placing the drain hose from your washer into the standpipe it’s important to remember not to push it in too far. The drain hose shouldn’t be pushed into the standpipe more than around 12.7 to 15cm. This allows there to be an air gap which prevents water from travelling up the pipe and causing a flood.

There should have been a curved clip supplied with the drain hose which can be fixed to the wall and support the drain hose at the correct height. Which should be between 40 to 100 cm from the floor.

Connecting A Washing Machine To The Sink Drain

If your home doesn’t have a standpipe, you will need to connect the washer to the sink drain. This can be slightly technical and is best left to a plumber.

It’s an easy task for a plumber and probably won’t cost too much. Although on some modern sinks, there is a spigot connector on the drain pipe which can easily be connected to the washing machine drain hose.

While you’re waiting for the plumber to come, it is possible to hook the drain hose over the sink. However, this isn’t very satisfactory as it often leads to water splashing all over the kitchen floor.

What To Do If The Drain Hose Isn’t Long Enough?

Many modern washing machines are supplied with a drain hose that is not long enough to reach the standpipe or under sink drain pipe. If this is the case, you will need to either buy a longer drain hose or extend it using a drain hose extension kit.

FOROREH Drain Hose Extension Kit,1.5m Length Universal Drain Hose extended hose water pipe For Washing Machines Dishwashers
  • 【Extended drain:】 used to connect the connected drain hose to the drain pipe. Connection of all kinds of water outlet pipes, extended length. Thickened plastic hose, thick pipe, easier drainage!
  • 【Product dimension:】 brand new PP; length: 1.5m; joint specification: inner diameter 20mm, outer diameter 26mm, pipe diameter 24mm; color: gray

There are many universal extension kits available online, but you’ll be better off buying the correct extension kit for the make of machine you own.

However, it’s worth pointing out that virtually all washing machine manufacturers will have a clause in their t&cs that states that adding an extension to the drain hose will void your warranty.

This is because they will not guarantee any parts that they never supplied with your appliance.

Fitting an extension is relatively simple and just involves inserting the connector and tightening the clamp. Then running the other end of the hose into the standpipe or connecting it to the under sink drain pipe.

The overall length of the drain hose should not exceed 3 metres which should include the original drain hose as well as the extension.

Do You Need To Contact A Plumber To Install A Washing Machine?

person looking at washing machine

If you are replacing an existing washing machine, and all of the pipework fits, there’s really no need to get a plumber to do it for you. However, if you are installing a washer into a new area or somewhere that has never housed a washing machine before, we recommend getting a plumber to do it for you.

It’s important that the plumbing is carried out correctly to prevent damage to your machine as well as your home.

SEE ALSO: Is It Safe To Extend The Washing Machine Drain Hose?

Frequently Asked Questions

Why does a washing machine drain hose need to be elevated?

The drain hose on a washing machine needs to be elevated to prevent water from flowing back into the machine or flooding the floor.

How high should a washing machine waste pipe be in the UK?

The washing machine waste pipe should be connected to a standpipe at a height of between 40 to 100 cm for it to work correctly.

Can you connect the washing machine drain hose under the sink?

You can connect the washing machine drain hose under the sink. Most modern sinks have a spigot on the waste pipe that a washing machine drain hose can be connected to. We recommend getting a plumber to install this for you in the interest of safety.

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