The correct height for your washing machine connection prevents backflow, unnecessary pump loading, and leaks. As a rule of thumb, the drain should be 60 to 100 cm above the floor. Position the faucet so that it's easily accessible and connect the hose correctly. This guide provides practical guidelines that work in most situations, plus what to look for depending on the brand. Ergonomics also matter: a good working height prevents unnecessary bending and back pain. Read more in Ergonomic working height and preventing back pain .
Ideal height of the drain
For most washing machines, a drain height between 60 and 100 cm above the floor works best. Lower than 60 cm increases the risk of backflow, which can stop your cycle. Higher than 100 cm demands more from the pump and can cause malfunctions or incomplete drainage. If your washing machine is on a plinth or in a washing machine cabinet, allow the drain height to increase accordingly. Want to raise the appliance? See Washing machine cabinets to raise your connection . Preferably, use a 40 mm diameter standpipe or a trap with a special washing machine connection. Keep the top edge of the drain at the correct height, not the bottom, and ensure the drain pipe can ventilate freely.
Follow your brand's manual
Always check the installation requirements in the manual. Some manufacturers specify a slightly narrower range or specific requirements for the hose guide. Follow those values if they differ. Note the nameplate and keep the installation manual for service. If you're deviating from standards or have specific situations, see Custom laundry room: determining the correct height .
Connect the drain hose correctly
Use the included hose holder and clamp the hose securely to the standpipe or siphon. Route the hose as straight as possible, without kinks or sharp bends. Insert the hose 10 to 15 cm into the drain pipe and do not make the connection airtight, so that ventilation remains and the siphon can function properly. If you have a standpipe, position the U-bracket at the correct height and secure it with a strap. If you are connecting to a siphon, use the ribbed nipple with sealing ring intended for washing machines.
Avoid extensions if they're not necessary. If you must extend them, use an extension with a coupling and double hose clamps, and test for leaks. Level the machine, double-check the hose routing, and run a test cycle to check for leaks and proper drainage. If the drain is shared with a dryer condensate drain, use a Y-piece with a check valve to prevent backflow. For step-by-step instructions, see the Installation and Connection Manuals .
Tap and supply hose: accessibility and height
Ideally, place the water tap next to the washing machine, not directly behind it. This allows you to easily turn off the tap when away or for maintenance. In practice, the tap is often positioned slightly above the top of the machine, usually around 1.0 to 1.2 m from the floor. Lower is acceptable, as long as the hose can run smoothly and the tap remains easily accessible. Install a non-return valve or washing machine tap with a backflow preventer and use the supplied rubber ring in the hose nut to prevent dripping. After opening the tap, check for leaks at the tap and the machine inlet. For a well-thought-out layout and guidelines, see "Laundry Room Design: Optimal Connection and Working Height ."
Aquastop or regular hose
A standard supply hose generally has no specific height requirements, as long as there are no kinks. An aqua-stop hose has a safety valve on the tap side and is heavier and stiffer. Ensure there is sufficient space next to the machine for the valve to hang straight and that the tap remains easily accessible for closing and testing. Some brands require the aqua-stop to be installed vertically and for the hose to be flushed before first use. Check the manual for any special requirements or testing procedures.
Frequently Asked Questions
What is the minimum and maximum height for the washing machine drain?
A guideline is 60 to 100 cm above the floor. Lower heights increase the risk of backflow, while higher heights can overload the pump. If your machine is elevated, raise the drain accordingly.
How deep should the drain hose insert into the pipe?
Insert the hose 10 to 15 cm into the standpipe. Secure it with a clamp or strap, and don't make the connection airtight, so the drain can vent and prevent siphoning.
My drain is lower than 60 cm. What now?
Install a higher standpipe or have the drain moved to 60 to 100 cm. Temporary solutions such as additional loops in the hose are unreliable and can cause malfunctions or leaks. If you can't adjust the pipe, consider stacking solutions for additional height so that the effective drain height falls within the guideline.
Can I connect the washing machine to the sink siphon?
Yes, provided you use a siphon with a washing machine connection and the net connection height is within 60 to 100 cm. Always use the correct nipple with a sealing ring and avoid kinks in the hose.
