How to position washing machine drain hose?
Hello. I built my kitchen cabinet with 860mm height. And my washing machine has a height of 844mm. The water outlet will pump water out of the washing machine. The plan is to plumb it under the sink, so that it will pump water directly into the pipe under the sink. However, pipe hole is quite high at 650mm above ground. Hence, the water might converge inside the pipe, or even move into the washing machine hence malfunctioning it.
Any solution to this?
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Washing machine drain hose height and siphoning concern
- The problem
- A washing machine measuring 844mm high was being fitted under an 860mm cabinet, with the drain intended to connect under the sink. The concern was that the waste connection at about 650mm above floor level might cause water to run back into the machine or affect draining.
- Likely cause
- The accepted reply indicates incorrect drain-hose/waste-pipe height or routing can cause either water running back into the washing machine or siphoning, where the machine continually loses water down the drain.
- What fixed it
- The accepted advice was to plumb the drain hose in the correct installation position and height to avoid backflow or siphoning. Exact measurements or a specific repair were not given in the discussion.
- Checks to try
- Waste pipe connection height was stated as approximately 650mm above the ground
- Risk considered: water running back into the washing machine
- Risk considered: siphoning causing the machine to lose water down the drain
1 Answer
If the pipe is too high you can get water running back into the washing machine, or if it's too low it can trigger siphoning where the washing machine constantly loses water down the drain. These articles talk about the correct way to plumb a washing machine's drain hose in -
Washing machine constantly fills with water and goes down the drain
What do I need to watch out for after repairing or installing a washing machine?
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