FAQ: How long can a dishwasher drain hose be?

Does a dishwasher drain hose need a loop?

“A high loop is required on the dishwasher drain in the installation instructions for all of your dishwashers. GE: “If an air gap is not required, the drain hose must have the high loop from the floor to prevent backflow of water into the dishwasher or water siphoning out during operation.”

Can you shorten dishwasher drain hose?

It’s a pumped drain, you can put a full circle loops in it if there is not a good way to just shorten the hose. As long the hose is not kinked it will work fine.

How do you lengthen a dishwasher hose?

How Do You Lengthen A Dishwasher Drain Hose?

  1. Step 1: Measure Your Drain Pipe. If you haven’t done this already, measure the outer diameter of the drain pipe.
  2. Step 2: Turn Off the Power.
  3. Step 3: Locate the Hose and Loosen It.
  4. Step 4: Attach the Coupling.
  5. Step 5: Reconnecting and Restoring Power.

How should dishwasher drain hose be installed?

Drain Connection Using High Loop to Garbage Disposal

  1. Prepare the Drain Hose. Pull as much of the drain hose as possible from behind the dishwasher.
  2. Loop the Drain Hose. Pull the dishwasher drain hose up and strap it in place as high up as possible under the sink.
  3. Connect the Hose.

Why does a dishwasher drain need an air gap?

Air gaps are the most effective means of preventing your drain from cross-contaminating your dishwasher with waste. If you want to protect your dishwasher from flooding with contaminated water, you need an air gap. Dishwasher air gaps are also required by plumbing codes in many locations.

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Where does dishwasher drain hose go?

Air gap to drain – After mounting the air gap device to the sink or countertop, you’ll attach the dishwasher drain hose to the small side of air gap. You may need to trim the hose, and be sure to use a hose clamp. You’ll need another piece of hose to connect the larger end of the air gap into the sink drain.

How does dishwasher drain?

Clogged Drain Hose

Your dishwasher drains through a hose that can be connected to your kitchen sink drain or garbage disposal. The drain hose can get an interior build-up of sludge that causes backups and clogs.

Are all dishwasher drain hoses the same size?

Most dishwasher drain hoses are 1/2 inch in size. To allow for different types of connections at the end of the hose, dishwasher drain hoses are fitted with a special rubber boot. This allows them to connect to 1/2-inch, 3/4-inch and 1-inch connections.

How do you fix a dishwasher drain hose?


  1. Shut off electrical power and water supply to the dishwasher.
  2. Remove the bottom front access panel and toe panel.
  3. Pull out the dishwasher.
  4. Disconnect the drain hose from the drain pump.
  5. Remove the drain hose from the water inlet assembly.
  6. Disconnect the drain hose from the drain line to the sink.

What is a dishwasher drain loop?

The purpose of a dishwasher high drain loop is to prevent back flow of water. The water can flow back into the dishwasher which will leave water in the bottom of the dishwasher. The high drain loop is also there to prevent improper drainage of water while the dishwasher is running.

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