Dishwasher Drain Hose Connector Too Big – What To Do?

You might have just noticed that the dishwasher drain hose connector is too big, yet you are not sure what to do about it. Well, you don't have to worry! We've researched the answers for you.
If the dishwasher drain hose is too big, the water can leak around the area. The first thing you'll want to do is to replace it with the correct size. See below the steps:
  1. Refer to the dishwashing unit's description to see the drain hose size. Otherwise, measure it manually with a flexible tape measure.
  2. Unplug the dishwashing unit from the power source and shut off the water supply.
  3. Place a bucket under the hose to prepare for draining the wastewater.
  4. Disconnect the hose from the sink by unclipping it and loosening the clamp.
  5. Pour the remaining wastewater into the bucket.
  6. On the dishwashing unit, detach the bottom access panel by unscrewing it.
  7. Remove the brackets at the underside of the counter, then pull the dishwasher out.
  8. Find the other end of the drain hose, then use a wrench or screwdriver to detach it.
  9. Wipe the dishwasher's drain with a dry cloth to absorb the remaining water.
  10. Put in the new drain hose connector of the correct size. You need to clamp or screw it both onto the dishwashing unit and into the sink, depending on the product installation guide.
  11. Put the dishwashing unit back on the mounting bracket.

In this article, we will learn ways to deal with a dishwasher drain convector that is too big. We'll discuss its importance, as well as other relevant matters we should be aware of. So, be ready for a lot of information in this article. Let's keep reading!

Build-in dishwasher with opened door in a white kitchen. - Dishwasher Drain Hose Connector Too Big - What To Do?

Dishwasher Drain Hose Connector Too Big - What To Do?

A dishwasher drain hose is usually included in a package when you purchase the dishwashing unit, depending on the manufacturer. The drain hose may not match the sink's drainpipes simply because not all sinks have the same structure.

You'll want to replace the dishwasher drain hose with the proper size that will fit in the unit. The size of the drain hose is most likely indicated on the product label. If you can't find it, you can simply measure it with a flexible measuring tape. Doing so will help you determine the size of the new drain hose for replacement.

Drain pipe or tube consist of y shape of pvc plastic pipe fitting and plastic corrugated flexible hose. To connect water drainage system with sink, basin, washing machine and dishwasher in home.

What Size Should the Dishwasher Drain Hose Be?

Most dishwasher drain hoses are an inch wide and at least 10 feet long. Such a measurement is enough to maintain water pressure at a normal rate. However, the size can differ by manufacturer. You can also ask them if they customize the drain hose to get the right size for your situation.

See this dishwasher drain hose on Amazon.

How High Should the Kitchen Sink Be?

Consider at least 36 inches height for the kitchen sink. This is to reach the sink with ease and to retain the proper wastewater flow. Too high a sink can result in increased water pressure. While too low a sink can cause an ineffective draining mechanism.

Also, the sink's depth ranges around 6-10 inches or deeper. This is good for placing the dishes for manual washing and completing other kitchen tasks.

How to Fix Dishwasher Drain Hose Leaking

Metal clamp for connection of dishwasher drain hose under kitchen sink close up.

The drain hose can leak even with regular use. It can be due to cracks or water pressure from frequent draining. Check the steps below on how to deal with a leaking drain hose:

  1. Using a flashlight, find the leak under the sink.
  2. Drain some water from the faucet to locate the leak easily.
  3. Apply a sealant to the damage depending on the product's instructions of use.
  4. Let the sealant dry.
  5. Avoid using the dishwasher for at least a day to ensure the efficiency of the sealant.
  6. If the drain hose continues to leak, you might opt to replace it.

How to Clean the Dishwasher Drain Hose

Young Woman Cleaning And Fixing Dishwasher In Kitchen

It's crucial to clean the dishwasher drain hose every time you use it or at least every few days. Doing so can prevent serious issues such as clogging. The cleaning procedure may differ depending on the unit and product guide. However, see below for the general steps:

  1. Turn the dishwasher on, then pour some water and soap into it. Ensure that the unit is empty.
  2. Allow the dishwater to run for a few minutes to eliminate the dirt inside.
  3. Drain the dishwasher and pour more water to remove the soap.
  4. Now, detach the drain hose from the unit.
  5. Place the end of the hose into a bucket to drain the remaining water.
  6. Run the faucet to push away the dirt inside the hose.
  7. Pour a declogging solution into the faucet, then drain it. You should empty the bucket from time to time.
  8. Use a long brush to scrub the hose inside. Be careful not to tear the hose.
  9. Then drain more water and soap until the hose becomes clean.
  10. Wipe the hose's end with a dry cloth before you reattach it to the dishwasher.

In case there's something that's clogged the drain hose, you can pull it out with a declogging tool. Simply insert the tool inside the hose, then clip and dispose of the clog.

Get Dr.Pen clog remover tool at Amazon.

What Is an Air Gap in Dishwasher?

An air gap is a space between the clean water source and the faucet. It helps prevent the contaminated water from flowing back into the main supply, keeping the water in the faucet safe and clean.

See this air gap on Amazon.

See below for the steps on how to install an air gap:

  1. Check if the sink has a hole for the air gap. Otherwise, mark a hole of about 1 3/8 inches on the countertop near the sink's rim.
  2. Put tape around the drilling spot and on the drain to prevent the dust from clogging the sink.
  3. Drill the hole carefully.
  4. Connect the drain hole into the air gap.
  5. Secure the dishwasher drain hose in place by locking it with a stainless clamp.
  6. Now, connect the other side of the air gap into the main drain or garbage disposal.
  7. At least 7/8 inches of tube, then connect it with the dishwasher drain or to the garbage disposal.
  8. Attach the air gap to the hole.
  9. Keep the air gap in place by installing the nuts.
  10. Then run the dishwasher in fill mode. Ensure that there will be no water escaping from the garbage disposal.

For a better understanding, see below the illustration of an air gap:

What Is a High Loop for a Dishwasher?

The high loop is the part of the dishwasher drain that curves high before it connects to the sink. It acts as a trap, allowing waste to drain but preventing it from flowing back. Otherwise, placing the dishwasher drain without a high loop can clog the sink.

See the steps below on how to install a high loop:

  1. After you replace the dishwasher drain hose, hold it near the end that connects to the sink.
  2. Lift the drain hose up from the ground to at least 32 inches high or wherever there is the highest point under the sink.
  3. Mark the wall or the underside of the sink for the drilling spot.
  4. Wrap a zip tie around the hose.
  5. Insert the zip tie in the hole you drilled, then lock the hose in place.

See below the image of a high loop:

Why Does the Dishwasher Have Electrical Shock?

Aged repairman fixing dishwasher in the kitchen, using screwdriver while his young colleague in uniform helping him, holding flashlight. Repair service concept. Selective focus. Horizontal shot

Considering that a dishwasher uses electricity, it's possible to cause an electric shock during use. You should act right away, as this can get worse when ignored. See below for some possible reasons and how to deal with them.

Loose or Damaged Wire

There might be loose wires on the unit, causing the electric current to spread all over the components. Simply turn off the dishwasher and look for faulty wires. Consider tightening the wires at their terminals or into the outlet.

You can try to wrap an electrical tape on damaged wires as a temporary solution. However, you might need to call a technician to fix the issue. You'll want to stop using the unit until it's fixed.

Water Overflow

The water might overflow due to the pressure or frequent movements of the dishwasher. The water may cause an electrical shock if you don't dry the unit every time after use. Try mopping the floor or using a cloth to wipe the dishwasher's interior.


It's such another useful article, isn't it? We learned what to do when the dishwasher drain hose is too big for the sink's drainage. We detailed the replacement steps and even discussed other related matters. Remembee to clean the dishwasher every after use.

Do you want to learn more about dishwashers? Let's read together here:

Dishwasher Drain Hose Keeps Kinking – Why And What To Do?

Where To Drill Hole For Dishwasher Drain Hose?

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