How Far Can A Dishwasher Pump? (Dishwasher Drain Height)

Curious about the limits of your dishwasher’s pump and drain loop height?

A high loop is connected to prevent the water from draining back into the dishwasher. Uncover the secrets of the high loop and the drain height of the dishwasher. Discover how far it can effectively pump.

Directly the dishwasher can pump water up to 6 to 10 feet. Get the detailed answer you’re seeking right here.

Explore our comprehensive guide for more insights and details.

Do Dishwashers Pump Water Out?

A dishwasher drain hose is connected to the pump below the sink, connecting to the garbage disposal or the sink drain. The hosepipe forms a high loop higher than the sink pump level and then down towards the sink drain. Connect the drain hose to the air-gap cylinder mounted on the sink deck or countertop.

A high loop is essential in preventing the drained water from draining back into the dishwasher. How high the drain hose goes depends on the type of dishwasher you are using and the length of the hose. You will also use the manufacturer’s specification to determine the height required to drain your dishwasher.

You can also use the government’s guidelines on plumbing.

Can a Dishwasher Drain Upwards?

A dishwasher drain system by pumping the drained water upwards. An air gap should also be installed at the countertop or sink deck. The air gap creates a gap in the drained water in a way that drained water cannot find its way back to the dishwasher. 

You might have noticed a high loop between the dishwasher and the sink connectors. The hose goes up from the dishwasher drain outlet, forms a loop slightly higher than the sink connection, and moves back towards the sink. 

Once the drained water is pumped up to the other side of the loop, it cannot return to the dishwasher unless the sink drains are clogged. 

After connecting the drain hose to the dishwasher, your dishwasher also needs a P-Trap. A P-Trap protects harmful gases from the sewerage system by finding a way back to the dishwasher. It also prevents dirty water from returning to the dishwasher once drained. 

All these connections to the drain hose should be made using clamps. 

How High Can a Dishwasher Pump Water?

How high the dishwasher pump drains water depends on the type. You can get powerful dishwashers that pump water up high.

However, regular dishwashers pump water 7-8 feet up. Once you increase the length, the pump struggles to make water return to the dishwasher or clog the pipe. 

Depending on the height your dishwasher is pumping, you will need a check valve to improve the efficiency.

How Far Up Can a Washer Pump Water?

Depending on the washer you are using, the manufacturers provide a manual explaining how far your washer can pump water. 

However, most washing machines come with a drain pipe of 99 cm. This means that the provided length is the effective length. 

The installation will affect the length too. You might need an extension if the space you want to install is further from the sewerage system. In that case, you can get a standpipe of about 18″. Adding a hose too long enables drained water to sip back into the washer. 

The volume of the water the washer drains also affects the distance you can install the washer. Water might slip back into the washer if the volume is too low. 

You should also test and find out how far your washers drain effectively. You can use a pipe cutter to reduce the size of the drain hose till you achieve the right length. 

Alternatively, you can consult your plumber if you are not knowledgeable about washers.

How Far Can a Dishwasher Drain Pump?

Again, it depends on where you want to place your dishwasher.

Most dishwashers come with a 6-inch 6-foot drain pipe. However, setting the dishwasher away from the kitchen sink can add the hose pipe to 10 feet.

If you increase the length, your pump will not pump water as expected. 

You must install a check valve if you use a long drain hose, say 18 feet. Otherwise, the drain hose will destroy your floor. 

How High Should a Dishwasher Drain Hose Be?

Most dishwashers come with an attached hose pipe. In most cases, the drain hose is about 8 feet.

Once connected to a sink drain, the height of the high loop formed by the drain hose should be above where the drain is connected to the dishwasher. 

How to Pump Washing Machine Water Up?

A washing machine pumps the drain water up to the sewerage. The washing machine drain hose is connected to a pump that does the job automatically. 

There are instances where the pump cannot fulfil its purpose. Suppose your only space is in the basement, with the sewerage line above the ground. In this case, you must use a standpipe that is mostly 18″ or buy a longer drain hose and connectors.

You can also use check valves to prevent water from returning to the washing machine. An external pump o motor can also work best if installed correctly. This step and all the named devices will allow you to drain the washer.

  • Unplug your washing machine from the power source. 
  • Locate the water supply lines and the drain hose. They are installed permanently at the back of the washer. The supply pipes come in red for hot water, blue for cold water and grey for draining.
  • Shut off the water supply by turning off the blue and red knobs on the red and blue pipes. 
  • Disconnect the drain line from the sewer line and move the dishwasher away from the wall. 
  • Clean and dry the side that was connected to the drainage system. Use a connector to add the standpipe to the drain hose. 
  • Ensure you have placed the check valve in a perfect position.
  • At the pump under the sink, you can add a more robust motor to increase water pumping and connect the drain hose to the sewerage system again.
  • Turn back the water supply on, Push the washer back to the wall, plug back the electric code and test the washer. 

Add a more powerful pedestal if it does not pump the water up.


Your dishwasher or washing machine’s brand will determine the drain hose’s length. You can connect the dishwasher far from the sink, but you will new other devices to aid the process.

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