Installing a Drainpipe for a Washer & Dryer

Drainage is an important aspect in every homeowner’s life, and proper drainage is equal to a proper home. Maintaining drainage in your laundry room is as critical as in other rooms around the house. Washing machines can use 19 gallons of water per load, according to Prudentreviews. Therefore, it goes without saying how essential it is to have your washer’s drainage system working perfectly all through.

During the spin and rinse cycles of washing your clothes, water drains from the washer basket. It is taken out through the drain hose and down the washer’s drain pipe which is connected to the plumbing system. However, since they are subject to water, drainpipes sometimes get damaged and therefore need to be replaced. 

Here are some easy steps that you can follow to get the job done. 

Before Installation

The drainpipe that you install for your washer and dryer unit will only service the washer. The dryer doesn’t connect to the plumbing because it doesn’t use water. It needs a vent, which is as important as the drainpipe.

The washer drain is part of the plumbing system, and when installing it, there are plumbing codes to be mindful of. However, the rules that govern the installation of the dryer vent are contained in the International Residential Code and have been implemented primarily to prevent fires.

Things You Will Need

  • Measuring Tape
  • PVC Y-fitting
  • Reciprocating Saw
  • Utility Knife
  • PVC Glue
  • PVC Drain Pipe
  • Pipe Straps and screws
  • Hammer
  • 1 90-degree elbow

Mark the Suitable Drain Line

Start by measuring the size of the y-fitting using a measuring tape, and then mark its length on the existing drain line at the back of the washer. Try to be as precise as possible in your measuring. You don’t want to cut a larger section on the drain line that will be bigger than your y-fitting. 

Cut the Drain Line

Before cutting, wear safety glasses and cut the marked section of the drain line using a reciprocating saw. Beware of some water that may spill out while you’re cutting. Try to cut the drain line as perpendicular as possible to get a proper fit for the y-fitting. You can now remove the cut section. Then using your utility knife, remove any sharp edges left on the multiple cutting edges.

Clean the Cut

After cutting the drain line, use a clean rag to clean the edges where you will install the y-fitting. Ensure that the edges are not wet and that there’s no water running through the pipe, otherwise, the y-fitting will not stick properly with the drain line and water may start to leak.

Installing the Y-Fitting

Now that the edges are dry, coat them with the PVC glue and apply the glue on the inside edge of the y-fitting. Then attach the y-fitting into the cutting edge and hold it firmly for a couple of minutes. Make sure that the third opening of the y-fitting is alongside the drain line, facing at the same level. 

Installing the 90 Degree Elbow

Clean the remaining opening of they-fitting with a clean rag and then apply the PVC glue on the inside of the opening. Apply also the glue on the outside of the elbow and then insert it in the y-fitting. Position the elbow with the remaining opening facing downwards facing the floor. Then hold it for a couple of minutes until the glue dries completely.

Install the PVC Drainpipe

It’s now time to install the long PVC drain pipe. This pipe should be attached to the remaining opening of the elbow while standing vertically by the wall. Just as you fixed the y-fitting and the elbow, cover the edge of the pipe and the opening of the elbow with the PVC glue and then join them together. As you do this, the pipe should be standing vertically at 90 degrees with the horizontal drain line.

If the pipe is too long, you can trim it to the required height using the reciprocating saw. Note that the top of the pipe should be higher than the washing machine’s water level so it should be roughly about 34 to 36 inches atop the floor. If the pipe is too short, it will not function properly, and the water from the washer will not drain down the pipe.

Strap The Pipe

Use the pipe straps and the screws to attach the pipe to the wall by inserting the pipe in the straps and then fastening them into the wall using a hammer. Take great care not to hammer them too tight to the wall otherwise, the PVC pipe will get damaged. Use about five pipe straps to attach it, leaving between them a distance of about 5 inches.

Connect to The Washing Machine

The drainpipe is now ready and you can connect it to the washing machine’s hose pipe. If the pipe is inside the machine, open the control panel to remove it. To open the control panel, unplug its connectors and slide the cabinet towards you. After removing the hose, release the clamp that secures it to the pump and attach the drainpipe. Then fasten it again to the pump using the clamp. 

Find and Connect to a Drain

Now that you have everything set, it is time to find somewhere to direct the water. Locate a drain to which you can connect the washer drain pipe. Suitable candidates are a sink nearby, tub, shower or toilet drain. You may have to remove some wall covering to gain access to the drain. 

 Check Your Work

At this point, your washing machine drain pipe installation is ready and complete. You should have a drain pipe vertically connected to the main drain line at a 90-degree angle using an elbow. The top of the pipe should also be attached to the washing machine’s drain hose.

Also, check all joints and ensure that there are no air gaps between pipes by running some water through the pipe. According to the BBC, just under 3 billion litres of water is lost to minor leaks every day across the UK so the water should run without a single water dropping.

If you find a small fault immediately, it will be much easier to repair it at this point rather than later. Additionally, if you find it hard to do the installation, you can contact us and we will send you a team of experts to your aid.

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