Garbage Disposal Installation Guide

Garbage disposal is required for keeping your sink from clogging and get rid of the wasted food safely from the house. Garbage disposal is one of the essential things in the kitchen that will last for a minimum of 12 years. Installing a garbage disposal in a single drain sink or double sink requires some wiring and plumbing work. If you are confident to do it yourself, then it can be done with minimum tools. Follow the below process and know how to install a Garbage Disposal steps by step.

How to install a Garbage Disposal Image

How to install a Garbage Disposal for the First Time?

Is it hard to install a garbage disposal tank? You can install it with a little effort and neatly follow the simple steps that we recommend for installing a new garbage disposal.

Step 1: Choose the best garbage disposal tank for your family: 

We get both continuous and batch garbage disposal tanks in the shop. If your family has kids, it is advised to go for a batch tank. If your family is large and requires a continuous operation, choose a continuous tank. Similarly, if you are comfortable with little noise, then low-cost, effective tanks can be used. 

Step 2: Installation of Garbage disposal requires the following tools and materials:

  1. Pliers
  2. Screwdrivers.
  3. Hammer
  4. Garbage disposal unit
  5. Plumber’s putty
  6. Extension pipes 
  7. Separate electric socket and electric cord.

Step 3: Turn off the power and detach the hoses connecting the sink and the pipeline. Remove the disposal flange assembly from the sink and install the new one from the disposal unit. 

Step 4: To install the new flange, you should use a plumber’s putty. Along with the flange, you will get a mounting ring. Make sure to sandwich them on the top and bottom of the sink opening and seal them.

Step 5: To the tailpiece of the sink flange, place the triangular attachment and fibrous gasket and slide them. Secure the rings with a round clip spring into the groove.

Step 6: You need to tighten three mounting screws with even pressure to assemble the mount. Make sure to tighten perfectly so that no leakage is present at the opening. If any putty oozes out, remove it carefully.

Step 7: Now that the mounting assemblies fixed well, you need to concentrate on the power line. Fix the power cord in the socket, and if there is a dishwasher drain water pipe, fix the pipe in the dishwasher inlet at the disposable chamber. 

Step 8: Since everything fixed, now it’s time to fix the garbage disposal unit. Align the top end of the disposal unit with the mounting ears. Keep the disposer in place and rotate the mounting ears on the bottom of the drain and adjust it properly while tightening it. Make sure that everything is in place before tightening it to the maximum.

Step 9: You can connect the disposer to the drain lines and dishwasher line and secure it with the clamps. Now tighten the sink mounting assembly with a screwdriver until you hear the click sound.

Step 10: A general check-up for the drain pipes for leakage is necessary; it can be done with running tap water. If there are leaks, then tighten the assembly until there are no leaks.

Now that you have installed the disposer, do a test run, and finally, your mission accomplished. Hope you got to know how to install a garbage disposal with dishwasher.

Safety Measures

  • Use a dust mask and gloves to protect your eyes and hands.
  • Turn off the electric line before installing the unit.

Do I need a plumber to install a garbage disposal?

If you have a basic knowledge you can go with the garbage disposal installation. Once check the above and decide whether you can do it or not. If it seems risky to you, better call the plumber who are qualified. You may also need to call electrician if a GFCI outlet is needed for your disposal.


Installing a garbage disposal can be performed with little stress as a DIY. The garbage disposal unit will last for a minimum of 12 years. You require a dedicated socket under the sink for connecting with the disposal, and the switch controls the outlet. With proper wiring, this can be used. Similarly, for large families, ½ HP motors may be required for continuous operation, and small families 1/3 HP is sufficient. Consider these while installing a disposer at your home.

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