Step-by-Step Guide to Garbage Disposal Installation

February 7, 2025

TL;DR: This article summarizes the installation of a garbage disposal which involves several key steps:


  1. Safety First: Turn off the power supply to the disposal unit and wear appropriate protective gear.
  2. Apply Plumber's Putty: Roll plumber's putty into a snake shape and place it under the sink flange to create a seal.
  3. Attach the Flange: Insert the flange into the sink hole, pressing down to secure the seal.
  4. Mount the Disposal: Connect the mounting ring with screws and attach the disposal unit to the assembly.
  5. Connect to the Drain: Link the disposal outlet to the drain pipe and test for leaks by running water.
  6. Wiring: Connect the necessary electrical wires securely and restore power.


While this overview provides basic guidance, professional installation is recommended to ensure safety and proper functionality. For expert assistance, contact Willowbrook Plumbing & Heating.

Installing a new garbage disposal system isn't as daunting a task as it appears. This blog aims to provide a simple, step-by-step guide to get you through the process smoothly. Our team at Willowbrook Plumbing & Heating has compiled this guide to ease you into the installation process. Still, we always advise hiring professional help to avoid major hassles or damage.


Hence, here's what you'll need to do for a garbage disposal installation. But remember, for a seamless and professional installation, Contact today Willowbrook Plumbing & Heating.       


Understanding Your New Garbage Disposal System


Before you start, it’s crucial to know and understand the parts of your new garbage disposal system. The inlet port, discharge tube, flange and mounting assembly are all essential parts that need to be installed correctly for everything to work as intended.


Think Safety


Before you start, remember to put safety first. This includes turning off the power to the circuit that will supply electricity to the disposal unit. It also includes wearing gloves and safety glasses as you handle the different components.


The Installation Process


Here is a basic overview of the installation process. Please note that the actual steps required may vary based on the specific model of garbage disposal you are installing.


1. Applying Plumber's Putty: Roll a handful of plumber’s putty into a snake shape and apply it to the underside of the flange.


2. Attaching the Flange: Place the flange (the top part of the mounting assembly) into the sink hole and press it down until the putty form a seal.


3. Mounting the Disposal: Attach the mounting ring with the screws and snap the disposal onto the mounting assembly.


4. Connecting to the Drain: Now, connect the disposal outlet with the drain pipe and ensure the newly installed disposal doesn’t leak by running some water.


5. Wiring: Finally attach the necessary wires, make sure everything is secure and turn on the power.


The Need for Professional Installation


While this guide gives you a basic idea of the process, it's important to remember that garbage disposal installation can be a complex task. You have to deal with electrical wiring and plumbing work, and if done incorrectly, it could lead to accidents, leaks, or breakdowns.


So why take a risk when you have professionals just a call away? Contact Willowbrook Plumbing & Heating today, where our courteous, qualified and experienced technicians are ready to provide you with expert garbage disposal installation services. We ensure safe, clean and efficient work that respects your home and satisfies your needs.

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