Garbage Disposal Installation Guide

Wondering how to install a garbage disposal unit? Then you’re in luck, because we’ll be going through the entire process in detail below.

From gathering your tools to testing your handiwork, you’ll learn everything you need to know about how to remove your old unit and how to secure a new one – all in a few clear steps.

Gathering Your Toolkit

Every successful DIY project begins with the right tools and materials. Let’s compile a list of what you’ll need to install your garbage disposal smoothly.

Essential Tools Required

You’ll need a few tools including screwdrivers, adjustable pliers, and a pipe wrench. They will allow you to disconnect the old unit and install the new one. Also, keep a hammer handy – you never know when it might come in handy.

Materials Checklist

Aside from the disposal unit, it’s a good idea to have a bucket on hand. That way, you’ll have somewhere for the waste water and debris to go, just in case.

Safety First

Safety is not something you want to compromise on. First things first, disconnect the power supply to the garbage disposal before starting. And be sure to familiarize yourself with the safety instructions provided with your disposal model.

Removing the Old Disposal Unit

The old unit must first come out before you can install the new disposal. Here’s how to go about it:

Disconnecting the Old Unit

First, switch off the circuit breaker or unplug the unit. Using a pair of slip-joint pliers or an adjustable wrench, loosen the compression fitting that holds the sink drain pipe to the disposal and remove the pipe. Be prepared to catch any drainage or debris. You may need to remove the electrical cover plate to access the electrical cable connector.

Afterward, detach the disposal from the sink mount by loosening the mounting ring. You should now be able to unscrew the disposal unit.

Cleaning the Sink Opening

Next, you want to prepare the area for the new unit. We recommend using a putty knife or a similar tool to remove any residual plumber’s putty or sealant from the drain opening. Make sure the surface is smooth and free of debris

Preparing for the New Garbage Disposal Installation

With the old unit removed and the sink surface cleaned, it’s time to install the new disposal unit.

Setting Up the Mounting Ring

The sink flange assembly includes the fiber gasket, backup flange, and mounting ring. You’ll also need a rubber seal or metal flange between the sink and the disposal unit to ensure a proper seal. Depending on the model, you can use an EZ mount or a 3-bolt mount to secure the disposal to the sink.

Attaching the New Sink Flange

To install a sink flange, follow these steps:

1. Roll a half-inch rope of plumber’s putty and place it around the drain opening
2. Press the sink flange onto the putty and apply weight on top to secure it in place.
3. Secure the flange using a mounting ring and gaskets, tightening the mounting screws gradually

Installing the New Garbage Disposal

The next steps involve securing the mounting assembly, connecting the electrical wires, and aligning the disposal with the mounting tabs.

Securing the Mounting Assembly

Using three mounting screws, secure the mounting assembly. Attach the lower mounting ring to the sink mounting assembly by sliding it over the sink flange, which should already be in place with the backup ring and snap ring secured. Tighten the screws alternately until the mounting assembly is secured against the sink.

Electrical Connections

The next step is to connect the electrical wires. Before mounting the new garbage disposal, make sure to:

1. Attach a power cord if it does not come pre-installed. That will ensure that the unit is ready for use once installed
2. Wire the power cord to the disposal by matching and connecting the colored wires
3. Secure the wires using wire nuts

Aligning the Disposal with the Mounting Tabs

Finally, secure the garbage disposal unit to the sink and align it properly. Rotate the unit until the mounting tabs are correctly positioned for locking. Once it’s securely locked, it’s time to connect the dishwasher drain.

Connecting the Dishwasher Drain (Optional)

If your dishwasher’s drain water is meant to run through your disposal unit, you’ll need to connect the dishwasher drain hose as well. Here’s what you need to do:

Removing the Knockout Plug

To connect the disposal to the dishwasher, the knockout plug must first be removed. We recommend using a screwdriver and hammer (or a rubber mallet) to dislodge and remove the plug from the disposal unit.

Attaching the Dishwasher Drain Pipe

Ensure the drain hose has no kinks – that will allow it to maintain proper flow and prevent blockages. Next, secure the hose to the garbage disposal using a hose clamp.

Finalizing the Installation

Connecting the Drain Pipes

Adjust the discharge tube as needed by cutting it to the correct length before connecting it to the sink’s drainpipe. Using a combination of slip nuts and washers, attach the drain pipes, ensuring there’s a secure connection.

Testing the Garbage Disposal

Fill the sink with water and check for leaks. It’s a good idea to wrap paper towels around the top of the disposal, drain discharge elbow, and dishwasher connector – that will allow you to easily identify water leaks when the sink is filled.

Once you’re sure there are no leaks, follow these steps:

1. Plug the disposal unit into the electrical outlet
2. Turn on the power
3. Run the garbage disposal with the water on
4. Check for proper functionality and any leaks while the unit is rtunning

Maintenance Tips for Your New Garbage Disposal

Regular maintenance will not only prevent unpleasant odors but will also prolong the lifespan of your unit.

Regular Cleaning

Keeping your disposal clean is easier than you might think.

We highly recommend using ACTIVE Garbage Disposal Cleaner tablets once or twice a month to prevent odors and grime buildup. Simply place one tablet into the disposal while the water is running and turn on the garbage disposal for one minute. From there, all you need to do is rinse the sink.

Alternatively, you can use baking soda and vinegar to clean the inside of the disposal.

Be Careful What You Put Down the Drain

Just because it’s a garbage disposal doesn’t mean it can handle everything. Hard objects like bones, popcorn kernels, and fruit pits can cause jams and potential malfunction. The same goes for fibrous food scraps, fats, oils, and non-food substances like paint.

Knowing How to Install a Garbage Disposal

With that, you’re armed with all the knowledge you need to remove and install a garbage disposal. Remember, safety always comes first – so remember to unplug the unit before starting.

As long as you have the necessary tools, you should be able to complete the task. And you can always refer back to this guide if you need help.

Key Takeaways

• Installing a garbage disposal requires specific tools and safety procedures
• Before installing a new unit, you must prep the sink opening, set up a mounting ring, and new sink mounting flange with plumber’s putty
• To install the new unit, you have to secure the mounting assembly, connect the electrical wires, and properly align the unit

How to Install Garbage Disposal – FAQs

What tools do you need to install garbage disposals?

You will need a basic toolkit including a hammer, screwdrivers, a putty knife, safety glasses, as well as bucket. Additional tools like a pipe wrench and wire nuts will also be necessary for setting up plumbing and electrical outlets.

How do I safely remove my old garbage disposal unit?

To remove your old garbage disposal, first disconnect the power supply. You can then remove the unit using an adjustable crescent wrench and screwdriver.

How do I maintain my replacement garbage disposal?

We recommend cleaning your garbage disposal with ACTIVE Garbage Disposal Cleaner Tablets once to twice a month. Also, pay attention to what goes down the drain. Avoid putting hard objects (e.g. bones, fruit pits) and fibrous food scraps down the drain as they can cause damage to the unit.