How to Install a Garbage Disposal ?

Take time to consider the major factors when purchasing a disposal unit. 

Are you more concerned with convenience or safety? 

If you don’t have young children around and you want convenience then you should choose a continuous feed system.  This is because you will be able to clean your kitchen or food waste very easily while doing other work around the kitchen.  Now, of course, there is a danger to using a continuous feed system, as the name suggests when you turn the power on the unit will run continuously, so anything that falls into the unit will be attacked by the unit.  So you have to be careful around it and make sure no foreign objects that you don’t intend on mulching fall into it and you have to obviously watch your fingers.  If you’re worried for a moment about staying safe or having little people around that might get hurt, then go with a batch-feed which is a less convenient system that has the safety feature of only running in batches.

Looking for the disposal power

Consider the power of the disposal that you’re going to buy.  Make sure that you get disposal that is powerful enough to mulch up the food waste you intend on putting into it.  Make sure that the noise profile of the machine isn’t going to be too loud for your tastes and consider what kind of plumbing you have.  If you have a septic system, be sure to make sure that your disposal is compatible with it.


Once you’ve made your purchase you should gather up the equipment and supplies you will need for a do-it-yourself installation.  You’re going to need to make sure that you have goggles and a dust mask while you work; Safety First!   You’ll need water pump pliers, plumber’s putty, electrical cord, a hacksaw, a garbage disposal wrench, and screwdrivers.

The most important is the safety

Again safety is tremendously important when dealing with a unit meant for causing destruction, so make sure that the power is off before continuing and cover the power panel to make sure nobody else can turn the unit on while you’re working on it.


If your unit is attached to your dishwasher, then you’re going to want to detach it.  Use a screwdriver to remove the hose that is attached to the dishwasher from your disposal unit.  Next, you’ll want to remove the trap waste line that is going from the disposal unit by using your wrench to unscrew the nut which connects the disposal and the trap.  Make sure that you utilize something to catch any waste that remains inside the unit because when you remove these two parts you’re going to drip waste, so have a bucket or some other catcher.

Remove the disposal from the mounting structure.  Use your screwdriver to loosen and remove the old disposal.  Now disassemble the rest of the mounting structure by removing the ring on the sink sleeve, the flange, and the fiber gasket as well as the old plumber’s putty.

Once the old disposal and assembly is away, you can install your new unit.  You’re going to want to wire up your unit properly, follow the expert websites detailed instructions like  Now you’ll want to prepare the new mounting structure by installing the drain flange and mounting ring.  Prepare some Plumber’s Putty by rolling it between your hands to form a snake that is about 10 inches long and about half an inch thick.  Run it around the underside of the drain flange under the sink.  Insert the flange into the drain and apply enough even pressure to attach it properly.  After this, you will simply pop on the mounting ring, fiber gasket, and backup rings just as you had them with the previous model.  You’re essentially just redoing everything that existed before, but fresh parts for your new model.


Sometimes it can help when doing installs such as these to take good notes of the removal process for the old unit, that way you can replicate, but in reverse for any new units.  This is important for a lot of plumbing work.


Now mount the disposal and attach the trap again, making sure all parts are secure.  Make sure that you pay attention to the manufacturer’s instructions as you go.  If you have a dishwasher and dishwasher attachment make sure to reattach it and now you can test your disposal.  Make sure that you give your new disposal a thorough test to ensure that there is no leaking at all and that you’ve sealed everything properly. For more DIY improvement click here.


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