Most garbage disposal manufacturers provide a range of models to choose from with ever-increasing power ratings. If you do a ton of cooking and use your disposal frequently, then spending a little extra on a 3/4 or 1 horsepower disposal will absolutely be worth the money. Not only do the more powerful units shred through food scraps much easier, but they can also handle harder objects such as bones or meat scraps that might jam a smaller, weaker disposal. As mentioned before, powerful disposals are less noisy and they tend to have only occasional damages. However, one downside of having larger, more powerful disposal is that they will require more space. No matter what your habits, likes, and dislikes are, it’s always best to consult with a John Moore tech before buying a new disposal to make sure it will fit under your sink and perform how you need it to.
No need to worry if your garbage disposal is on the fritz—installing a new one is a straightforward project that you can do yourself in just a few minutes. Start by switching off the power to the disposal at your home’s breaker box to ensure that you can work safely. Next, remove the old unit by detaching it from the mounting ring directly beneath the sink drain. Finally, install any necessary new mounting hardware, fit the new disposal into place, and turn on the water to test for leaks before giving it a trial run.

Did exactly what I expected to. We bought a house with an older disposal and the gasket/rubber that blocks things from falling down into the disposal was cut away. I replaced and is like new. It makes the disposal sound much better too. A couple things about removing disposal and installing gasket...1) use a large Allen key (short end) to stick in the eyelet to unlock the disposal. 2) the gasket fits over the mouth of the disposal and locks into place. Don't just stick the new gasket in up from the bottom hole like I did. 3) use channel locks to tighten the last bit of the disposal/sink collar by pinching the eyelet and collar screw mount. Enjoy!
However, if your garbage disposal is fairly new, having the reset button repaired is a better choice, especially if your unit is still under warranty. If your unit is under warranty, the company will probably send out a repair man to fix the job. On the other hand, if your unit isn’t under warranty, it’s best to have a skilled technician complete the job unless you have experience doing this.
Some jams you can free and get the motor to spin and sound like it is working, but the blades are stuck in one position and can’t spin freely to do their job properly. This is very common problem – the motor works so we think everything is working. Not the case! This can lead to stoppages, food trapped in the disposal and a bad smell. These blades can’t be repaired. The disposal needs to be replaced.
Throw some ice down once in a while. While ice will not sharpen the shredders (as is commonly believed) it does knock off any debris buildup on the sharp edges that keeps them from grinding food properly. For better results, make special ice cubes from pure lemon juice or vinegar, or alternate with biodegradable cleanser (label them in your freezer!) Cover and seal ice trays used in your freezer for cleanser, and do not reuse trays for food or drink after having been used for cleanser. While using the disposal, be sure to run cold water at the same time.
Your old discharge tube probably won’t be the right length for your new disposal. If it’s too long, simply connect it to the disposal, mark it and cut it with a hacksaw for your garbage disposal installation. (Loosen the other pipe connections, if necessary, to insert the tube back into the tee.) If the old discharge tube is too short, you may have to make a time-wasting trip to the store. To avoid this, make sure the new garbage disposal installation kit includes a tube, or buy one separately at the same time for about $3.
At one point, I did have a leak that I eventually determined was due to improper installation. (This was by the same "professional" plumber who reversed the hot and cold supply lines when installing a kitchen faucet. He just didn't connect the drain hose properly.) While investigating the issue, I called Waste King to inquire about possible in-home service or warranty replacement. I was blown away by their level of customer service: no waiting on hold, just an immediate connection to a person who really knew the product and was unexpectedly diligent in resolving my problem -- which, as it turns out, wasn't even their fault.

An affordable option that offers outstanding value, the Waste King Legend Series comes backed by a solid five-year warranty. The stainless steel disposal is compact enough to install under most sinks. The continuous feed design means this disposal requires just a flip of a switch. It runs very quietly, but it is still powerful enough to grind food waste efficiently.
If your garbage disposal is making a clicking or rattling sound, there may be some food particles that will not grind up inside. Remove power from disposer, reach into the sink hole with a pair of tongs and remove anything that is still down in the disposer. Test your disposer to be sure the noise is gone. If not continue troubleshooting your disposer issue (see below).

Garbage Disposal Replacement