Last week, my garbage disposal decided to give up the ghost mid-dinner prep. The smell was…unpleasant, to say the least. That’s when I learned firsthand just how to change my garbage disposal. This guide will walk you through the entire process, from disconnecting the old unit to installing a new one, ensuring you avoid the same messy situation. You’ll learn everything needed to tackle this plumbing project confidently, saving money on expensive plumber fees.
Key Takeaways
- Master the steps involved in replacing a garbage disposal.
- Understand the different types of garbage disposals available.
- Learn how to safely disconnect and reconnect plumbing and electrical components.
- Gain confidence in tackling home plumbing projects.
- Discover troubleshooting tips for common garbage disposal issues.
Planning Your Garbage Disposal Replacement
This section focuses on the pre-installation phase. We’ll cover choosing the right replacement, gathering necessary tools, and ensuring you have a safe workspace. Proper planning minimizes potential problems and makes the entire process smoother.
Choosing the Right Garbage Disposal
The market offers various garbage disposals. Consider factors such as horsepower (HP), grind chamber size, and sound rating. A higher HP means more power, while a larger chamber accommodates more waste. A lower sound rating means a quieter operation. A 1/2 HP unit is sufficient for most households, but larger families may benefit from a 3/4 HP or even a 1 HP model.
- Horsepower (HP): The power of the motor determines its grinding ability. Higher HP handles tougher waste more efficiently. A 1/2 HP unit suits smaller households, while larger families or those who frequently dispose of bone fragments may require 3/4 HP or more.
- Grind Chamber Size: The size impacts the volume of waste it can process. Larger chambers accommodate more food scraps and prevent frequent clogs. This is particularly important for large families or those who often entertain.
- Sound Rating (dB): This measures the noise level during operation. Lower decibels mean quieter operation. Consider the location of your disposal and your noise tolerance when selecting a unit.
Gathering Your Tools and Materials
Before you start, ensure you have the necessary tools and materials. This includes things like a basin wrench, pliers, screwdrivers, and electrical tape. Having everything prepared prevents interruptions and delays during the installation.
- Basin Wrench: Essential for loosening and tightening the disposal’s mounting ring.
- Slip-Joint Pliers: Useful for gripping and turning various plumbing components.
- Screwdrivers (Phillips and Flathead): For removing and securing screws.
- Electrical Tape: For securing wire connections to prevent shorts.
- Bucket: To catch any leftover water.
Disconnecting the Old Garbage Disposal
This section details the safe and efficient removal of your old garbage disposal unit. Following these steps will prevent damage to your plumbing and ensure a clean start for your installation.
Turning Off Water and Power
Safety first! Always turn off the water supply to the disposal before beginning any work. Locate the shut-off valves under the sink and turn them fully clockwise. Then, switch off the power to the disposal at the breaker box. Failure to do this could result in serious injury.
- Locate the water supply shut-off valves under the sink (usually hot and cold).
- Turn the valves fully clockwise to shut off the water supply.
- Locate your home’s circuit breaker box.
- Turn off the breaker that controls the power to the garbage disposal.
Disconnecting Plumbing Connections
Carefully disconnect the drainpipes from the old disposal using a slip-joint pliers. Have a bucket ready to catch any remaining water. Be gentle to avoid damaging the pipes.
- Place a bucket under the drainpipes to catch any remaining water.
- Loosen the slip nuts connecting the drainpipes to the disposal using slip-joint pliers.
- Carefully separate the drainpipes from the disposal.
- Remove the garbage disposal from under the sink, it may be heavy.
Disconnecting Electrical Connections
Once the plumbing is disconnected, carefully disconnect the electrical wiring. Take note of how the wires are connected to aid in the new unit’s installation. Use electrical tape to secure any exposed wires.
- Carefully disconnect the electrical wires from the disposal’s terminals.
- Take a photo or make a note of which wire connects to which terminal. This will be helpful during the reconnection process.
- Use electrical tape to secure the exposed wire ends to prevent shorts.
Installing the New Garbage Disposal
This section walks you through the process of installing your new garbage disposal. This involves carefully connecting the plumbing and electrical components according to the manufacturer’s instructions.
Connecting Plumbing Connections
Carefully connect the drainpipes to the new disposal unit. Ensure the connections are secure and free of leaks. If necessary, use plumber’s putty to seal the connections.
- Align the drainpipes with the corresponding inlets on the new disposal.
- Tighten the slip nuts to secure the connections. Do not overtighten to avoid damage.
- Check for leaks by turning on the cold water supply. If leaks are present, readjust the connections.
Connecting Electrical Connections
Connect the electrical wires to the terminals on the new disposal, making sure each wire goes into the correct terminal. Securely fasten all connections and cover them with electrical tape, preventing any accidental shocks or shorts. Reference your notes or photos from the old disposal’s removal.
- Carefully connect the electrical wires to the corresponding terminals on the new disposal.
- Ensure the connections are secure and covered with electrical tape to prevent any short circuits.
- Follow the manufacturer’s wiring diagram to verify correct installation.
Securing the New Disposal
Once all connections are made, secure the new garbage disposal under the sink. The new unit should come with a mounting ring; tighten this ring securely. Finally, run a test cycle to verify everything works correctly.
- Carefully align the disposal to its mounting bracket.
- Use the mounting ring to firmly secure the unit to the sink.
- Turn the water supply back on and test the disposal by running cold water and activating the unit.
Troubleshooting and Maintenance
This section covers common issues and maintenance tips to prolong the life of your new garbage disposal. Regular maintenance can help prevent many problems.
Common Problems and Solutions
There are many potential issues that can arise. A common problem is a jammed disposal. Another is leaking. Many issues can be fixed with simple maintenance, including removing the obstruction or tightening the connections.
| Problem | Solution |
|---|---|
| Jammed Disposal | Use the disposal’s reset button, or remove the obstruction using tongs. |
| Leaking Disposal | Check for loose connections and tighten them. Inspect the rubber gaskets for wear and tear. |
| Disposal Doesn’t Turn On | Check the circuit breaker and ensure the disposal is properly wired. |
Debunking Common Myths About Garbage Disposals
- Myth 1: You can put anything down the garbage disposal. Fact: Avoid hard items like bones, and fibrous materials. Stick to soft food scraps.
- Myth 2: You never need to clean your garbage disposal. Fact: Regular cleaning (using ice cubes and citrus peels) prevents build-up and odors.
- Myth 3: A louder disposal is a more powerful disposal. Fact: Noise levels are related to design, not necessarily power.
FAQ
What type of garbage disposal should I buy?
The best type depends on your needs. Consider the horsepower (HP) for grinding power, the chamber size for waste capacity, and the sound rating for noise levels. A 1/2 HP unit is usually sufficient for a small household, while larger families might need a 3/4 HP or 1 HP model.
How often should I replace my garbage disposal?
Garbage disposals typically last 10-15 years with proper maintenance. However, depending on usage and maintenance, you might need to replace it sooner. Watch for frequent jams or leaks as signs of wear and tear.
Can I install a garbage disposal myself?
Yes, many people successfully install garbage disposals themselves. However, if you lack plumbing or electrical experience, it’s best to consult a professional to avoid any issues or potential accidents.
What should I do if my garbage disposal leaks?
First, turn off the water supply. Inspect all connections for leaks, and tighten them if necessary. If the leak persists, check the rubber gaskets for damage. You may need to replace the gaskets or the entire disposal.
What happens if I put the wrong items in the disposal?
Putting inappropriate items (bones, hard shells, fibrous materials) can jam the disposal or damage the blades. Always consult your disposal’s manual for a list of acceptable and unacceptable items. If it gets jammed, turn off the power, use tongs to remove the obstruction, and then reset the unit.
Final Thoughts
Replacing your garbage disposal might seem daunting, but by following these steps, you can confidently tackle the job. Remember, proper planning and safety precautions are paramount. While the process involves plumbing and electrical work, it’s a manageable DIY project if you take your time and are methodical. If you feel uncertain at any point, don’t hesitate to seek professional help. Now you have the knowledge of how to change my garbage disposal – go forth and conquer that smelly problem!