A garbage disposal unit is a valuable addition to any kitchen and provides convenience and efficiency in managing food waste. However, like any appliance, it may need replacement after about 12 years of use. It’s worth noting a new garbage disposal installation can require some wiring and plumbing skills, but with the right guidance, you can tackle this task successfully.

If you’d rather hire a trained and experienced plumber to handle the garbage disposal replacement, then call the uniformed professionals at Proline Rooter. Our team is on standby to take your call or message today.


How To Install a New Garbage Disposal

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Step 1: Gather Necessary Tools and Materials

Before beginning the installation process, gather the following tools and materials:

  • New garbage disposal unit
  • Screwdriver (flathead and Phillips)
  • Adjustable wrench
  • Plumber's putty
  • Electrical wire nuts
  • Wire strippers
  • Pipe wrench
  • Plumber's tape
  • Safety gloves and goggles

Step 2: Turn Off Power and Water Supply

Safety comes first, especially when working with electrical and plumbing systems. Start by switching off the power to the garbage disposal at the circuit breaker. Additionally, turn off the water supply to the sink to avoid any leaks during the installation.

Step 3: Remove the Old Garbage Disposal

Using a screwdriver, disconnect the drainpipe and dishwasher hose from the old disposal unit. Loosen the mounting bracket and carefully lower the disposal unit. Disconnect the electrical wiring by unscrewing the wire nuts and separating the wires.

Step 4: Prepare the New Garbage Disposal

Before purchasing or installing the new unit, make sure it is compatible with your sink's plumbing and electrical setup. Remove any packaging and check for any included instructions or guidelines from the manufacturer.

Step 5: Mount the New Garbage Disposal

Attach the mounting bracket to the sink's underside using the provided screws. Make sure the bracket is secure and aligned properly. Place the new disposal unit onto the bracket and rotate it to lock it into place.

Step 6: Connect the Plumbing

Reconnect the drain pipe and dishwasher hose to the new disposal unit. Use plumber's tape to secure the connections and prevent leaks. Tighten the connections with a pipe wrench to ensure a snug fit.

Step 7: Wire the Garbage Disposal

Carefully strip the electrical wires on both the disposal unit and the power supply. Use wire nuts to connect the corresponding wires (usually black to black and white to white). Secure the connections with electrical tape for added safety.

Step 8: Test the Installation

Once everything is connected, turn the water supply back on and then restore power at the circuit breaker. Run water through the disposal to check for leaks. Test the disposal by turning it on and listening for smooth operation without any unusual noises.

Step 10: Final Checks and Cleanup

Inspect the entire installation for any loose connections or leaks. Tighten any fittings as needed. Clean up any debris or excess materials from the installation area and dispose of them properly.

Hire a Local Uniformed Plumber Today

If you’d rather leave the plumbing work to an experienced and trained plumber, then call Proline Rooter to schedule reliable and affordable plumbing repair service or garbage disposal replacement services. Our team is on standby to take your call today.


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