Who Installs a Garbage Disposal: Plumber or Electrician?

If you’re wondering who installs a garbage disposal, plumber or electrician, the answer depends on your setup. Most installations are straightforward and fall under a plumber’s job, especially when replacing an existing unit. However, if your kitchen doesn’t already have a power source under the sink, an electrician may need to be involved before installation can be completed.

Short answer: call a plumber. They handle the physical installation, plumbing connections, and basic electrical hookup. You only need an electrician if new wiring, an outlet, or a dedicated circuit is required.

When You Need a Plumber Only

You need just a plumber if:

• An electrical outlet already exists under your sink
• You are replacing an existing disposal (same or different model)
• The plumbing connections are standard

The plumber will remove the old unit, mount the new one, connect the drain pipes, connect the dishwasher hose (if applicable), plug in the power cord, and test for leaks.

Cost: $80-$200 for labor (1-2 hours)

When You Also Need an Electrician

If your garbage disposal doesn’t come with a preinstalled power cord, or if there’s no power outlet under the sink, you’ll need to call an electrician.

When to call an electrician

You need an electrician in addition to a plumber if:

• There is no electrical outlet under your sink
• Your home needs a new dedicated circuit for the disposal
• The disposal requires hardwiring (no plug-in cord)
• Your existing outlet is not GFCI-protected and needs upgrading
• Your home has aluminum wiring or outdated electrical panels

The electrician installs the outlet, runs new wiring, and ensures everything meets local code. The plumber then handles the physical installation.

Cost: $ 150–$400+ for electrical work, in addition to plumber costs. See our installation cost breakdown for full pricing.

Can a Plumber Do Electrical Work?

Most plumbers can handle basic electrical tasks: connecting a pre-wired power cord to a disposal, plugging the disposal into an existing outlet, and swapping a wall switch. They cannot (and should not) run new circuits, install new outlets, or modify your home’s electrical panel.

For wiring details, read our garbage disposal wiring guide.

Conclusion

For most replacements, a plumber is all you need. If your kitchen lacks an outlet under the sink or needs electrical work, bring in an electrician first. For simple replacements with corded disposals and existing outlets, DIY is a realistic option that saves $100-$400 in labor.

FAQ’s