Garbage disposal installation
Installing a disposal means mounting it to the sink flange, connecting it to the drain and dishwasher, and wiring it to a switched outlet or hardwired circuit. A new disposal needs the dishwasher knockout plug removed if a dishwasher drains through it.
Disposals usually fail by leaking from the unit body, jamming repeatedly or no longer turning on after a reset. A leak from the body means internal seals have failed, which favors replacement.
Same-brand replacements can often reuse the mounting ring; switching brands means a new mount.
Signs you need garbage disposal installation
- Leaking from the bottom of the unit
- Repeated jams
- Hums but won't spin after reset
- No disposal and you want one
How garbage disposal installation is done
- 1
Check power and space
Confirm a switched outlet or circuit and room under the sink.
- 2
Mount and connect
Install the flange and mount, connect drain and dishwasher.
- 3
Test
Check for leaks and test with the dishwasher.
What affects the cost of garbage disposal installation
- Disposal model and size
- Electrical work if no outlet exists
- New mount vs. reused mount
Ask for the trip fee and the total price before work starts.
Need garbage disposal installation? Call now
SteadWell is a free referral service, not a plumbing company. Calling (833) 753-0180 connects you with an independent, licensed plumber who serves your ZIP code; the plumber quotes and performs the work. Calls may be recorded.
Garbage disposal installation: common questions
Why won't my dishwasher drain after a new disposal?
The dishwasher knockout plug inside the disposal inlet wasn't removed.
Repair or replace a leaking disposal?
A leak from the unit body usually means replacement; leaks at connections are often repairable.
Do I need an electrician?
If there's no outlet or circuit under the sink, yes, for the electrical part.