Garbage Disposal Repair & Replacement — DIY Fixes, Costs & When to Call a Plumber
Garbage Disposal Repair & Replacement — DIY Fixes, Costs & When to Call a Plumber
A garbage disposal that stops working can quickly turn a kitchen into chaos — clogged sinks, bad smells, and food backing up. The good news? Many disposal problems can be fixed without replacing the entire unit. But some signs mean it’s time for a new one.
This guide covers:
✔ Common garbage disposal problems
✔ Safe DIY fixes you can try now
✔ Repair & replacement cost breakdown
✔ When a plumber is the right call
Before You Touch Anything
Unplug the disposal or turn off the breaker.
Never put your hand inside while it’s connected to power.
Common Garbage Disposal Problems & Easy Fixes
1. Disposal Hums but Doesn’t Spin
Likely cause: jammed impeller
Fix:
- Press the reset button underneath
- Use an Allen key (hex key) in the bottom slot to free the blades
- Rotate back and forth gently
2. Disposal Won’t Turn On at All
Likely causes:
- Tripped breaker
- Burned-out motor
- Loose power connection
Fix:
- Check the outlet & reset button
- Reset GFCI outlet (if bathroom/kitchen outlet type)
- Reset the breaker at the panel
3. Sink Drains Slowly After Running the Disposal
Likely cause: Clogged drain line
Fix:
- Run hot water + dish soap
- Use a plunger (NOT with chemicals)
- Do NOT use Drano — damages seals & blades
If still blocked → pipe clog, not disposal issue.
4. Leaking Disposal
Common leak points:
- Bottom of the disposal (bad sign)
- Sink flange seal
- Dishwasher connection
Fix:
- Tighten mounting bolts & pipe clamps
- Replace worn gaskets
- If leaking from the body — unit is failing
💸 Repair & Replacement Cost (2026 US Pricing)
| Service | Cost Range |
|---|---|
| DIY Fix (reset, jam remove) | Free – $20 |
| Minor Repair (seal, gasket) | $75 – $150 |
| Plumber Repair Service | $120 – $300 |
| New Garbage Disposal Unit | $120 – $350 |
| Full Replacement w/ Install | $250 – $600 |
If your disposal is 8+ years old, replacement is usually smarter than repair.
When to Call a Plumber Instead of DIY
Call a pro if:
- The reset button trips repeatedly
- Water leaks from the bottom of the unit
- There’s a burning smell (motor failure)
- The disposal keeps jamming
- Power isn’t restoring after a reset
When Replacement Makes More Sense
Replace if:
- Cracks in the casing
- Rust inside the chamber
- Loud grinding or burning smell
- Over 8–10 years old
- You want a quieter, stronger unit
New models are quieter, energy-efficient, and handle more waste.
Final Takeaway
A garbage disposal isn’t complicated — but when it fails, it affects your whole kitchen.
Fix what you can safely, but don’t risk electrical or plumbing damage.
👉 Find a garbage disposal repair plumber at PlumbersCorners.com
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