⚡ Quick Answer
Most garbage disposal problems are DIY-fixable. Disposal won't turn on? Press the reset button on the bottom. Humming but stuck? Turn off power and use the hex wrench to manually rotate the flywheel. Professional repair costs $100-$250 in Toronto. Replace if leaking from bottom, over 10 years old, or making grinding metal sounds.
🔑 Key Takeaways
- Reset button: Fixes 50%+ of "dead" disposals—located on bottom of unit
- Humming = jammed: Use hex wrench (1/4") in bottom slot to free flywheel
- Leaks from bottom: Internal seal failure—replacement needed
- New disposal: $250-$450 installed in Toronto (including unit)
- Lifespan: 8-12 years for typical residential units
⚠️ Safety First
NEVER put your hand in the disposal—even when it's off. Always turn off power at the switch AND breaker before any repair. Use a flashlight and pliers/tongs to remove objects. The impeller blades are sharp and the unit can activate unexpectedly.
Common Garbage Disposal Problems
Garbage disposals are simple but powerful appliances—essentially a spinning flywheel with impellers that fling food waste against a grind ring. Most problems stem from jams, electrical issues, or wear over time.
1. Disposal Won't Turn On (No Sound)
When you flip the switch and hear absolutely nothing—no hum, no click—the issue is electrical or the motor has failed.
Step-by-Step Fix:
- Check the reset button: Look at the bottom of the disposal under the sink. Press the small red (or black) button firmly. If it was tripped, it will click. Try the disposal again.
- Check the outlet: If your disposal plugs into an outlet under the sink, make sure it's connected. Test the outlet with another appliance.
- Check the circuit breaker: Disposals often share a circuit with the dishwasher. Look for a tripped breaker in your panel.
- Check the wall switch: Switches can fail. With power off, you can test with a multimeter or have an electrician check.
- Motor failure: If all electrical checks pass and the reset won't stay engaged, the motor has likely burned out. Replacement is needed.
💡 Pro Tip: Reset Button Location
The reset button is on the very bottom of the disposal—you may need to lie on your back and look up. It's usually red, about the size of a pencil eraser. If it pops out repeatedly when pressed, the disposal is continuously overloading (likely a jam or motor issue).
2. Disposal Hums But Doesn't Spin (Jammed)
Humming means the motor is receiving power but the flywheel is stuck. This is the most common disposal problem—and easiest to fix yourself.
⚠️ Critical
Turn OFF the disposal immediately when you hear humming. Continuous humming can burn out the motor within minutes. Let it cool for 10-15 minutes before attempting repairs.
How to Clear a Jam:
Method 1: Hex Wrench (Best)
- Locate the hex socket on the bottom center of the disposal
- Insert the disposal wrench (came with unit) or a 1/4" Allen wrench
- Work the wrench back and forth—you'll feel resistance from the jam
- Continue until the flywheel rotates freely (360°)
- Press reset button, run water, turn on disposal
Method 2: Broom Handle (From Above)
If you don't have wrench access, insert a wooden broom handle or thick dowel into the disposal from above. Push against the impellers and work them back and forth until free. Never use your hands.
Common Jam Causes:
- Bones (small chicken/pork bones often slip through)
- Fruit pits (peach, avocado, cherry)
- Silverware or small objects falling in
- Fibrous vegetables wrapping around impellers
- Glass, plastic, or metal accidentally dropped
3. Disposal Leaking
Water leaking from your disposal can come from multiple locations—the source determines whether repair or replacement is needed.
| Leak Location | Cause | Fix | Cost |
|---|---|---|---|
| Top (sink flange) | Loose mounting or failed putty | Tighten mounting bolts or reseal with plumber's putty | DIY or $100-$150 |
| Side (dishwasher connection) | Loose hose clamp or cracked nipple | Tighten clamp or replace connector | DIY or $100-$125 |
| Bottom discharge | Loose drain connection or worn gasket | Tighten connection or replace rubber gasket | DIY or $100-$150 |
| Bottom of unit | Internal seal failure | Replacement required | $250-$450 |
How to find the leak: Dry everything thoroughly, plug the sink, fill with water mixed with food coloring, then remove plug. Watch where colored water appears under the disposal.
Bottom leak = replacement: When water leaks from the very bottom of the disposal housing (not the discharge pipe), the internal seals have failed. These cannot be repaired—the unit must be replaced.
4. Slow Draining / Standing Water
If your disposal runs but water drains slowly or not at all, the problem is usually in the drain line rather than the disposal itself.
Causes & Solutions:
Clogged discharge pipe: The horizontal pipe from disposal to drain can clog with grease and debris. Disconnect the pipe (with bucket ready) and clear with a drain snake or rinse with hot water.
P-trap blockage: Remove and clean the P-trap under the sink. Accumulated grease and food particles often collect here.
Worn impellers: If the disposal runs but doesn't grind effectively, the impellers may be worn. Hold a flashlight—if impellers look rounded/smooth rather than showing crisp edges, the disposal is due for replacement.
Main drain blockage: If other drains are also slow, the problem is downstream in the main drain line. This requires professional drain cleaning.
5. Bad Odors
Garbage disposals can develop unpleasant smells from trapped food residue—a common complaint in Toronto homes, especially during summer.
Deep Cleaning Methods:
Ice and salt: Pour 2 cups of ice and 1 cup of coarse salt into the disposal. Run with cold water for 30 seconds. The abrasive action scours the grinding chamber and impellers.
Baking soda and vinegar: Pour 1/2 cup baking soda, let sit 30 minutes, then add 1 cup white vinegar. Let foam for 10 minutes, then rinse with hot water while running disposal.
Citrus peels: Grind lemon, lime, or orange peels regularly to add fresh scent and clean with citric acid.
Clean the splash guard: The black rubber flaps at the sink opening trap food on their underside. Scrub with a brush and dish soap—this is often the main odor source.
💡 Maintenance Tip
Always run cold water for 20-30 seconds after the disposal stops grinding. This flushes the drain line and prevents buildup. Cold water also solidifies any grease so it can be chopped up rather than coating pipes.
What NOT to Put in Your Disposal
Avoid these items to prevent jams, clogs, and premature wear:
- Grease, fats, oils: Coat components and solidify in drain lines
- Fibrous vegetables: Celery, artichokes, asparagus, corn husks wrap around impellers
- Bones (large): Beef and large pork bones can jam or damage impellers
- Fruit pits: Peach, avocado, cherry pits are too hard
- Pasta and rice: Expand with water, create paste-like clogs
- Potato peels: Create starchy paste that clogs drains
- Coffee grounds: Accumulate in pipes over time (not harmful to disposal but clog drains)
- Egg shells: Membrane wraps around impellers (despite the myth they "sharpen" blades)
- Non-food items: Metal, glass, plastic, rubber bands, twist ties
Safe items: Most soft foods, small chicken bones, fruit scraps (without pits), vegetable scraps (non-fibrous), ice cubes, citrus peels.
When to Replace Your Garbage Disposal
Replace rather than repair if you notice:
- Leaking from bottom: Internal seal failure cannot be repaired
- Age 10+ years: Components wear and motors weaken
- Grinding/screeching noises: Indicates worn bearings or damaged motor
- Frequent jams: Worn impellers can't handle normal loads
- Repeated reset trips: Motor is overheating from internal failure
- Burning smell: Electrical or motor failure imminent
- Poor grinding: Food comes out in large chunks rather than liquefied
New Disposal Costs in Toronto:
| Disposal Type | Unit Cost | Installed Cost | Best For |
|---|---|---|---|
| 1/3 HP (budget) | $80-$120 | $200-$300 | Light use, 1-2 person households |
| 1/2 HP (standard) | $120-$180 | $250-$350 | Average family, daily cooking |
| 3/4 HP (recommended) | $180-$280 | $300-$400 | Heavy use, bones, fibrous items |
| 1 HP (premium) | $280-$400 | $400-$550 | Large families, near-commercial use |
We recommend 3/4 HP or higher for most Toronto homes—the extra power handles tougher scraps and is less prone to jamming. InSinkErator, Waste King, and Moen are reliable brands available locally at Home Depot, Lowe's, and plumbing supply houses.
Need Garbage Disposal Help?
Whether it's a stubborn jam, a leak, or time for a new installation, our licensed plumbers can help. Same-day service available throughout Toronto and the GTA.
Call (647) 554-4356Frequently Asked Questions
Why is my garbage disposal humming but not spinning?
A humming disposal is jammed—the motor runs but the flywheel is stuck. Turn it OFF immediately to prevent motor burnout. Use the hex wrench (included with disposal or 1/4 inch Allen key) in the bottom slot, work back and forth to free the jam.
How much does garbage disposal repair cost in Toronto?
Garbage disposal repairs in Toronto cost $100-$250. Simple jam clearing: $100-$125. Reset/electrical issues: $100-$150. Leak repair at seals: $125-$200. New disposal installation: $250-$450 (including unit).
When should I replace my garbage disposal?
Replace your garbage disposal if it's over 10 years old, leaks from the bottom (internal seal failure), makes grinding/screeching metal noises, trips breaker repeatedly, or drains very slowly even when cleared. A new disposal costs $150-$350 plus $100-$150 for installation.
What should never go in a garbage disposal?
Never put grease/oil, fibrous vegetables (celery, artichokes), large bones, fruit pits, pasta/rice, coffee grounds, egg shells, or potato peels in your disposal. These items cause jams, coat components, or clog drain lines.
How do I get rid of garbage disposal odors?
Clean with ice and salt (abrasive scrubbing), baking soda and vinegar (foam cleaning), or citrus peels (natural deodorizer). Most importantly, scrub the underside of the black rubber splash guard—this traps food and is often the main odor source.
Can I install a garbage disposal myself?
DIY installation is possible if replacing an existing unit—the mounting system is usually compatible. New installations requiring electrical work or drain modifications should be done by a licensed plumber. In Toronto, electrical work for new circuits requires a permit and licensed electrician.