A garbage disposal that's been making grinding sounds for months before stopping entirely often has a seized bearing or cracked impeller β signs the motor isn't worth repairing. Our techs in Bothell tell you honestly whether a repair or a same-day unit swap makes more financial sense.
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Garbage disposal failures have specific, diagnosable causes. Our techs don't just swap units β they identify what failed and whether repair or replacement is the right call for your situation.
Hum but no spin: jammed impeller. No sound at all: tripped thermal overload or failed motor. Intermittent operation: loose wiring at the switch or disposal unit. Continuous drain from the sink collar: failed sink flange gasket. Leak from the side: dishwasher drain hose connection or internal body crack. We trace the symptom to the specific cause before recommending any solution.
InSinkErator models use a 1/4-inch Allen wrench at the center bottom; Waste King models use a broom-handle approach at the top. Knowing which you have before arriving saves time and prevents the wrong tool damaging the motor shaft.
A disposal that jams once is worth clearing and resetting. A disposal that jams repeatedly, has a seized turntable bearing, emits burning smells, or is over 10 years old is likely approaching motor failure β and the repair cost of a failed motor exceeds the cost of a new unit.
A disposal installed without properly removing the dishwasher drain knockout plug is a common installation error that floods the dishwasher interior. We check this and correct it if present.
Most disposal calls complete in 30β60 minutes β same visit, flat-rate pricing.
A disposal that hums with no rotation has a jammed impeller plate β the spinning plate has been stopped by a bone fragment, a piece of silverware that fell in, or hard food buildup around the shredder ring. We use the jam-clearing wrench at the center motor socket to manually rotate the impeller free, remove any obstruction from the grinding chamber, and press the thermal overload reset button before testing.
A disposal that makes no sound when switched on has either tripped its thermal overload protector (the red button on the bottom β press it and try again) or has a wiring issue at the switch or disposal unit. We check the reset button, test for power at the disposal's wire connection, and test the wall switch for continuity.
Disposal leaks come from three locations: the sink flange (top of the unit where it mounts to the sink drain opening β repaired by re-sealing the flange with plumber's putty and re-tightening the mounting ring), the side port (dishwasher drain hose connection β usually a loose hose clamp or cracked fitting), or the bottom of the unit (internal body crack or failed internal seal β indicates replacement needed).
An unusually loud grinding, rattling, or metal-on-metal sound from a disposal almost always means either a hard object (bottle cap, small utensil, pit from stone fruit) is in the grinding chamber, or an impeller piece has broken and is contacting the shredder ring. We access the grinding chamber safely, remove any foreign objects, and inspect the impeller and shredder ring for damage.
If the slow drain persists after cleaning the drain arm and p-trap, a camera scope of the kitchen drain line is the next step to check for blockage further downstream.
When the motor has failed, the unit body is cracked, or the existing unit is underpowered for the household's use pattern, we replace the disposal with a new unit matched to the sink drain configuration. We carry 1/2 HP, 3/4 HP, and 1 HP units from InSinkErator and other major brands on our trucks for same-day installation.
A disposal call takes 30β60 minutes in most cases. Here's exactly how it goes β from your first call to a clean, functional kitchen drain.
If you know the disposal is over 10 years old, tell us β that changes how we approach the repair-vs-replace conversation upfront.
The tech identifies the failure type in minutes: jam test at the motor socket, reset button check, power confirmation at the wire connections, leak source tracing. We know what each symptom means and we go straight to confirming it.
You decide. We don't upsell replacement when repair is the right answer, and we don't push a cheap repair that won't hold on a unit that's genuinely at end of life.
We leave the cabinet dry and the disposal running quietly. If a dishwasher drain hose was involved, we run a dishwasher cycle to verify no backup occurs.

Disposal hummed and wouldn't spin. I'd already tried the Allen wrench trick without success. Masters Plumbing Service's tech came out, worked the impeller free from underneath while removing a piece of broken ceramic that had fallen in β it had wedged between the impeller and the grinding ring in a way I couldn't have cleared from the top. Cleared the jam, pressed the reset, tested. Five-minute fix. Honest about the call minimum charge, no attempt to upsell a replacement on a perfectly good motor.
After we added a dishwasher, it started backing up every cycle. Masters Plumbing Service found the problem immediately β the previous installer had forgotten to knock out the dishwasher drain plug inside the disposal inlet. The plug was blocking the drain port. Two-minute fix. The tech also tightened the dishwasher drain hose clamp, which was loose. Never had another backup.
Disposal leaking from the sink collar area. Previous owner had installed it with silicone instead of plumber's putty at the flange β silicone doesn't hold the mounting pressure correctly and had separated. Tech re-seated the flange with putty, re-tightened the mounting ring, and the leak stopped. Tested with a full minute of running water. All clear.

Our trucks carry replacement disposal units in common horsepower ratings for same-day installation when the motor has failed.

Our disposal techs in Bothell, WA carry the tools and replacement units to resolve any disposal problem same visit. Flat-rate pricing, honest repair-vs-replace guidance, and no unnecessary upselling.
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