Garbage Disposal Repair in San Antonio, by a Licensed Plumber
You searched garbage disposal repair in San Antonio because yours quit, and now the whole kitchen sink is out of commission. Maybe it hums but won't turn, maybe it's leaking under the cabinet, maybe it just went dead. Here's how we handle it: Armor Pro Services repairs, replaces, and installs garbage disposals across San Antonio the same day you call, and we diagnose the actual fault before quoting, so you only replace the unit when replacing it is genuinely the right call. We're licensed in Texas under RMP #36282, fully insured, locally owned, and we'll tell you straight whether yours is worth saving.

Reset, Jam, or Dead Motor: How We Triage a Disposal in San Antonio
A disposal repair takes most of an hour once we're under the sink, and better than half the calls we run in San Antonio turn out to be a jam or a reset trip, not a dead motor. So we work a fixed diagnostic order instead of guessing, and the symptom you're hearing tells us where to start.
- It hums but won't spin: that's a jam, not a dead motor. Something is wedged between the impellers and the grind ring. We kill the power, work the flywheel free from below with a 1/4-inch hex wrench in the bottom socket, clear the obstruction, then hit the red reset button. A jam cleared this way is a repair, and often a five-minute one.
- It went completely dead: that's usually power, not the motor. We confirm whether the unit is hardwired or on a switched plug, test the wall switch, and check whether the breaker or the disposal's own thermal reset button has tripped. A dead disposal is far more often a tripped reset or a bad switch than a burned-out motor.
- It grinds or trips its reset over and over: now we're looking at the motor. Bearings that grind, a unit that keeps tripping its thermal overload after the jam is clear, or a body that's leaking from the bottom shell mean the motor side is done. That's the one symptom that actually points to replacement.
We also check the seals and the drain side while we're under there. Leaks come from three specific places: the sink flange at the top, the dishwasher inlet knockout, or the discharge gasket into the P-trap, and each one is a different fix. If your kitchen sink is backing up, we confirm whether it's the disposal or an actual clog downstream in the branch line, because that's drain work, not disposal work, and we'll tell you that rather than sell you a unit you don't need. Call 210-212-7667 and describe what you're hearing; we'll put the right parts on the truck before we roll.
Repair or Replace? The Honest Threshold, and Why Horsepower Matters Here
Here's the line we draw, and it's the same one we'd draw in our own kitchen. Repair makes sense when the unit is under about 8 years old and the fault is a single isolated issue: a jam, a tripped reset, a bad switch, or one worn gasket. Those are cheap, fast fixes and the disposal has years left in it.
Replacement is the right call when any of these show up:
- The housing itself is leaking from the bottom shell. That means the internal seal that keeps water out of the motor has failed, and there is no gasket you can replace to fix it. That unit is done.
- The motor bearings are grinding, or the unit trips its own thermal reset repeatedly even after a clean jam.
- The disposal is past 10 to 12 years old with corroded internals.
Why so many die early in San Antonio: most garbage disposals last 8 to 12 years, but here that number runs on the lower end. SAWS delivers water at 15 to 20 grains per gallon of hardness, and that mineral load is hard on the grind chamber and the rubber seals over time. After swapping out disposals across Bexar County, we've learned the units that fail early are almost always the builder-grade 1/3-horsepower models that come standard in new construction north of Loop 1604.
That's why horsepower is the one spec we push on a replacement. We generally steer homeowners toward a 1/2 or 3/4-horsepower unit, because the extra torque handles the load without stalling, and the better-sealed models hold up longer against hard-water scale. A 1/3-horsepower unit stalls on a chicken bone; a 3/4 clears it. No upsell on faith, though: we'll show you the failed part first, then let you decide.
What Not to Put Down a Disposal, Especially on Hard SAWS Water
Half the early disposal deaths we see in San Antonio aren't a bad unit, they're what went down the drain. And on SAWS water at 15 to 20 grains per gallon, the margin for error is thinner than it is on soft water, because the mineral scale already coating the grind chamber leaves less room before grease and starch pack it solid. A few things should never go down, no matter what the disposal is rated for:
- Grease, oil, and fat. They pour in as a liquid and set up as a solid on the trap arm and the branch drain. Hard-water scale gives grease something to cling to, so it builds faster here than the manufacturer's lab ever tested for.
- Fibrous scraps: celery, corn husks, onion skins, artichoke. The strings wrap the impellers and jam the flywheel. This is the number-one jam we clear.
- Starchy expanders: pasta, rice, potato peels. They swell with water and turn to paste that coats the chamber and the trap.
- Coffee grounds and eggshells. They don't grind to nothing; they settle into a sludge that packs the trap arm over months.
- Bones, fruit pits, and glass. These are what wedge between the impellers and the grind ring and leave you with a humming, jammed unit.
The habit that actually protects it: run cold water for a good ten seconds before, during, and after you grind, and keep it running until the chamber is clear. Cold water keeps fats semi-solid so they get chopped and flushed instead of coating the pipe. Hot water melts grease and lets it re-set downstream where you can't reach it. Do this and a mid-grade unit will outlast a premium one that gets abused. If yours is already packing up despite doing everything right, the branch drain behind it may be the real bottleneck, and our drain cleaning crew can camera the line to find out.
The Dishwasher Drain Loop: Why It Matters and What Code Wants
If your dishwasher drains through the disposal, the connection between them is where a surprising number of "my dishwasher won't drain" and "dirty water backs up into the dishwasher" calls actually start. Two things have to be right, and a bad install gets both wrong.
First, the inlet plug has to come out. Every new disposal ships with the dishwasher drain inlet plugged with a knockout. If a dishwasher connects to that inlet and the plug was never removed during install, the dishwasher has nowhere to drain and the water backs up into the machine. It's the single most common reason a brand-new disposal leaves a dishwasher standing in water, and it's a five-minute fix if you catch it.
Second, the drain line needs an air gap or a high loop. This is the part homeowners rarely know about. To keep dirty disposal water from siphoning back into the dishwasher, the drain hose has to either run through a countertop air-gap fitting or be looped up and secured as high as possible under the counter, above the flood rim of the sink, before it drops to the disposal inlet. Skip the loop and you can get gray water flowing backward into the clean dishwasher. Here's how we set it:
- Confirm the connection method. We check whether the kitchen was plumbed for a countertop air gap (the small chrome cap next to the faucet) or relies on a high loop. Either satisfies the anti-siphon requirement in the plumbing code.
- Secure the high loop. If there's no air gap, we strap the dishwasher drain hose to the underside of the countertop at its highest point, then run it down to the disposal inlet. Zip-tied loose so it sags is not a high loop.
- Connect to a clear inlet. We confirm the knockout is out, connect the hose with a proper clamp, and run a full dishwasher cycle to watch it drain and confirm nothing backs up.
We test the dishwasher loop on every disposal install and replacement, because it's the detail a rushed swap skips and the callback it causes weeks later. Get a free estimate at 210-212-7667 and tell us if a dishwasher ties in.
Garbage Disposal Installation: New Sink, New Unit, or First-Time Add
Installing a garbage disposal is more than dropping in a unit and calling it done, and a bad install is why so many disposals leak within a month. Whether it's a brand-new kitchen, a sink replacement, or adding a disposal where there wasn't one before, the sequence is the same and every step matters.
- Assess the setup. We check the under-sink space, the existing drain configuration, whether there's a dishwasher to tie in, and whether the circuit is a switched plug or a hardwired connection. If you're adding a disposal for the first time, we confirm there's a dedicated switch and adequate electrical, and we tell you before we start if an electrician needs to set that.
- Mount the flange. The sink flange is bedded in plumber's putty and the mounting assembly torqued evenly so it seats flat. A flange that isn't seated square is the number-one cause of a slow leak at the top of the sink that shows up weeks later.
- Tie in the dishwasher correctly. If a dishwasher drains through the unit, we knock out the inlet plug and set the anti-siphon high loop or air gap covered above. Skip either and you get a dishwasher that won't drain or gray water backing into it.
- Hang the unit and connect the discharge. The disposal locks onto the mounting ring, then the discharge tube ties into the P-trap at the correct height and pitch so it drains cleanly and doesn't trap standing water.
- Wire and test. We connect the cord or hardwire per the unit's terminal, then run water, run the unit, run the dishwasher cycle if present, and check every joint for a leak before we leave. Nothing gets signed off until it's run under real water.
Ready for a new unit? Tell us what you've got and get a free estimate, or call and we'll size it on the phone.
Garbage Disposal Replacement: Swapping a Failed Unit
A straight replacement, same-brand mounting to same-brand mounting, is one of the faster jobs we do: typically 45 minutes to an hour and a half depending on how corroded the old connections are and whether the mounting standard matches. The variable that adds time is almost always the drain side. Older InSinkErator mounts and newer models share a 3-bolt ring on most units, so the disposal often clicks onto the existing flange without pulling the sink apart, which saves real time and money. When the mounting standard is different, we replace the whole flange assembly, and that's when the job runs longer.
Two things we check on every replacement that a quick swap skips:
- The P-trap and discharge tubing. If the old unit sat there for a decade, the trap arm is often crusted with grease and scale, and reusing it just means a clog in the new unit within months. We clear or replace it while we're in there.
- The electrical connection. Corroded wire nuts or a brittle old cord get replaced, not reused, because that's a callback and a safety issue waiting to happen.
We'll tell you honestly if your old unit was quietly clogging the branch drain the whole time, because a disposal replacement won't fix a grease-packed kitchen line, and we won't let you pay for a new disposal thinking it solved a drain problem it didn't. If the line's the real issue, that's a job for our drain cleaning crew, and we'll say so.
When You Should NOT Replace Your Disposal Yet
We'll be straight with you: not every disposal problem is a reason to buy a new unit, and some of them you can knock out yourself in five minutes without paying anyone. Here's when to hold off:
- Don't replace a disposal that hums but won't spin. That's a jam, not a dead motor. Turn off the power, put the 1/4-inch hex wrench that came with the unit into the socket on the bottom center, and work it back and forth until the flywheel turns freely. Then press the red reset button. That fixes a large share of humming disposals for free.
- Don't replace one that just went dead, not before you press the reset. Disposals trip their own thermal overload when they've been overloaded or jammed, and the reset button on the bottom clears it. If the reset doesn't hold, check the breaker and the wall switch next. A dead disposal is a bad motor far less often than people assume.
- Don't call anyone if it works fine and you just read they only last 10 years. Age alone isn't a reason to replace a unit that grinds cleanly, drains well, and doesn't leak. Run it until it gives you a real reason.
When it does start leaking from the bottom shell, grinding on the bearings, or tripping its reset over and over, that's when a call actually saves you money instead of spending it early. Call 210-212-7667 and we'll tell you which side of that line you're on before we roll a truck.
Local Water, Local Homes, and Why Disposals Fail Here
Disposal life in the San Antonio metro tracks closely with the water and the housing stock, and it's worth knowing what you're working with. SAWS hardness runs 15 to 20 grains per gallon across most of Bexar County, and Schertz along the Guadalupe and Comal line runs even harder near 20 gpg. That mineral load scales the grind chamber and stiffens the rubber splash guard and seals, which is why disposals here rarely hit the top of their rated lifespan without a water softener ahead of them.
The housing stock matters just as much, and it splits along two lines:
- Newer subdivisions north of Loop 1604 and out toward Stone Oak came with the cheapest 1/3-horsepower disposals the builder could spec, and those are the ones we replace most often, usually right around the 8-year mark.
- Older core neighborhoods like Monte Vista, Olmos Park, and Alamo Heights inside Loop 410 have cast-iron and older galvanized branch drains under those pre-1970 kitchens. They don't tolerate the grease and food solids a disposal sends downstream, so a disposal in one of those homes is only as reliable as the drain line behind it.
When we install or replace a disposal in any of the five communities we serve, San Antonio, Alamo Heights, Schertz, Converse, and Helotes, we account for the local water and the drain material behind the sink, not just the unit itself. Permits, when a job's scope requires them, are filed through the City of San Antonio Development Services Department under RMP #36282. Ready when you are: call 210-212-7667.
Frequently asked
My garbage disposal is humming but won't turn. What's wrong?
That humming is the motor trying to spin against a jam. Something, often a bone, a fruit pit, or a piece of glass, is wedged between the impellers and the grind ring, and the motor can't overcome it. Turn off the power at the switch first. Then insert the 1/4-inch hex wrench that came with the disposal into the socket on the bottom center of the unit and work it back and forth until the flywheel turns freely. Clear the obstruction, then press the red reset button on the bottom. If it still only hums after that, the motor may be failing. Call 210-212-7667 and we'll diagnose it.
My garbage disposal is leaking from the bottom. Can it be fixed?
A leak from the bottom shell of the disposal usually can't be repaired. Leaks from the top sink flange or the dishwasher inlet are gasket fixes we can do. But water coming from the bottom center of the body means the internal seal that keeps water out of the motor housing has failed, and there's no external gasket that fixes that. That unit needs to be replaced. Before you assume the worst, wipe it dry and run water to confirm where the leak actually originates, top, side, or bottom, then call 210-212-7667.
Where is the reset button on a garbage disposal?
It's on the bottom center of the unit, a small red or black button that pops out when the disposal trips its own thermal overload. Reach under the sink, feel for it on the underside of the disposal, and press it firmly back in. If it won't stay pushed in, the motor is still hot; wait 10 minutes and try again. If the disposal is jammed, clear the jam first with the hex wrench in the bottom socket, because the reset won't hold while the unit is still bound up.
How long does a garbage disposal last?
Most garbage disposals last 8 to 12 years. In San Antonio they tend to run on the lower end of that range because SAWS water at 15 to 20 grains per gallon of hardness scales the grind chamber and hardens the seals over time. Builder-grade 1/3-horsepower units, common in newer subdivisions north of Loop 1604, are the ones we replace earliest, often around year 8. A 1/2 or 3/4-horsepower unit, ideally with a water softener ahead of it, holds up considerably longer here.
My dishwasher won't drain into the garbage disposal. Why?
The most common cause is a dishwasher inlet plug that was never knocked out during the disposal install. Every new disposal ships with that inlet plugged, and if your dishwasher drains through the disposal, that plug has to be removed or the water has nowhere to go and backs up into the dishwasher. On a disposal that used to drain fine and suddenly won't, the more likely cause is a clog in the discharge or the P-trap. Either way, call 210-212-7667 and we'll pinpoint which it is.
Do you install a garbage disposal where there isn't one now?
Yes. Adding a disposal for the first time involves fitting the mounting flange, tying the discharge into the P-trap, and connecting to a switched circuit. If there's no dedicated switch or the electrical isn't set up for it, we'll tell you that up front, because the electrical portion may need a licensed electrician before we complete the plumbing side. We handle the full plumbing installation and test it under real water before we leave. Call 210-212-7667 for a free estimate.
Is it cheaper to repair or replace a garbage disposal?
It depends on the fault and the age of the unit. A jam, a tripped reset, or a single worn gasket on a unit under about 8 years old is a fast, low-cost repair worth doing. A disposal leaking from the bottom shell, grinding on its bearings, or past 10 to 12 years old is usually better replaced than repaired, because you'd be putting money into a unit near the end of its life. We diagnose the exact fault and give you a free estimate before any work, so you can decide with real numbers. Call 210-212-7667.