Southwest San Antonio · Licensed & insured
Know what's wrong before a plumber tells you.
Most people call a plumber with no idea what the problem is or what it should cost, and the whole trade is built around that gap. We'd rather close it. Below is a plain reading of the most common symptoms and what usually causes them, so you're not walking in blind.
Call or text, seven days
(210) 981-6943- Diagnosis explained in plain English
- Flat quote before any work starts
- Licensed, insured, permitted
- Short-notice and evening calls
Symptom chart
What it's doing, and what that usually means.
Ten problems we get called about every week. This won't replace a diagnosis, but it will tell you whether you're looking at a thirty-minute part swap or something that needs opening a wall.
| What you're seeing | Usual cause | What it takes |
|---|---|---|
| Toilet runs and won't stop | Failed flapper or fill valve | Half-hour repair. Parts ride on the truck. |
| Hot water gone in five minutes | Broken dip tube or a dead lower element | Test the elements first. Often a repair, not a new tank. |
| Every drain in the house is slow | Main line stoppage, not a fixture clog | Cable or jet from the cleanout, never through your tub. |
| Warm spot on the floor | Hot-side slab leak | Electronic location before any concrete gets opened. |
| Water bill jumped, nothing looks wrong | Running toilet, or a leak underground | Meter test with everything off, then isolate the line. |
| Sewer smell from a spare bathroom | Dried-out P-trap or a blocked vent | Refill and watch it. If it returns, the vent stack is the problem. |
| Pipes bang when a faucet shuts | Water hammer, usually from high pressure | Test static pressure, then an arrestor or a new regulator. |
| Low pressure at one fixture only | Clogged aerator or a scaled cartridge | Clean or swap it. Usually done in the same visit. |
| Low pressure through the whole house | Failed pressure regulator or a partly closed main | Gauge it at the hose bib, then replace the PRV. |
| Toilet gurgles when the washer drains | Partial main line blockage or a vent issue | Camera the line before clearing, so it's fixed once. |
If yours isn't on this list, call and describe it. We'll tell you over the phone whether it sounds urgent, and we won't invent urgency to fill a slot.
What we handle
Seventeen jobs. Most available same day.
Residential and light commercial. If it moves water or gas through your building, it's on this list.
Emergency response
Burst lines, active leaks, failed heaters. Short-notice calls seven days a week.
Burst pipe repair
Split copper, cracked risers, and failed supply lines cut out and replaced.
Drain clearing
Cable or hydro jet, picked by what actually caused the stoppage.
Main line stoppages
Cleared from the cleanout so nothing comes back up through a fixture.
Sewer camera inspection
You see the footage before anyone quotes a dig.
Sewer repair & replacement
Root intrusion, bellied runs, and collapsed clay pipe.
Water heater replacement
Straight swap or an upgrade. Permitted where the city requires it.
Tankless installation
Sized to your real fixture count, not whatever's on the shelf.
Slab leak location
Found electronically before a single square foot gets opened.
Whole-home repipe
PEX or copper, sequenced to keep your water on where possible.
Water softeners
Local water scales a heater fast and shortens every appliance you own.
Pressure regulators
Anything over 80 psi kills fixtures early. We gauge it, then replace.
Gas line work
New runs, appliance hookups, leak testing, and pressure inspections.
Fixtures & valves
Toilets, faucets, seized angle stops, and leaking supply lines.
Garbage disposals
Jammed, humming, or weeping at the flange. Repaired or replaced.
Outdoor spigots
Split hose bibs, failed vacuum breakers, and yard line repairs.
Freeze damage
Burst pipe and cracked bibs after a hard freeze, plus insulation before the next one.
Why us
The advantage is information.
The three complaints people have about plumbers are always the same. Here's how each one gets handled.
You approve the number first
We diagnose, quote the job flat, and stop. Say no and you owe nothing past the trip. No hourly meter running while you think about it.
You see what we see
Camera footage, a photo of the failed part, the reading off the gauge. If we say it needs replacing, the evidence comes with it.
We come back if it fails
Every repair carries a workmanship guarantee. If what we fixed fails on us, we return and make it right at no charge.
About us
Military Drive West. Southwest side coverage.
Advantage Plumber & Drain runs out of Military Drive West, which puts Lackland, Valley Hi, Port San Antonio, Indian Creek, and Southwest ISD neighborhoods a few minutes away instead of a cross-town haul. We cover the rest of the city too, but on this side you'll get us faster.
The southwest side has a lot of houses built between the fifties and the eighties, which means cast iron drain lines at the end of their service life, original galvanized supply, and slabs poured before anyone worried about what ran under them. We deal with that housing stock constantly and we know what to look for before it fails.
Residential and light commercial, from a seized angle stop to a full sewer replacement.
- Call or text
- (210) 981-6943
- Based at
- 7414 Military Dr W
San Antonio, TX 78227 - Hours
- Open until 11 PM, 7 daysShort-notice and evening calls taken.
- Payment
- Cash, credit and debit cards, check. Collected on completion.
Not sure how bad it is?
Describe it on the phone. We'll tell you straight whether it can wait until Tuesday or whether you should shut the water off right now.
Call (210) 981-6943Service area
Where we work.
Southwest San Antonio out through Medina and Atascosa County, plus the rest of the city. Not sure if you're in range? Call and ask.