No hot water at ANY fixture — sinks, showers, tubs all cold. Here's what to do about hot water problems in San Antonio — including the local factors that change the advice.
Do this right now
Check the breaker (electric heaters)
A tripped breaker is the #1 'mystery' cause. Flip it fully off, then on. If it trips again immediately, stop — that's an electrical fault for a pro.
Check the pilot light (gas heaters)
If the pilot is out, follow the lighting instructions printed on the heater. If it won't stay lit, the thermocouple is likely bad — a quick pro fix.
Check the thermostat setting
It should read around 120°F. If someone bumped it down — or it's maxed and water is still cold — the thermostat or element may have failed.
Note the heater's age
Find the serial number label: the first digits usually encode the manufacture date. Tank heaters last 8–12 years; past that, replacement usually beats repair.
Call for diagnosis
Call (844) 699-1165. Tell us gas or electric, tank or tankless, the age, and exactly what the water is doing — a pro can often diagnose by phone and arrive with the right parts.
No Hot Water in San Antonio? Talk to a local pro now.
Free for homeowners · 24/7 · Licensed local pros
What makes hot water problems different in San Antonio
- Very hard water from the Edwards Aquifer limestone — among the hardest in Texas — which means sediment buildup kills heaters faster here than the national average.
- In San Antonio, extreme South Texas heat with occasional hard winter freezes — garages and attics where heaters often sit see real temperature swings.
- slab-on-grade ranch homes and Hill Country limestone-influenced builds
- Hard-water scale is the silent killer of water heaters and fixtures here
Neighborhoods
If you're in Alamo Heights, Stone Oak, Southtown, Medical Center, New Braunfels, Schertz, Converse, Northwest Side, or anywhere across the San Antonio metro — San Antonio, New Braunfels, Schertz, Converse — the steps above apply. Call (844) 699-1165 and mention your neighborhood so we match you with a pro who knows the area.
What to tell the pro when you call
- Gas or electric, tank or tankless, and the approximate age
- Exactly what the water does: fully cold, lukewarm, runs out fast, rusty, smelly
- Any error codes on the display (tankless units)
- Whether the breaker trips or the pilot won't stay lit
- Where the heater sits — garage, closet, attic, basement (affects replacement logistics)
Not quite your problem?
| One fixture cold, others fine | Could be a fixture issue — describe it on the call in San Antonio → |
| Water pooling under the heater | Leaking water heater in San Antonio → |
| No water at all, hot or cold | Possible supply problem in San Antonio → |
No Hot Water in San Antonio — FAQs
How long do water heaters last in San Antonio?
Tank or tankless for a San Antonio home?
Repair or replace my water heater?
How long does replacement take?
More San Antonio plumbing guides
Main Water Shutoff Valve
You don't know where your main shutoff is (most common 'symptom').