
Tankless Water Heater Repair in Schertz, TX
Tankless water heater repair in Schertz, TX for gas and electric units that have stopped keeping up. The cause is found, the repair is quoted in writing, and the unit is run hard before we leave.
- Run at full demand before we go
- Error history read first
- Gas and electric units
Fault found first
The code, the stored history and each suspect part are tested before anything is ordered.
Price agreed in writing
Parts and labor go on a written quote, and nothing starts until you approve it.
Licensed local techs
Repairs by licensed technicians who work in your part of town.
Tankless units only
One specialty: gas and electric tankless heaters that stopped doing their job.

Tankless Units in Schertz Homes
Most Schertz homes are brick houses where the tankless sits in the garage or on an outside wall. The February 2021 freeze showed how fast exposed lines can split here.
What we run into in Schertz
- Freeze damage. Freeze protection keeps the inside of a unit safe, not the exposed pipes under it. Uninsulated lines are where winter damage usually starts.
- Retrofit installs. Plenty of units here were fitted into older homes after the fact, and an undersized gas line or a long vent run can cause ignition faults years later.
About 43,128 people live in Schertz, across ZIP code 78154, and all of it is on our route: 78154.
Call (380) 273-8196Tankless Problems We Fix Around Schertz
Most requests for tankless water heater repair in Schertz, TX start with one of the symptoms below, and most end with a single part or a descale.

Unit won't light
No ignition usually means gas pressure, a worn igniter, a dirty flame rod or a blocked vent. Each is tested.

Water under the unit
Drips come from service valves, fittings, the relief valve, the condensate line or the heat exchanger itself.

Code 10 or E110
An air or exhaust code stops the burner for safety. The intake and exhaust are cleared and checked.
Error code keeps coming back
A reset only clears the symptom. Repeated ignition or exhaust codes need a visit.
Hot, then cold, then hot
A short cold burst after the tap reopens is normal start-up. Swings during one shower point to low flow, scale or a failing flow sensor.
Not as hot as it used to be
Scale on the heat exchanger, a weak gas supply or a thermistor reading wrong.
Can't tell which one you have? Read us the display and describe the water, and the likely fault comes back on the call.

Fix It or Retire It? Deciding in Schertz
Gas tankless units commonly last 20 years or more with flushing, so a single failed part rarely means a new heater. A failed exchanger outside its warranty, on a unit past 15 years, is where replacement starts to win.
Not sure which side of the line you are on? Call (380) 273-8196 with the brand, the age on the label and the code. You will hear whether a repair makes sense before anyone comes out.
Call (380) 273-8196Estimated Repair Costs in Schertz
A typical bill for tankless water heater repair in Schertz, TX is estimated at $150 to $800. These are estimates, not quotes, and an exchanger replacement sits higher at an estimated $1,000 to $2,500.
Diagnosis & code check
- Model and serial noted for warranty
- Flow, filter and venting checked
- Gas pressure measured under load
Repairs & descaling
- Flow sensor or thermistor swapped
- Igniter, flame rod or sensor replaced
- Isolation valves added for flushing
Heat exchanger & major parts
- Warranty part claimed where it applies
- Combustion checked after the swap
- Honest word if a new unit is the better spend
Need Tankless Water Heater Repair in Schertz, TX? Call Today
A code that keeps returning after a reset is the unit asking for a proper look.
Schertz Homes by the Numbers
With electricity the main heating fuel in Schertz (about 82% of homes), many tankless units here are electric, and their faults are elements, breakers and sensors rather than burners. With a median build year of 2001, homes in Schertz sit in the middle: plenty were retrofitted with tankless units, and plenty of those units are now old enough to need parts. About 78% of homes are owner-occupied and about 88% are single-family, so most repair decisions here are the homeowner's own.
Schertz covers about 33 square miles and holds roughly 43,128 residents, around 1,302 per square mile: spread out, with mostly detached homes on larger lots and longer runs between fixtures and the street. It is number 66 by population of the 322 Texas places on our service list.
Source: U.S. Census Bureau, American Community Survey 2019-2023 5-year estimates for Schertz, TX.
Where We Go in Schertz
About 43,128 people live in Schertz, across ZIP code 78154, and all of it is on our route: 78154.
- 78154
Nearby Cities We Serve
Tankless Water Heater Repair in Schertz, TX: FAQs

Question not covered here?
Call and ask. Someone who repairs tankless units answers, and the phone quote is free.
Call (380) 273-8196How much does tankless water heater repair in Schertz, TX cost?
Most repairs cost an estimated $150 to $800, depending on the part. Descaling alone is estimated at $150 to $350, and a heat exchanger at $1,000 to $2,500. Freeze repairs depend on what split, and are priced once the damage is seen.
Is there a reset button on a tankless water heater?
Many do it through power: switch the unit off, wait, switch it back on. That clears a code, but a code that comes back means a part needs attention.
Why is my tankless water heater not turning on?
Check for power at the outlet and that the gas valve is open. Beyond that it is usually low flow, a clogged inlet filter, a failed flow sensor or an ignition fault.
Why does my tankless water heater go hot then cold?
A second or two of cold after the tap reopens is normal start-up. If the water swings while it runs, look at low flow, scale or the flow sensor.

Book Your Schertz Repair Visit
A short call to (380) 273-8196, with the model and whatever the display shows, is usually all it takes to book.