Gas Water Heater Repair: Common Problems and What to Do
Gas water heaters fail in a few predictable ways: pilot and thermocouple trouble, burner problems, venting issues and tank wear. This guide explains each so Lombard homeowners know what to expect.
(630) 403-0608Call to confirm availabilityHow a Gas Water Heater Works
A gas burner under the tank heats the water. A pilot light or electronic igniter lights the burner, a thermocouple confirms the flame and a gas valve controls the flow. A vent carries exhaust out of the home. When any one of these parts fails, the heater stops heating or shuts down.
Most Common Gas Water Heater Problems
| Problem | Likely cause |
|---|---|
| No hot water | Pilot out, bad thermocouple or failed igniter |
| Lukewarm water | Dirty burner, thermostat issue or sediment |
| Pilot keeps going out | Worn thermocouple or drafts |
| Yellow or sooty flame | Dirty burner or poor combustion air |
| Rumbling noise | Sediment hardened in the tank |
| Water around the base | Leaking tank or valve |
If you smell gas, leave the home and call your gas utility. Do not light or touch any switches.
Checks You Can Do Safely
- Confirm the gas supply valve to the heater is open.
- Look through the viewing window to see if the pilot is lit.
- Check the thermostat dial setting.
- Make sure other gas appliances in the home work.
- Check around the tank for moisture.
Repairs a Plumber Handles
A plumber can replace a thermocouple, igniter, gas control valve or relief valve, clean the burner and check venting. Gas work requires proper tools and safety checks, so it is not a DIY project. Our water heater repair service covers gas and electric tanks.
Repair or Replace a Gas Water Heater
A tank that leaks cannot be repaired. A unit nearing the end of its life that needs repeated service is often better replaced. A technician can compare the repair against replacement so you choose with the facts.
Gas Water Heater Help in Lombard
We repair gas water heaters for Lombard and nearby homes. Call (630) 403-0608 and describe the symptom, and we will explain the options and the next available visit.
Gas Water Heater Repair Questions
Why is my gas water heater not heating?
A pilot that is out, a bad thermocouple or a failed igniter are the usual causes.
Can I relight my own pilot light?
If the manual allows and you smell no gas, yes. If it keeps going out, the thermocouple likely needs replacement.
Why is my gas water heater making noise?
Sediment buildup is the typical cause. Flushing the tank can help.
Is a gas water heater repair an emergency?
A gas smell is an emergency. No hot water is urgent but not dangerous.
How long do gas water heaters last?
Often around eight to twelve years depending on maintenance and water quality.
Need Help With a Plumbing Problem in Lombard?
Call us and describe what is happening. We will explain the options and when we can visit.
Call (630) 403-0608