TroubleshootingUpdated June 18, 2026
A water heater with a stubborn pilot light can leave your Chicago Ridge home with cold showers, laundry headaches, and a lot of frustration. In our area, many homes have hot water tanks that are 10-20 years old, and older units tend to have more trouble with pilot lights. On top of that, cold Cook County winters put your water heater under extra stress. Our crew has spent decades working on all makes and models, so we know the common issues that keep those pilot flames from staying lit.
Why Water Heater Pilot Lights Go Out
In most gas water heaters, the pilot light is a small flame that ignites the main burner when your home needs hot water. When it goes out, you'll lose heat until it's properly relit and the cause is fixed. We see these common culprits in Chicago Ridge homes:
- Thermocouple failure (the safety sensor that tells the gas valve it's safe to stay on)
- Clogged pilot orifice from dust or debris
- Drafts or backdrafting, especially in basements with older windows or vents
- Improper gas pressure
- Faulty gas control valves
- Moisture from flooding, which can corrode parts (an occasional issue in clay-rich local soils or after heavy storms)
How to Safely Relight Your Pilot Light
You can relight a pilot light on most standalone tank water heaters if you feel comfortable following the unit's instructions. Every heater has a lighting label on the tank or the user manual. Here's the general process, but always verify for your specific model:
- Turn the gas control knob to "OFF" and wait at least 5 minutes for any gas fumes to clear.
- Locate the pilot (often behind a small metal panel at the base of the tank).
- Turn the knob to "PILOT" and press it down. Use a long match or igniter to light the pilot while continuing to hold the button for 30-60 seconds.
- Release the button. The pilot should stay lit. If it goes out immediately or keeps going out, there's a deeper problem.
- Turn the knob to "ON" if the pilot stays lit, then set your desired temperature.
If you smell gas or feel uncomfortable at any step, stop and call a professional. Gas leaks are serious and should be handled by licensed plumbers like us who work with gas line systems regularly.
Signs the Problem Is Bigger Than a Relight
A pilot light that won't stay lit often points to a bigger issue. Here are warning signs that call for professional service:
- Pilot flame is yellow or flickering instead of steady blue
- You notice a chemical or rotten egg smell (possible gas leak)
- Burn marks, soot, or corrosion on the burner assembly
- Repeated outages after relighting
- No hot water, even when the pilot looks normal
- Moisture, rust, or water stains around the base, check especially in homes with clay-rich soil and basement seepage
Older water heaters in our area often have worn-out thermocouples or gas valves. Some homes in Chicago Ridge have older galvanized or cast iron gas lines, which can affect gas pressure if corroded or partially blocked. In these cases, we can inspect and recommend next steps, whether it's water heater repair or replacement, or fixing an underlying gas supply issue.
Maintenance Tips to Prevent Pilot Light Problems
Regular upkeep is important to keep your water heater running safely. Our team always encourages Chicago Ridge homeowners to:
- Vacuum dust and cobwebs from around the tank base once or twice a year
- Check that combustion air vents aren't blocked
- Keep storage items away from the heater
- Use a licensed pro for annual maintenance and gas line checks
- Watch for early warning signs like rumbling, popping noises, or pilot light issues, and book an inspection if you notice them
Water hardness from Lake Michigan supply can also lead to sediment buildup at the tank's bottom. Flushing the tank once a year helps prevent burner and pilot problems. If you've got persistent leaks or moisture near the water heater, you may also need leak detection and repair to keep everything dry.
When Pilot Light Issues Link to Other Plumbing Problems
Homes in the southwest suburbs of Chicago, especially those with basements, sometimes have several plumbing issues at once. For example, if your pilot keeps going out after a heavy rain and you spot water around the tank, there might be seepage due to the area's flat clay-rich soil. In this case, you may also need sump pump service to protect your home, as wet conditions and water heater failures often go hand in hand.
If your home is over 50 years old, upgrading old pipes may prevent further gas flow issues. We handle full pipe repair and repiping jobs for aging systems that affect both gas and water lines.
How We Help Chicago Ridge Homeowners
If your pilot light keeps going out and your water stays cold, our licensed crew is ready to diagnose and fix it. We handle water heater servicing, part replacements, and tank upgrades for homes across Chicago Ridge. If you need quick troubleshooting, safe relighting, or a full inspection, reach us any time at 708-847-6710. We're here to keep your hot water running and your home safe all year.