Buyers GuideUpdated July 5, 2026
No hot water is one of the most disruptive plumbing problems you can face, especially with Wheeling's cold winters. In many local homes, a simple pilot light issue is all it takes to leave you with icy showers. Our crew sees this all the time in single-family houses built during the mid-20th century. Knowing how to safely relight and troubleshoot your water heater's pilot light can save time and keep your system running, but there are important steps and safety precautions to follow.
Why Water Heater Pilot Lights Go Out in Wheeling
In Wheeling, many homes still rely on older 40- or 50-gallon gas water heaters. These units use a standing pilot light, a small, constant flame, that ignites the main burner. Several factors can cause this flame to go out. Drafts from basement windows or nearby doors, dirt buildup on the thermocouple, or problems with the gas supply are all common triggers. Frozen vent lines are another problem during cold spells, particularly with our humid continental winters and frequent freeze-thaw cycles.
Steps to Safely Relight a Pilot Light in Your Home
If you've noticed cold water from taps or your shower, there's a good chance the pilot light has gone out. We always recommend consulting your manufacturer's instructions, as some newer models use electronic ignition and shouldn't be manually lit. For water heaters with a standing pilot, the process usually looks like this:
- Turn the thermostat to the lowest setting and switch the control knob to "off." Wait five minutes for any gas to clear.
- Find the access panel and locate the pilot assembly, this is usually at the base of the tank, near the burner.
- Turn the control knob to "pilot." Press and hold the knob or button to start gas flow to the pilot.
- While holding, use a long lighter or match to ignite the pilot. Hold the knob for about 30 seconds before releasing so the thermocouple can sense the heat.
- If the flame stays lit, turn the control knob to "on" and reset the thermostat to your desired temperature.
- If it won't stay lit after two tries, stop and call a professional. Do not keep trying, as unburned gas is dangerous.
We urge every homeowner to avoid relighting attempts if you smell gas or suspect a leak. Professional help is always safer in those cases.
Common Reasons a Pilot Won't Stay Lit
If you follow the relighting steps and the flame keeps going out, there's a deeper issue. The most common problem is a worn-out thermocouple, the safety device that senses the pilot flame. Dirt and soot buildup can also block the flame or interfere with the sensor. In older Wheeling homes, supply line corrosion, especially in properties with galvanized or aging gas lines, can restrict fuel flow to the pilot. Drafts from basements or utility rooms are another problem, particularly with homes near the Des Plaines River where foundation settling can shift venting or let cold air in.
Signs Your Water Heater Needs Professional Attention
Some warning signs call for a licensed plumber instead of another DIY attempt. Call for help if you notice:
- The pilot light won't stay on after several careful attempts
- You smell gas around the water heater or in the room
- You see corrosion or water pooling near the base of the tank
- The control valve or any pilot light part looks damaged or is leaking
- There is evidence of backdrafting or bad venting (soot, moisture, or rust near the vent)
These issues point to bigger safety or equipment problems. In these cases, repairs often go beyond relighting and may involve gas line checks, thermocouple replacement, or tank repairs. Our Water Heater Services cover all of these issues, including tankless units and upgrades for older homes.
Regular Maintenance Prevents Repeated Pilot Problems
Water heaters in the Chicago suburbs often see heavy use, especially during our cold season. Annual maintenance can prevent many pilot light failures. Our team checks for sediment buildup at the bottom of the tank, cleans the burner and pilot assembly, and tests the thermocouple. If you're seeing repeated issues, it may be time to consider repiping or replacing corroded supply lines, especially in homes with galvanized or cast iron pipes. Routine service also helps catch leaks before they turn into bigger problems, our crew offers full leak detection and repair to stay ahead of trouble.
Safety First When Dealing With Gas Appliances
Gas appliances demand respect. Even a small mistake can create a hazard. If your pilot light keeps going out, if you have to keep relighting it, or if you notice hissing sounds or gas smells, shut off the main supply valve and call for help. Our crew is trained for safe gas line service and can track down the source of recurring pilot issues. Regular inspections make a difference, especially for homes in Wheeling with older infrastructure. We also handle related repairs like drain cleaning to address any problems that might connect to your hot water system's venting or drainage setup.
If your water heater is leaving you in the cold or you keep running into pilot light trouble, our team is here for Wheeling homeowners. Call 224-313-0317 and we'll help you get your hot water back on safely and quickly.