How to Relight and Troubleshoot Water Heater Pilot Lights in Long Point

Buyers GuideUpdated June 14, 2026

Loss of hot water is inconvenient in any season, but a failed water heater pilot light can bring life in Long Point to a standstill, especially during the cold, snowy months we see here in central Illinois. Most older homes in the area still rely on traditional tank-style gas water heaters. When the pilot light goes out, showers run cold, dishes pile up, and laundry gets put on hold. Knowing what to do and when to call a licensed plumber makes a big difference for home comfort and safety.

Why Pilot Lights Go Out in Long Point Homes

Our team sees pilot light problems more often in homes with older water heaters, which are common throughout Long Point. Mineral buildup from moderately hard municipal water is a factor, as is dust and debris settling in the burner compartment over years of use. Drafts from basement windows, nearby sump pits, or even wind blowing in from crawl spaces can all blow out a flame. If your water heater uses natural gas, an interruption in supply or a faulty thermocouple are other typical culprits.

Is It Safe to Relight Your Own Pilot Light?

Every manufacturer sets specific safety steps for relighting, so always check the instructions on your tank first. In general, it's safe to relight if you don't smell gas and your unit isn't showing other warning signs. If you ever notice a strong gas smell, a hissing sound, or visible soot and scorch marks, that's when you should get help from a professional and not touch anything else. Many water heaters have a clear sticker with step-by-step relighting directions near the temperature dial or gas control valve.

Steps to Relight a Pilot Light

  • Turn the gas control knob to "OFF." Wait at least 5 minutes to let any residual gas clear.
  • Find the pilot assembly and the reset button. In Long Point's older homes, this is usually on the lower front of the tank, sometimes behind a small metal cover.
  • Set the knob to "PILOT." While holding the reset button, use a long fireplace match or a grill lighter to ignite the pilot. Some newer models use a piezo igniter button instead.
  • Continue holding the reset button for 30-60 seconds to heat the thermocouple. When you release it, the flame should stay lit.
  • Once the pilot stays on, turn the knob to "ON" and adjust the temperature as needed.

If you're unsure about any step or the pilot won't stay lit after a couple tries, contact a plumber before proceeding. Gas leaks or faulty components shouldn't be ignored.

Common Problems That Prevent a Pilot From Staying Lit

Sometimes the pilot light goes out repeatedly. The most common reasons we see in Long Point are:

  • Dirty thermocouple: A thermocouple covered in soot or scale can't sense the pilot flame and will shut off gas to the burner as a safety step.
  • Worn-out thermocouple: After years of constant heating and cooling, these sensors can fail and need replacement.
  • Clogged pilot tube: Dust, lint, or minerals from the water supply can partially block the tube, making lighting unreliable.
  • Drafts: Wind or air movement from open crawl spaces, basement windows, or a loose water heater door can blow out the flame.
  • Gas supply issues: If there's a problem with the gas line or valve, the pilot won't get enough fuel. This may require specialized repair.

If you're seeing these issues, our water heater services include cleaning, part replacement, and full diagnostics to get you back up and running safely.

Warning Signs That Need a Professional

  • You notice a strong sulfur or rotten egg smell near the water heater.
  • The pilot won't relight or repeatedly goes out no matter what you try.
  • You see scorch marks, melted insulation, or rust and corrosion near gas fittings.
  • Your unit is over 10-15 years old and the pilot problems keep returning.
  • Pop noises, rumbling, or water leaks from the tank, this could point to other problems that require expert help.

Don't ignore these signs. They could point to gas leaks, failing valves, or deeper issues with older plumbing. Sometimes, homes in rural Livingston County still have galvanized or cast iron piping that's begun to corrode, which can cause both gas line and water heater troubles. Our pipe repair & repiping can address aging supply lines, and leak detection & repair covers any water escaping from around your unit or connections.

Long Point's Unique Water Heater Troubles

Living in a rural, agricultural area with mid-century homes, we've found that water heaters here often run harder than in the city. Hard well water brings extra minerals that settle as sediment at the bottom of tanks. This can bury the pilot assembly in scale and make relighting more difficult. Freezing winters add another challenge, with pipes and tanks expanding and contracting as temperatures swing. Keeping an eye on your pilot light, anode rod, and temperature setting can extend the life of your equipment. When there's a persistent problem, our team tracks it to the source, whether it's a draft, a deteriorated thermocouple, or a mineral-clogged pilot.

Preventive care can help. Regular drain cleaning is important to avoid sediment clogs, and it's wise to consider sump pump services in damp basements, since excess moisture can cause rust and corrosion near your water heater. For bigger issues with gas supply or aging valves, we're equipped for gas line services to keep things safe and up to code.

Call Today for Professional Water Heater Help

If the pilot light on your water heater in Long Point keeps acting up, call our team at 779-217-8455. We handle troubleshooting, cleaning, and safety checks, so your home gets hot water back without a hassle.

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Frequently Asked Questions

Several reasons can cause this, including a dirty or failing thermocouple, a clogged pilot tube from mineral buildup, or drafts from nearby windows or crawl spaces. It could also be a problem with the gas supply or control valve. If it keeps happening, a plumber should inspect your unit.

It's safe if you don't smell gas and there are no signs of damage, like scorch marks, melted wires, or water leaks. Follow the instructions on your water heater exactly, and if you're unsure or notice anything unusual, call a licensed plumber.

If you have experience with this kind of repair and access to the right tools and replacement parts, you can try replacing the thermocouple yourself. If you're not comfortable or if the pilot light still doesn't stay lit after replacement, professional service is the safest route.

Yes, the moderately hard water locally can cause mineral deposits to build up inside the tank, sometimes blocking or partially covering the pilot assembly. Regular cleaning and flushing of the water heater helps reduce these issues and can keep your pilot light operating normally.

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