What happens if pilot light keeps going out?

Author: Destin Jaskolski  |  Last update: Saturday, June 13, 2026

Some of the possible serious reasons for pilot lights to go out include loose or broken gas valves, thermocouples or heat exchangers, faulty venting, low gas pressure, or high winds. If you believe there is a serious problem, don't hesitate to contact a professional.

How do you fix a pilot light that keeps going out?

How To Re-Light A Furnace Pilot Light ?
  1. Step 1: Review Furnace Manual. ...
  2. Step 2: Identify Pilot Light. ...
  3. Step 3: Turn OFF Gas. ...
  4. Step 4: WAIT 5 Minutes, then Turn Gas to "Pilot" ...
  5. Step 5: Hold Reset Button. ...
  6. Step 6: Press The Igniter While Holding The Reset Button. ...
  7. Step 7: Turn Gas to "ON" position.

Is a pilot light going out an emergency?

Safety Considerations for Pilot Light Issues

If you smell gas or notice unusual sounds when your indicator flame goes out, leave your home immediately and contact emergency services. These signs could indicate serious safety concerns that require immediate professional attention.

How much does it cost to relight a pilot light?

The Cost of Relighting the Pilot Light

A plumber can help reignite the pilot light. They will charge you an hourly fee of $40 to $150. This is usually a fairly brief project, and may just take an hour.

How to keep pilot light from blowing out?

Your water heater requires air to keep the pilot light burning. Otherwise, the flame goes out. Ensure that the water heater is not surrounded by clutter, lint, or debris to increase the amount of combustible air. Keep the surrounding area as clean as possible.

TOP 10 Reasons Why the Gas Pilot Light Goes Out & Won't Stay Lit!

Should I worry if the pilot light goes out?

Is It Dangerous if The Pilot Light Goes Out? The worry here is that when a pilot goes out, the gas valve that supplies the fuel for the pilot flame could still be pumping gas. This can mean a buildup of gas, and when the pilot is relit or relights itself, it could result in a very serious explosion.

Is it easy to replace a thermocouple?

Replacing a thermocouple is a relatively easy fix that can take less than two hours. This guide reviews how to replace a thermocouple to ensure gas appliances stay in good working order, as well as how to relight a pilot light.

Is it safe to relight your own pilot light?

It's important to allow a bit of time to pass from turning off the pilot before attempting to relight it. This lets the gas dissipate from the chamber so you don't ignite excess gas when relighting the pilot light. A minute to two minutes is sufficient.

Who do you call to relight a pilot light?

Call Your Local Mr. Rooter Plumber! If you are having trouble getting your water heater pilot light on, or you can't get it to stay lit for long, rely on a plumbing professional for water heater repair, maintenance, and replacement services.

Can a pilot light go out on its own?

Sometimes a pilot light can go out as a result of some source of wind or air simply blowing it out. If this happens, there could be an issue with how your flue pipe is set up or how your system is venting. Free Furnace Promotion: Replace your air conditioner and get a FREE Trane furnace*!

Who to call if pilot light keeps going out?

Calling a reputable HVAC company is usually the best way to fix a pilot light that keeps going out. Sometimes, there are causes you can fix yourself. If there is a draft nearby that is blowing out the light, for example, you can locate the source and find a solution. That can be as simple as closing a window.

Will gas leak if the pilot light goes out?

In many systems, a broken pilot light will prevent the appliance from working at all. This is a safety precaution to prevent a buildup of excess gas in the unit, which can be dangerous for you and your family, potentially leading to a gas leak.

What does a damaged thermocouple look like?

Failed Thermocouple Symptoms

The first is signs of contamination on the tube, which can include discoloration, cracks, or pinholes. Next, check the wiring for any signs of wear or corrosion like missing insulation or bare wire.

What blows out a pilot light?

Improper Venting or Air Supply

The air around a pilot light impacts how it functions. Air moving around the flame can disrupt it or blow it out entirely.

How do I know if my thermocouple is bad?

There's really just one telltale sign of letting you know when the thermocouple isn't working, and that's when the pilot light won't stay lit.

Why does my fire pilot light keep going out?

If your gas fireplace pilot light keeps going out, you may have a problem with faulty pilot controls. The pilot control failing due to age or a mechanical issue can cause your pilot light to keep going out and prevent it from being relit.

What to do if pilot light won t relight?

How to Fix Your Pilot Light
  1. Find your gas valve. ...
  2. You need to turn the valve to the off position for at least three minutes.
  3. Once you have had the valve at off for a few minutes, switch it over to pilot setting.
  4. You will need a match that is lit. ...
  5. Set the pilot valve to the on position.

Can I manually light my pilot light?

If you don't see a spark when you press the igniter button or you can't get the pilot to light, you can try to manually light it with a match or stick lighter. Once you see the pilot flame, you will need to continue to hold the control knob in for around 30 seconds.

Can I relight the pilot light by myself on the water heater?

While holding the gas control knob, repeatedly press the ignite button until the flame stays lit. While holding in the gas control knob, press the ignitor button (this is typically a square button and should be clearly labeled). Click the ignitor button about one time every second. You should hear it click.

Is it OK to leave a pilot light out?

A: Yes, turning off the pilot light when the fireplace isn't in use, such as during the warmer months, can help save energy and reduce your gas bill.

Is it expensive to leave pilot light on?

A fireplace pilot light might consume about 24,000 BTU per day, adding up to about 720,000 BTU a month, or 7.2 therms. If you're paying $1 per therm, then leaving the pilot light on all the time throughout a month might cost you around $7 per month and $84 per year.

Why wont my furnace pilot light stay lit?

Your Gas Valve Needs Attention

The gas valve on your furnace delivers the gas your pilot light needs to remain lit. If the valve is turned ON, but your pilot light won't stay lit, the problem might be a broken gas valve. The solution most likely will be to replace the valve.

Will the pilot light go out if the thermocouple is bad?

The Pilot Lights But Won't Stay Lit

If the flame lights and goes out when you release the gas control knob after holding it in for the recommended 20 to 30 seconds, that's the sign of a thermocouple malfunction.

Why does my pilot light keep going out after replacing thermocouple?

Once you have replaced the thermocouple, turn on the furnace and check to see if the pilot light stays lit. If your pilot light doesn't stay lit, it may be due to something blocking the thermocouple. You can try cleaning or replacing it, but if that doesn't work, you may need to call a professional.

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