7 Reasons Your Water Heater Pilot Light Keeps Going Out

A pilot light that won’t stay lit is one of the most common issues with gas water heaters. It seems like a small inconvenience, but it points to underlying problems such as a faulty thermocouple, gas supply issues, or an aging system. Understanding the problem is important so you can decide whether it’s just a simple repair or an extensive job.

In this blog, you will learn the reasons behind the pilot light going off and whether you need a replacement for it. 

• The key highlights of the blog are:
• A faulty thermocouple is a leading cause of pilot light issues
• Dirt, drafts, and gas supply problems can disrupt the flame
• Older systems may need water heater pilot light replacement
• Repeated outages may indicate a larger system failure
• Professional help ensures safe and accurate repairs

If your water heater light keeps going out, it is a sign that something isn’t right. And while you might be tempted to ignore it, you must not, because it’s not just a light, but an indicator that all is not right with your water heater.

If you are unsure as to why it keeps happening and want to know the reasons, read this blog. It discusses the various reasons behind the problem and when to consider a water heater pilot light repair. 

The pilot light is a small flame that ignites the gas burner in your water heater. Without it, your system can’t heat water. If the pilot light repeatedly goes out, it disrupts the hot water supply and indicates safety or mechanical issues.



If you want consistent hot water, it must be functioning properly. And that’s why water heater pilot light repair is essential.

Check out the multiple reasons that cause the pilot light to go out repeatedly:

Faulty Thermocouple

The thermocouple is a safety device that detects whether the pilot light is on. If it fails, it shuts off the gas supply.

Fixing the thermocouple in the water heater is the only solution, and you will need a professional to do that.

Dirty or Clogged Pilot Tube

In households, it is most common for a pilot tube to go unexamined, even during routine cleaning. Over time, dust and debris accumulate and clog the tube, interrupting or weakening the flame.



Thus, clean your pilot tube to see if the pilot light starts working again. If it doesn’t, call a professional.

Drafts or Airflow Problems

Strong drafts from windows, vents, or poorly sealed areas can blow out the pilot light.



Ensure airflow issues are addressed. You can also reposition the water heater to deal with this

Low gas pressure or supply interruptions can cause the pilot light to go out.



It is a simple problem and has a simple solution- check gas valves. In many cases, it will fix the issue; if not, it’s time to call a technician.

A failing thermopile or gas control valve can interrupt the flow of gas to the pilot light.



It will require component replacement to keep the light working smoothly.

Sediment accumulation can affect overall system performance, indirectly causing pilot light issues.



Flush the tank and see if it helps. 

If your unit is 10-12 years older, repeated pilot light problems are an indicator that it’s time for a replacement. 



Consider a gas water heater pilot light replacement or a full system replacement to fix the issue.

Here are some easy steps to relight the pilot light:

• Turn the gas control knob to “off” and wait a few minutes
• Switch it to “pilot” mode
• Press and hold the reset button
• Light the pilot using a lighter or igniter
• Hold the button for about 30 seconds
• Release and check if the flame stays lit



If it doesn’t work even after repeated attempts, call for a professional.

In the following cases, calling a technician is a good idea:

• The pilot light keeps going out repeatedly
• You suspect a gas supply issue
• The thermocouple needs replacement
• You notice unusual smells or sounds
• You are unsure how to relight the unit safely

Search for “Professional to fix the water heater near me” and get a quick resolution.

• The unit is new
• The issue is limited to one component
• Repairs are affordable and infrequent
  

• The system is over a decade old
• Repairs are becoming frequent
• Energy efficiency has declined
• Multiple components are failing
  

To avoid recurring issues:

• Schedule regular maintenance
• Keep the area around the heater clean
• Check for drafts or ventilation issues
• Flush the tank annually
• Address minor issues early



Remember- prevention is better than cure. Invest in preventive care and save money on extensive repairs.

A pilot light is a smaller component of your water heater, but it directly impacts your comfort on chilly days. You might be tempted to ignore it, but it’s advisable to get prompt repair service, as a pilot light going out indicates that your system needs professional intervention.

Now that you know the reasons behind the problem, it’s time to call a technician.



Consult us at Garot Plumbing & Heating for any water heater-related issues. Whether you need a gas water heater pilot light replacement or a full system replacement, we are here for you.

Give us a call today!