HVAC REPAIR: Why Your Furnace Pilot Light Keeps Going Out

Most furnaces, until around 2010, used pilot lights that were continuously burning, igniting the burners during the heating cycle. New furnaces don’t have pilot lights, but many older homes still come with constant flame/ “standing pilot” heating systems. Most of the time, issues with these systems can be fixed.

If your furnace has a pilot light, you probably had to re-light it more than once. It’s important to understand why pilot lights keep going out, and how to fix it.

Some reasons why your furnace pilot light keeps going out: 

1. There’s a problem with the pilot orifice.

Debris, or any form of blockage or buildup, can disrupt the pilot light’s operation. If you notice any flickering, or yellow flame (instead of hotter blue) at the base of the flame, there’s probably a buildup.

2. There’s a problem with the thermocouple. 

This is a very common reason why your pilot light keeps going out.

Thermocouples are copper rods assisting the pilot light in keeping your furnace operating and safe. Like other parts of the furnace, a thermocouple can deteriorate over time, and eventually require replacement. This isn’t always the case, though. Sometimes, the thermocouple may just be off-center or dirty.

3. Your gas regulator isn’t working properly 

This doesn’t happen often. However, if the gas regulator outside your home isn’t working properly, it can negatively impact your appliances that use gas.

This is likely the case if the pilot light is also out in another household device, such as the water heater.

It’s best to call your gas company to address the issue.

4. Drafts blow the pilot light out. 

If there were leaks in your ductwork, or if your return air supply isn’t properly sized, it may result in an airflow that can blow a pilot light out. You’ll need a professional to inspect and fix the issue.

How to re-light the pilot light:

Unless you’re dealing with leaks and damaged parts, you can attempt to fix the issue on your own.

1. Check your furnace’s manual/ use it to locate the pilot light.
2. Turn the gas off. Wait for at least 5 minutes before turning it back on.
3. Re-light the pilot light.

HVAC Repair Near Me: Fix furnace issues quickly and efficiently 

The importance of a fully functional furnace can’t be stressed enough. With a properly maintained unit, you’re less likely to find yourself without heat when you need it the most. Otherwise, any furnace problem can disrupt your daily routine.

If your furnace pilot light keeps going out and you can’t fix it a Good Guy can help. We’ll get to the bottom of the problem right away, and complete the necessary repairs ASAP. We see to it that you won’t have to deal with the same problem anytime soon.

Our experienced furnace technicians install, maintain, repair, and replace HVAC systems quickly and efficiently. Since 2014, we’ve helped thousands of homeowners like you, and we’re great at what we do.

For all your furnace installation and repair needs, book us through the Good Guys Home Services Mobile app or fill out our online form for faster service.