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What Does The Color Of Your Furnace’s Pilot Light Mean?

January 19th, 2023 by eshoop

pilot light and blue flames inside a furnace.

There are some subtle ways your furnace can let you know something is wrong. One of these ways is by the color of your pilot light. It’s important to pay attention to these signs your furnace needs professional attention. That way, you can take action sooner rather than later. Plus, it’s vital to know when to call an HVAC professional with anything involving your pilot light or gas.

Blue Is Normal

This is what you want to see with a furnace’s pilot light color. It means you are getting enough fuel to operate. The blue hue comes from methane. There may be some red or orange that’s visible here and there. Don’t worry, though. This is normal.

Any Other Colors Are Reason Enough to Give Us a Call

If you’re noticing dominant colors such as red, green, or orange, it’s time to call an HVAC professional. What this means is you have another chemical burning in your furnace other than methane. It’s usually caused by dust, debris, or an accumulation of tar. The issue here is that you’re not burning clean natural gas for your furnace. The danger here is you could release dangerous chemicals into your home when your furnace is on.

What If You See a Different Color Flame?

If you notice a color other than blue in your pilot light, turn your furnace off and give us a call. Also, turn the valve off for your gas that connects to your furnace. It helps to err on the side of caution in case the issue is a gas leak. You don’t want to take any chances with natural gas.

How Can You Prevent Pilot Light Issues?

Regular cleanings help reduce debris, dust, and tar accumulation. This is something that a professional should do. This is because these parts transport chemicals and send gas to your pilot light. A good rule of thumb to follow is have your furnace checked at least once a year. This is especially helpful if you have an older heating system.

Call Us Today

Thornton Heating is the company to call on when you have pilot light concerns. We’re also at your service if you prefer to be proactive with furnace maintenance. We can also check the color of your pilot light during a routine check of your furnace. Contact an HVAC professional from our team today if you have furnace issues.