TECH TIP OF THE MONTH- NOVEMBER: WHAT IS THE CORRECT FLAME COLOR ON GAS FURNACES?

By: Patricia Cermignano

 

Have you ever wondered what the correct flame color on a natural gas heater is? As part of keeping your heating system in good working condition, it is critical to check the color of your furnace’s pilot light flame (at the beginning of the heating season and sporadically throughout the cold winter months) to ensure that your gas furnace is running safely and efficiently.

 The normal flame color of a natural gas furnace is blue (with a tiny tip of yellow), as natural gas is mainly composed of methane which emits a blue color when burning. This strong blue flame indicates safe and efficient combustion of the gas in your heating system.

If you see a wavy flame that is any other color (red, yellow, orange, purple, green), this indicates that there is a potential issue with the combustion as a result of the gas not mixing correctly with the surrounding indoor air. This can lead to wasted energy, and worse, Carbon Monoxide leaking into the air. If you do not see a blue flame when checking your furnace’s pilot light, it is important to call a certified HVAC professional to have them check your system and make any necessary adjustments.

Our company recommends that you have maintenance performed to each of your heating systems at the beginning of each fall to ensure that your equipment is thoroughly cleaned and inspected before the weather turns cold. For information on our annual heating energy savings agreements, please download the form here or call our office at 610-642-6323 to schedule an appointment this season.