what causes a bad furnace ignitor?

Published on: March 20, 2024

When the cold winter months hit, having a functioning furnace is crucial to keeping your home warm and comfortable. One common issue that homeowners may face is a bad furnace ignitor. The ignitor is an essential component of a furnace as it is responsible for lighting the burner and starting the heating process. In this article, we will explore the potential reasons behind a faulty furnace ignitor and how you can address this issue to ensure your home stays cozy during the winter months.

What is a Furnace Ignitor?

Before diving into the causes of a bad furnace ignitor, let’s first understand what an ignitor is and its role in the heating system. A furnace ignitor is a small, yet crucial component that sits near the burner in your furnace. When the thermostat signals the furnace to start heating, the ignitor is responsible for generating a spark or heat to ignite the gas in the burner. Once the gas ignites, it produces heat that warms up the air circulated throughout your home.

Common Causes of a Bad Furnace Ignitor

There are several reasons why a furnace ignitor may fail, leading to a malfunctioning heating system. Some of the common causes include:

1. Normal Wear and Tear: Like any other component in your furnace, the ignitor can deteriorate over time due to regular use. As it ages, it may become less efficient at producing the necessary spark or heat to ignite the gas.

2. Physical Damage: The ignitor is a delicate part of the furnace, and it can be susceptible to physical damage caused by mishandling or accidental impact. Cracks or breaks in the ignitor can prevent it from functioning properly.

3. Buildup of Dirt and Debris: Dust, dirt, and other debris can accumulate on the ignitor over time, hindering its ability to generate the necessary spark. This buildup can prevent the ignitor from igniting the gas, resulting in a malfunctioning furnace.

4. Electrical Issues: Faulty wiring or electrical connections can also cause the ignitor to fail. If there is a problem with the electrical supply to the ignitor, it may not receive the power needed to ignite the gas.

5. Thermostat Malfunction: In some cases, a bad furnace ignitor may be a result of a faulty thermostat. If the thermostat is not sending the correct signals to the furnace, it may not trigger the ignitor to ignite the gas.

Addressing a Bad Furnace Ignitor

If you suspect that your furnace ignitor is the cause of your heating issues, it is essential to address the issue promptly to avoid further damage to your heating system. While some homeowners may attempt to replace the ignitor themselves, it is recommended to seek professional help to ensure the job is done correctly and safely.

Martino HVAC, a trusted HVAC service provider serving the Ontario, Canada region, has been in the business since 1987 and has built a reputation for providing reliable and efficient heating services. Their team of experienced technicians can diagnose the cause of your bad furnace ignitor and recommend the best solution to get your heating system back up and running smoothly.

In conclusion, a bad furnace ignitor can be a frustrating issue to deal with, especially during the cold winter months. By understanding the common causes behind a faulty ignitor and seeking professional help from experts like Martino HVAC, you can ensure that your heating system is in top condition to keep your home warm and comfortable. Don’t let a malfunctioning ignitor leave you in the cold – contact Martino HVAC today for all your heating needs in the Greater Toronto Area and surrounding regions.