Air Flow Gurus

Igniting Warmth: The Ultimate Furnace Ignitor Troubleshooting Guide

Title: Troubleshooting a Bad Furnace Ignitor: A Comprehensive GuideA malfunctioning furnace ignitor can be a frustrating and inconvenient issue. Waking up to a cold house in the middle of winter is never pleasant.

Luckily, diagnosing and repairing a bad furnace ignitor doesn’t have to be a daunting task. In this article, we will provide you with a step-by-step guide to diagnosing and troubleshooting your ignitor issues.

From checking the thermostat and inducer motor to inspecting and replacing the ignitor, we’ll cover it all. So, let’s dive in and get your furnace up and running again!

Diagnosing a Bad Furnace Ignitor

Checking Thermostat and Inducer Motor

When faced with a furnace ignitor problem, it’s crucial to check the thermostat and inducer motor. These components can affect the ignitor’s performance.

Here’s what you need to do:

– Verify that the thermostat is set to the desired temperature and is functioning correctly. – Inspect the inducer motor to ensure it is running smoothly.

Any abnormal noises or signs of malfunction could indicate the need for further investigation.

Troubleshooting Electrical Issues

Electrical problems can often hinder the proper functioning of a furnace ignitor. To rule out these issues, follow these steps:

– Check the circuit breaker and ensure it hasn’t tripped.

– Verify if the on/off switch is in the correct position. – Inspect the chimney vent for any blockages that may lead to improper airflow.

Inspecting the Ignitor

Steps to Troubleshooting an Ignitor

Now that you’ve checked the thermostat, inducer motor, and resolved any potential electrical issues, it’s time to inspect the ignitor itself. Use the following steps:


Power off the furnace and allow it to cool down. 2.

Locate the ignitor, typically found near the burner assembly. 3.

Examine the ignitor for any visible cracks or damage. 4.

Use a multimeter to test the ignitor’s continuity and resistance. 5.

If the ignitor is cracked or shows inconsistencies during testing, it’s time for a replacement.

Replacement of Ignitor

Replacing a malfunctioning ignitor may require professional assistance. Consider the following factors:

– Contact a reputable furnace repair company for guidance and assistance.

– Inquire about the cost of the ignitor replacement and any additional charges. – If the situation calls for it, don’t hesitate to make an emergency call for immediate assistance.


Troubleshooting a bad furnace ignitor doesn’t have to be a daunting task. By following a systematic approach, you can diagnose and resolve the issue effectively.

Remember to check the thermostat and inducer motor before delving into the electrical aspects. Inspecting the ignitor itself is a crucial step, and if necessary, seek professional help for a smooth replacement process.

With these steps, you’ll be able to restore warmth and comfort to your home in no time. Stay warm and cozy!

Cost and Purchase of Ignitor

Cost of Furnace Ignitor Replacement

When faced with a bad furnace ignitor, one of the primary concerns is the cost of replacement. The total cost may vary depending on factors such as whether you opt for professional help or choose to tackle the repair yourself, as well as the specific type of furnace ignitor required.

Let’s delve into these aspects further:

Repair Costs and DIY:

If you have experience and confidence in your DIY skills, you can save money by replacing the furnace ignitor yourself. The cost of a new ignitor can typically range from $30 to $100, depending on the brand and model.

However, it is important to note that attempting a DIY repair without proper knowledge and experience can lead to further damage or safety hazards. If you are unsure about the process or lack the necessary tools, it is advisable to hire a professional furnace repair company.

Hiring a Furnace Company:

Hiring a furnace company ensures that the replacement is carried out by trained professionals. The cost of professional assistance may vary depending on factors such as the company’s rates, location, and any additional services required.

On average, professional labor charges can range from $100 to $300, depending on the complexity of the job and the specific company you choose. While this may seem like an added expense, it guarantees a proper and safe installation, giving you peace of mind.

Where to Buy a Furnace Ignitor

Now that you are aware of the potential costs of a furnace ignitor replacement, let’s discuss the available options for purchasing one. Consider the following:

Local Stores:

Many hardware stores and HVAC supply shops carry a variety of furnace ignitors.

Visit your local stores and inquire about their inventory. Bringing the old ignitor with you ensures that you find a suitable replacement, as different models may have specific requirements.

Additionally, the store staff can often provide advice and guidance based on their expertise. Online Options:

In today’s digital age, purchasing furnace ignitors online has become increasingly popular.

Online platforms such as Amazon, eBay, and specialized HVAC websites offer a wide range of options. When buying online, it is crucial to ensure you are purchasing from reliable sellers with positive reviews.

Read product descriptions carefully to ensure compatibility with your furnace model. Online purchases often offer the convenience of home delivery, saving you time and effort.

Universal Hot Surface Ignitors:

Another option to consider is a universal hot surface ignitor. These ignitors are designed to be compatible with a variety of furnace models, making them a convenient choice when a specific replacement is unavailable or hard to find.

Universal hot surface ignitors can often be found in stores and online, and they come with detailed instructions on installation.

Summary and Next Steps

Troubleshooting Summary

In summary, troubleshooting a bad furnace ignitor involves a systematic approach. Start by checking the thermostat settings, ensuring they are appropriate for your desired indoor temperature.

Proceed to inspect the draft inducer motor for smooth operation and investigate any electrical issues, such as tripped circuit breakers or incorrect switch positions. Finally, inspect the ignitor itself for visible cracks or damage and test its continuity and resistance using a multimeter.

Installing a New Ignitor

If the ignitor is found to be faulty, it needs to be replaced. Depending on your expertise and confidence, you can choose to replace it yourself or hire a professional furnace repair company.

Ensure that you have the necessary tools and consult the furnace’s manual for specific instructions. If opting for professional help, contact a reputable furnace company and inquire about their rates and availability.

By following these troubleshooting steps and considering the cost and purchase options, you are well-equipped to address a bad furnace ignitor effectively. Regardless of whether you choose the DIY route or hire professional assistance, the end goal remains the same: to restore warmth and comfort to your home.

Stay warm and cozy!

Popular Posts