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A Step-by-Step Guide to Cleaning Your Furnace Flame Sensor

Is your furnace acting up, leaving you in the cold? One common issue that can cause heating problems is a dirty flame sensor. But don't worry, you can fix it yourself with a little know-how and some basic tools. In this step-by-step guide, we'll walk you through the process of cleaning your furnace flame sensor to keep your home warm and cozy.

What You'll Need:

  1. Screwdriver

  2. Fine-grit sandpaper (400-600 grit)

  3. A clean, dry cloth

  4. Safety goggles and gloves

Step 1: Safety First
Before you begin, ensure your furnace is powered off at the breaker. Safety goggles and gloves are a must to protect your eyes and hands.

Step 2: Locate the Flame Sensor
The flame sensor is usually located near the pilot light or burner assembly. It's a small, rod-shaped device with a single wire connected to it.

Step 3: Remove the Sensor
Use your screwdriver to carefully remove the screw holding the flame sensor in place. Gently pull the sensor out, taking care not to damage the wire. 

Step 4: Clean the Sensor
Take the sandpaper and gently sand the sensor's surface to remove any carbon buildup or soot. 

Step 5: Reinstall the Sensor
Once the sensor is clean, carefully reinsert it into its original position and secure it with the screw.

Step 6: Power On the Furnace
Turn the furnace back on at the breaker and observe its operation. If the flame sensor was the issue, your furnace should now work correctly.

Step 7: Regular Maintenance
To prevent future issues, make a habit of inspecting and cleaning your flame sensor annually.
When to Call in the Pros -
  If you're uncomfortable performing these steps or if your furnace continues to malfunction after cleaning the flame sensor, it's time to call in the experts. Henries Heating and Air specializes in HVAC services, including furnace repair and maintenance. Our experienced technicians are ready to assist you and ensure your home stays warm and comfortable. Don't hesitate to reach out to us for professional help.

Now you're equipped with the knowledge to clean your furnace flame sensor and keep your home cozy during the colder months. Stay warm, and if you ever need further assistance, remember that Henries Heating and Air is just a call away!

Trust the experts at Henries Heating & Air to handle all of your heating and air conditioning needs. Contact us today to schedule a free estimate for your project.

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