Flame Sensor Flame Sensor Rods
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Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours
Not sure this fits your furnace? Call us — we're happy to help
Ensure your heating system operates safely and efficiently with this high-quality Flame Sensor Rod. Designed as a critical safety component for gas furnaces and HVAC units, this sensor detects the presence of a flame once the burner ignites. If the sensor fails to detect a flame, it signals the control board to shut off the gas valve, preventing hazardous gas buildup. Common signs that your flame sensor needs replacement include the furnace starting and then immediately shutting down (short-cycling) or visible soot and oxidation on the rod. Constructed with a durable stainless steel probe and a high-temperature ceramic insulator, this replacement part provides reliable performance and helps extend the life of your heating equipment. Ideal for DIY furnace repair and professional HVAC maintenance to restore consistent heat during cold months.
Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.
1-778-759-9864Mon–Sat 8AM–5PM PT · Or email parts@bcfurnace.com
Compatible parts and related replacements
Yes, the 121-103 is a genuine OEM, or a factory replacement manufacturer approved part. We source all Flame Sensor Rods from authorized distributors to ensure exact-fit compatibility. This Flame Sensor Rod is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
The easiest way is to match the part number (121-103) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible Flame Sensor Rods for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
Most Flame Sensor Rods including the 121-103 ship within 1–2 business days from our warehouse. We ship across Canada and the United States, and worldwide, with tracking on every order. For urgent furnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Flame Sensor Rods orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 121-103 is in stock before visiting.
Still not sure this is the right part? Call 1-778-759-9864 and we will check your model number with you.
The model number is on the rating plate inside the furnace door.
Many more not shown. Check your own model number above.
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