LIMIT SWITCH ASSEMBLY Fan Disc, High Limit Control Switches
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Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours
This Limit Switch Assembly is a vital safety component engineered for gas furnaces and residential HVAC systems. Functioning as a high limit control switch, it monitors the temperature within the furnace cabinet to prevent overheating. If internal temperatures reach a dangerous threshold—often caused by issues like a malfunctioning blower motor or a clogged air filter—this fan disc switch automatically shuts down the burners to ensure safe operation. Replacing a faulty limit switch is essential for maintaining the longevity of your heating system and ensuring home safety. This durable thermal cutout is designed for reliable performance and precision temperature sensing in modern central heating equipment.
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 040-688 is a genuine OEM, or a factory replacement manufacturer approved part. We source all Fan Limit Controls from authorized distributors to ensure exact-fit compatibility. This Fan Limit Control 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 (040-688) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible Fan Limit Controls for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
Most Fan Limit Controls including the 040-688 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. Fan Limit Controls orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 040-688 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.
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