1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace

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BCFURNACE

040-688

CA$31.45

+5% Tax • Shipping calculated at checkout.

U.S. Duties/Taxes, if applicable, may be due at time of delivery.

Name

LIMIT SWITCH ASSEMBLY

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

Not sure this fits your furnace? Call us — we're happy to help

Product Details

Description

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.

Specifications

Type
High Limit Control Switch
Size
Small
Application
Designed for use in residential gas furnaces and high-efficiency HVAC units to regulate internal heat exchanger temperatures and provide emergency safety shut-off.
Specifications
Thermal disc sensing technology, fixed temperature safety cutout, automatic reset functionality, heat-resistant housing.

Not sure this is the right part?

Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.

1-778-759-9864

Mon–Sat 8AM–9PM PST · Or email parts@bcfurnace.com

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Frequently Asked Questions

Is the 040-688 a genuine OEM part?
Yes, the 040-688 is a genuine OEM replacement part manufactured by BCFurnace. We source all Fan Limit Controls from authorized distributors to ensure exact-fit compatibility. This Fan Limit Controls is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
How do I know if the 040-688 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (040-688) with your furnace model number. Visit the BCFurnace page on our site 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.
How fast can I get the 040-688 shipped?
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 with tracking on every order. For urgent BCFurnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
Can I pick up the 040-688 at your store?
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.

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