1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace
YORK/ETC LIMIT SWITCH L140 100F(O/C),SPST,AUTORESET Fan Disc, High Limit Control Switches furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

YORK/ETC LIMIT SWITCH L140 100F(O/C),SPST,AUTORESET Fan Disc, High Limit Control Switches

BCFURNACE

120-638

CA$47.95

+5% Tax • Shipping calculated at checkout.

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

Name

YORK/ETC LIMIT SWITCH L140 100F(O/C),SPST,AUTORESET

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

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Fast Delivery
Local Pickup

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

Product Details

Description

This premium HVAC high limit switch is a critical safety component designed to monitor and regulate internal temperatures within furnace and air handling units. Engineered as a fan disc control, this switch prevents system overheating by automatically breaking the electrical circuit when temperatures reach the 140°F limit and resetting once the system cools to 100°F. Featuring a Single Pole Single Throw (SPST) configuration, this auto-reset switch ensures reliable operation and protects your heating equipment from thermal damage. It is an essential replacement part for restoring proper furnace cycles and ensuring safe, consistent airflow in residential and light commercial heating systems.

Specifications

Type
High Limit Control Switch
Size
Small
Application
Used in HVAC systems, forced-air furnaces, and air handlers to provide over-temperature protection and fan cycle control.
Specifications
Temperature Rating: Opens at 140°F, Closes at 100°F (L140-100); Circuitry: Single Pole Single Throw (SPST); Reset Type: Automatic; Switch Type: Normally Closed (O/C)

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 120-638 a genuine OEM part?
Yes, the 120-638 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 120-638 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (120-638) 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 120-638 shipped?
Most Fan Limit Controls including the 120-638 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 120-638 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 120-638 is in stock before visiting.

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