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BCFurnace
3" HIGH LIMIT SWITCH L185-30F 3 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

3" HIGH LIMIT SWITCH L185-30F 3 High Limit Control Switches

BCFURNACE

543-185

CA$72.21

+5% Tax • Shipping calculated at checkout.

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

Name

3" HIGH LIMIT SWITCH L185-30F

7units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

Product Details

Description

This 3-inch high limit switch is a critical safety component designed for furnace and HVAC applications. It functions as a thermal cutout, monitoring the internal temperature of the heating system to prevent overheating and potential equipment damage. If temperatures rise above a safe threshold, the switch automatically interrupts the electrical circuit, protecting the furnace from excessive heat caused by restricted airflow or blower failure. Once the unit cools, the switch resets to restore normal operation. This durable, high-performance control is essential for ensuring the safe and efficient performance of residential forced-air heating systems.

Specifications

Type
High Limit Control Switch
Size
3-inch probe
Dimensions
3 in
Application
Commonly used in forced-air furnaces and HVAC heating units as a primary safety thermal limit control.
Specifications
185°F trip temperature with a 30°F automatic reset differential.

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Frequently Asked Questions

Is the 543-185 a genuine OEM part?
Yes, the 543-185 is a genuine OEM replacement part manufactured by BCFurnace. We source all 3 Limit Switches from authorized distributors to ensure exact-fit compatibility. This 3 Limit Switches 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 543-185 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (543-185) 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 3 Limit Switches 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 543-185 shipped?
Most 3 Limit Switches including the 543-185 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 543-185 at your store?
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. 3 Limit Switches orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 543-185 is in stock before visiting.

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