1-778-759-9864
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BCFurnace
3" HIGH LIMIT SWITCH L155-30F 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 L155-30F 3 High Limit Control Switches

BCFURNACE

543-155

$52.00

+5% Tax • Shipping calculated at checkout.

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

Name

3" HIGH LIMIT SWITCH L155-30F

5units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

Product Details

Description

Ensure the safety and efficiency of your heating system with this premium 3-inch furnace high limit switch. Designed as a critical safety component for residential gas furnaces, this limit control sensor monitors the air temperature within the heat exchanger. If internal temperatures exceed the safe threshold, the switch automatically interrupts power to the gas valve or ignition system to prevent overheating and potential equipment damage. Once the furnace cools to a safe operating temperature, the switch resets to allow for normal heating cycles. This durable replacement part is essential for maintaining proper furnace airflow safety and protecting your home from HVAC-related hazards. It is a vital component for restoring reliable performance to forced-air heating systems.

Specifications

Type
Furnace High Limit Control Switch
Size
3-inch insertion depth
Dimensions
3 inches
Application
Used in residential gas furnaces and forced-air heating systems as a primary safety limit control to prevent heat exchanger overheating.
Specifications
Cut-out Temperature: 155°F; Differential: 30°F; Configuration: Opens on temperature rise (Normally Closed); Reset Type: Automatic reset.

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Frequently Asked Questions

Is the 543-155 a genuine OEM part?
Yes, the 543-155 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 543-155 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (543-155) 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 543-155 shipped?
Most 3 Limit Switches including the 543-155 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 543-155 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 543-155 is in stock before visiting.

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