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BCFurnace
3" HIGH LIMIT SWITCH L160-20F 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 L160-20F 3 High Limit Control Switches

BCFURNACE

543-042

CA$68.83

+5% Tax • Shipping calculated at checkout.

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

Name

3" HIGH LIMIT SWITCH L160-20F

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

Product Details

Description

Ensure your heating system operates safely with this 3-inch High Limit Switch. Designed as a critical safety cutoff for gas furnaces and HVAC units, this thermal sensor monitors the temperature within the heat exchanger to prevent overheating. The L160-20F model is engineered to trip and interrupt power to the burner if the internal temperature reaches 160 degrees Fahrenheit, protecting your equipment from heat-related damage and potential fire hazards. Once the unit cools by a 20-degree differential, the switch allows the system to resume normal operation. This high-limit control is a vital replacement part for maintaining furnace reliability and home safety in various forced-air heating applications.

Specifications

Type
High Limit Control Switch
Size
3-inch probe length
Dimensions
3 inches
Application
Used in residential gas furnaces and forced-air heating systems to monitor heat exchanger temperatures and provide high-temperature safety protection.
Specifications
Trip Temperature: 160°F; Reset Differential: 20°F; Switch Configuration: Normally Closed (NC); Mounting: Flange mount with 3-inch insertion depth.

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Frequently Asked Questions

Is the 543-042 a genuine OEM part?
Yes, the 543-042 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 543-042 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (543-042) 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 543-042 shipped?
Most 3 Limit Switches including the 543-042 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 543-042 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 543-042 is in stock before visiting.

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