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BCFurnace
3" HIGH LIMIT SWITCH L135-30F 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 L135-30F 3 High Limit Control Switches

BCFURNACE

543-011

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 L135-30F

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

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Fast Delivery
Local Pickup

Product Details

Description

This premium 3-inch high limit switch is an essential safety component for residential furnaces and HVAC heating systems. Designed to monitor internal air temperatures, this thermal limit control acts as a critical fail-safe by automatically breaking the electrical circuit if the furnace heat exchanger reaches an unsafe temperature. Specifically calibrated to open at 135°F and reset once the temperature drops by 30°F, it prevents overheating, protects the heat exchanger from damage, and ensures the safe operation of your heating equipment. If your furnace blower runs continuously or the heating cycle cuts out prematurely, replacing a faulty high limit sensor is a common and necessary repair for maintaining home safety and system efficiency.

Specifications

Type
High Limit Control Switch
Size
3-inch probe
Dimensions
3 in
Application
Commonly used in forced-air furnaces, HVAC blower assemblies, and heating units as a safety cutout to prevent equipment overheating.
Specifications
Temperature Rating: Open at 135°F, Close at 105°F (30°F Differential); Mounting: Flange mount; Sensor type: Bimetal disc.

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Frequently Asked Questions

Is the 543-011 a genuine OEM part?
Yes, the 543-011 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 543-011 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (543-011) 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 543-011 shipped?
Most 3 Limit Switches including the 543-011 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 543-011 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 543-011 is in stock before visiting.

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