1-778-759-9864
United States (USD $) flagUnited States (USD $)
BCFurnace
3" HIGH LIMIT SWITCH L220-30F 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 L220-30F 3 High Limit Control Switches

BCFURNACE

543-003

$82.00

+5% Tax • Shipping calculated at checkout.

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

Name

3" HIGH LIMIT SWITCH L220-30F

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 3-inch high limit switch is a critical safety component designed for forced-air heating systems and residential furnaces. Functioning as a thermal cutout, this switch monitors the internal temperature of the heat exchanger or plenum. If the system exceeds a safe operating temperature, the switch automatically breaks the electrical circuit to prevent overheating and potential damage to the appliance. Once the temperature cools to a safe level, the internal bimetal disc resets, allowing the system to resume normal operation. Essential for DIY furnace repair and HVAC maintenance, this high-limit control ensures your heating equipment operates within manufacturer safety parameters, protecting your home from fire hazards and mechanical failure caused by restricted airflow or component malfunction.

Specifications

Type
High Limit Safety Switch
Size
3-inch insertion depth
Dimensions
3 in
Application
Commonly used in gas and electric furnaces, air handlers, and forced-air heating systems to monitor plenum temperature and provide high-heat protection.
Specifications
Standard 220-degree Fahrenheit cutout (L220) with a 30-degree Fahrenheit differential (30F) for automatic reset.

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 543-003 a genuine OEM part?
Yes, the 543-003 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 543-003 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (543-003) 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 543-003 shipped?
Most 3 Limit Switches including the 543-003 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 543-003 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 543-003 is in stock before visiting.

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