1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace
3" CAMSTAT ADJUSTABLE FAN OFF TEMPERATURE F90-F120 AND LIMIT SWITCH UPGRADE 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" CAMSTAT ADJUSTABLE FAN OFF TEMPERATURE F90-F120 AND LIMIT SWITCH UPGRADE 3 High Limit Control Switches

BCFURNACE

543-503

CA$261.03

+5% Tax • Shipping calculated at checkout.

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

Name

3" CAMSTAT ADJUSTABLE FAN OFF TEMPERATURE F90-F120 AND LIMIT SWITCH UPGRADE

2units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

Not sure this fits your furnace? Call us — we're happy to help

Product Details

Description

Optimize your heating system's efficiency and safety with this 3-inch Camstat Adjustable Fan Off and Limit Switch Upgrade. This high-performance HVAC component provides precise control over your furnace blower operation, featuring a customizable fan-off temperature range between 90°F and 120°F. Built to function as both a fan controller and a safety high-limit switch, it ensures your heating unit operates within safe thermal parameters, preventing overheating and extending the lifespan of your equipment. Whether you are performing a routine furnace tune-up or upgrading an older system, this reliable thermal switch is a critical part for maintaining consistent airflow and reliable temperature management in forced-air heaters.

Specifications

Type
High Limit Control Switch
Size
3-inch insertion depth
Dimensions
3 in
Application
Forced-air furnaces, residential heating systems, and commercial HVAC equipment requiring thermal fan control and high-limit safety protection.
Specifications
Adjustable Fan Off Range: 90°F to 120°F; Dual function Fan/Limit control; Standard 3-inch insertion depth; Camstat-style adjustable settings.

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 543-503 a genuine OEM part?
Yes, the 543-503 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 543-503 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (543-503) 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 543-503 shipped?
Most 3 Limit Switches including the 543-503 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 543-503 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 543-503 is in stock before visiting.

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