1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace
Switch, Blower Door Blower Motors, Fan, Run Capacitors 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

Switch, Blower Door Blower Motors, Fan, Run Capacitors

BCFURNACE

040-439

CA$17.45

+5% Tax • Shipping calculated at checkout.

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

Name

Switch, Blower Door

1units 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

This high-quality Blower Door Switch is a vital safety component designed for modern HVAC systems, including high-efficiency furnaces and air handlers. Functioning as a safety interlock, this switch ensures that power is cut to the blower motor and internal electrical components whenever the blower compartment door is removed or not fully seated. This prevents accidental contact with moving fan blades or high-voltage parts during maintenance. If your furnace or air handler fails to start despite proper thermostat settings, a faulty or damaged door switch is a common culprit. Replacing a worn interlock switch is essential for maintaining the safe and reliable operation of your home's heating and cooling system.

Specifications

Type
Blower Door Interlock Switch
Size
Small
Application
Residential HVAC units, forced-air furnaces, and air handlers requiring a safety interlock for the blower access panel.
Specifications
Momentary contact safety switch; cuts power to the blower assembly upon door removal; designed for high-cycle reliability.

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 040-439 a genuine OEM part?
Yes, the 040-439 is a genuine OEM replacement part manufactured by BCFurnace. We source all Blower Motors & Capacitors from authorized distributors to ensure exact-fit compatibility. This Blower Motors & Capacitors 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 040-439 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (040-439) 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 Blower Motors & Capacitors 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 040-439 shipped?
Most Blower Motors & Capacitors including the 040-439 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 040-439 at your store?
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Blower Motors & Capacitors orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 040-439 is in stock before visiting.

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