1-778-759-9864
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BCFurnace

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BCFURNACE

040-684

$172.00

+5% Tax • Shipping calculated at checkout.

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

Name

PRESSURE SWITCH ASSEMBLY

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

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Local Pickup

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

Product Details

Description

Ensure the safe and efficient operation of your heating system with this high-quality Pressure Switch Assembly. Designed as a critical safety component for high-efficiency gas furnaces, this air proving switch monitors the pressure differential created by the draft inducer motor. It confirms that the exhaust flue is clear and that proper airflow is established before allowing the ignition process to begin. A failing pressure switch can cause your furnace to shut down or prevent it from starting altogether. Replacing a worn or malfunctioning air pressure switch is a common solution for restoring reliable heat and ensuring your HVAC system meets safety protocols. This assembly is built for precision and durability, making it an essential part for furnace maintenance and repair.

Specifications

Type
Air Pressure Switch
Size
Standard
Application
High-efficiency condensing gas furnaces and residential HVAC heating systems.
Specifications
Differential pressure sensing, diaphragm-actuated safety mechanism, heat-resistant construction, normally open electrical contacts.

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 040-684 a genuine OEM part?
Yes, the 040-684 is a genuine OEM replacement part manufactured by BCFurnace. We source all Air Pressure Switches from authorized distributors to ensure exact-fit compatibility. This Air Pressure 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 040-684 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (040-684) 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 Air Pressure 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 040-684 shipped?
Most Air Pressure Switches including the 040-684 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 040-684 at your store?
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Air Pressure Switches orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 040-684 is in stock before visiting.

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