1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace
YORK/ETC DUAL AIR PRESSURE SWITCH 1.05" WC / 0.40" WC Air Pressure Switch, Air Proving 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

YORK/ETC DUAL AIR PRESSURE SWITCH 1.05" WC / 0.40" WC Air Pressure Switch, Air Proving

BCFURNACE

773-393

CA$310.16

+5% Tax • Shipping calculated at checkout.

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

Name

YORK/ETC DUAL AIR PRESSURE SWITCH 1.05" WC / 0.40" WC

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

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

Product Details

Description

This dual air pressure switch is a vital safety component designed for high-efficiency gas furnaces and HVAC systems. As a dual-stage air proving switch, it monitors the pressure differential created by the draft inducer blower, ensuring that the combustion process only begins when the system detects proper airflow and venting. Featuring two precise set points at 1.05" WC and 0.40" WC, this switch helps prevent hazardous conditions such as gas buildup or improper exhaust. If your heating system is failing to ignite, cycling incorrectly, or shutting down shortly after startup, a malfunctioning air pressure switch may be the cause. Replacing this part helps restore reliable furnace operation and maintains the safety and efficiency of your residential or light commercial heating unit.

Specifications

Type
Air Pressure Switch
Size
Standard HVAC component
Application
Used in multi-stage gas furnaces and HVAC heating systems to prove draft inducer airflow and ensure safe ignition sequences.
Specifications
Dual-stage set points: 1.05" WC (Water Column) and 0.40" WC; designed for air proving applications in forced-air heating systems.

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 773-393 a genuine OEM part?
Yes, the 773-393 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 773-393 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (773-393) 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 773-393 shipped?
Most Air Pressure Switches including the 773-393 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 773-393 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 773-393 is in stock before visiting.

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