1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace
PRESSURE SWITCH 0.18" 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

PRESSURE SWITCH 0.18" WC Air Pressure Switch, Air Proving

BCFURNACE

773-399

CA$98.58

+5% Tax • Shipping calculated at checkout.

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

Name

PRESSURE SWITCH 0.18" 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 professional-grade air pressure switch is a critical safety component designed for HVAC systems and gas furnaces. Often referred to as an air-proving switch, it monitors the pressure differential created by the inducer blower motor to ensure the system is venting combustion gases safely. With a precision-calibrated set point of 0.18" WC (Water Column), this switch acts as a safeguard, preventing the ignition sequence if proper airflow is not detected. If your heating system is failing to ignite or shutting down prematurely, a replacement pressure switch may be required to restore safe and efficient operation. This component is built for durability and high-cycle reliability in residential and commercial heating equipment.

Specifications

Type
Air Pressure Switch
Size
Small Component
Application
Used in gas-fired furnaces, rooftop package units, and light commercial heating systems to verify proper airflow and exhaust ventilation.
Specifications
Pressure Set Point: 0.18" WC (Water Column); Function: Air Proving and Safety Cut-off.

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 773-399 a genuine OEM part?
Yes, the 773-399 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 773-399 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (773-399) 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 773-399 shipped?
Most Air Pressure Switches including the 773-399 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 773-399 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 773-399 is in stock before visiting.

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