1-778-759-9864
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BCFurnace
LENNOX PRESSURE SWITCH DUAL PORT 0.40" WC, SPST 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

LENNOX PRESSURE SWITCH DUAL PORT 0.40" WC, SPST Air Pressure Switch, Air Proving

BCFURNACE

773-357

CA$166.64

+5% Tax • Shipping calculated at checkout.

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

Name

LENNOX PRESSURE SWITCH DUAL PORT 0.40" WC, SPST

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 premium air pressure switch is a vital safety component for residential furnace and HVAC systems. Designed as a dual-port air proving switch, it accurately monitors the pressure differential produced by the draft inducer motor to ensure exhaust gases are being properly vented. With a precise 0.40" WC (Water Column) set point and a Single Pole Single Throw (SPST) configuration, this switch prevents the ignition sequence if unsafe venting conditions are detected. If your heating system is experiencing ignition failure or intermittent shut-offs, replacing a worn or faulty pressure switch can restore reliable performance and ensure safe operation. This high-quality replacement part is engineered for durability and consistent sensing in high-efficiency heating environments.

Specifications

Type
Air Pressure Switch
Size
Small / Compact
Application
Residential gas furnaces, HVAC heating systems, and inducer motor safety monitoring.
Specifications
Dual port design, 0.40" WC set point, SPST (Single Pole Single Throw) contact configuration, air proving functionality.

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 773-357 a genuine OEM part?
Yes, the 773-357 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 773-357 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (773-357) 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 773-357 shipped?
Most Air Pressure Switches including the 773-357 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 773-357 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 773-357 is in stock before visiting.

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