1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace
Air Pressure Control Switch, SPST, 0.20" 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

Air Pressure Control Switch, SPST, 0.20" WC Air Pressure Switch, Air Proving

BCFURNACE

021-440

CA$134.22

+5% Tax • Shipping calculated at checkout.

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

Name

Air Pressure Control Switch, SPST, 0.20" 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 Air Pressure Control Switch is a vital safety component for residential and commercial HVAC systems, including packaged gas and electric units. Functioning as an air proving switch, it monitors the pressure differential created by the draft inducer motor to ensure that combustion gases are being properly vented before the ignition process begins. This SPST (Single Pole Single Throw) switch is calibrated to a specific 0.20" WC (Water Column) set point, ensuring high sensitivity and reliable system monitoring. If your heating system fails to ignite or experiences intermittent shutdowns, a faulty air pressure switch is a common culprit. Replacing a malfunctioning switch is essential for maintaining the efficiency and safety of your furnace or rooftop unit.

Specifications

Type
Air Pressure Switch / Air Proving Switch
Size
Small
Application
Used in residential and commercial HVAC units, gas-fired furnaces, and packaged heating/cooling systems to monitor draft inducer airflow.
Specifications
Configuration: SPST (Single Pole Single Throw); Set Point: 0.20" WC; Function: Air Proving/Safety Limit

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 021-440 a genuine OEM part?
Yes, the 021-440 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 021-440 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (021-440) 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 021-440 shipped?
Most Air Pressure Switches including the 021-440 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 021-440 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 021-440 is in stock before visiting.

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