1-778-759-9864
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BCFurnace

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BCFURNACE

021-877

$76.00

+5% Tax • Shipping calculated at checkout.

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

Name

SWITCH, SPDT, 22 AMPS, 480V, PRESSURE

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 heavy-duty Air Pressure Proving Switch is a critical safety and operational component designed for commercial and industrial HVAC systems. As an SPDT (Single Pole Double Throw) switch, it accurately monitors air pressure levels to ensure proper airflow within air handling units, furnaces, and ventilation systems. Rated for high-capacity 22 Amp and 480V applications, this switch acts as a reliable air flow sensor that prevents system operation if hazardous conditions or blockages are detected. It is an essential replacement part for maintaining the efficiency and safety of large-scale climate control equipment, providing precision switching and long-lasting durability in demanding environments.

Specifications

Type
Air Pressure Switch / Air Proving Switch
Size
Medium
Application
Commonly used in commercial HVAC systems, industrial air handlers, ventilation units, and furnace air-proving circuits to monitor blower operation and duct pressure.
Specifications
Switch Configuration: SPDT (Single Pole Double Throw); Current Rating: 22 Amps; Maximum Voltage: 480V; Actuation Type: Pressure-sensitive; Application: Air Proving.

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 021-877 a genuine OEM part?
Yes, the 021-877 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 021-877 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (021-877) 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 021-877 shipped?
Most Air Pressure Switches including the 021-877 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 021-877 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 021-877 is in stock before visiting.

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