1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
Cut-Out Switch, High Pressure 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

Cut-Out Switch, High Pressure Air Pressure Switch, Air Proving

BCFURNACE

021-439

CA$150.70

+5% Tax Shipping calculated at checkout.

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

Name

Cut-Out Switch, High Pressure

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

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

Product Details

Description

The High-Pressure Cut-Out Switch is a vital safety component designed for HVAC systems, furnaces, and high-performance air handling units. Functioning as a reliable air proving switch, this part monitors internal pressure levels to ensure the appliance operates within safe parameters. If air pressure exceeds the recommended limit, the switch interrupts the electrical circuit to prevent system damage, overheating, or hazardous operation. Common symptoms of a failing pressure switch include intermittent cycling, failure to ignite in furnaces, or the system shutting down prematurely. This durable replacement switch ensures precise pressure detection and seamless integration into heating and cooling equipment. Ideal for maintaining the efficiency and safety of residential and commercial climate control systems, it is a critical repair part for technicians and DIYers looking to restore proper airflow monitoring.

Specifications

Type
Air Pressure Switch / Safety Cut-Out
Size
Small
Application
Commonly used in forced-air furnaces, central air conditioning units, heat pumps, and industrial ventilation systems to verify proper blower motor operation and internal pressure safety.
Specifications
High-pressure threshold monitoring, electrical contact terminals for circuit interruption, and durable housing for heat resistance.

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

You Might Also Like

Compatible parts and related replacements

Browse all parts

Frequently Asked Questions

Is the 021-439 a genuine OEM part?
Yes, the 021-439 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 021-439 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (021-439) 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 021-439 shipped?
Most Air Pressure Switches including the 021-439 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 021-439 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 021-439 is in stock before visiting.

Looking for more Air Pressure Switches?