1-778-759-9864
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BCFurnace
High Pressure Switch, 650-420# 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

High Pressure Switch, 650-420# Air Pressure Switch, Air Proving

BCFURNACE

040-821

CA$97.80

+5% Tax • Shipping calculated at checkout.

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

Name

High Pressure Switch, 650-420#

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 high-performance High Pressure Switch is a vital safety component for HVAC systems, specifically designed to monitor and regulate refrigerant levels in air conditioning and heat pump units. Functioning as an air proving and pressure-sensing device, it protects the compressor by automatically interrupting the electrical circuit if internal pressure exceeds safe operating limits. With a cut-out set point of 650 PSI and a reset point of 420 PSI, this switch prevents system failure and mechanical damage due to overheating or blockages. It is an essential replacement part for maintaining the longevity and efficiency of residential and commercial climate control systems, ensuring they operate within designated pressure parameters.

Specifications

Type
Air Pressure Switch
Size
Small
Application
Used as a safety cut-out in HVAC systems, central air conditioning units, and heat pumps to monitor high-side refrigerant pressure.
Specifications
Cut-out Pressure: 650 PSI; Cut-in Pressure: 420 PSI; Application: High-pressure protection; Reset Type: Automatic

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 040-821 a genuine OEM part?
Yes, the 040-821 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 040-821 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (040-821) 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 040-821 shipped?
Most Air Pressure Switches including the 040-821 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 040-821 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 040-821 is in stock before visiting.

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