1-778-759-9864
United States (USD $) flagUnited States (USD $)
BCFurnace
Flow Switch 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

Flow Switch Air Pressure Switch, Air Proving

BCFURNACE

040-355

$671.00

+5% Tax • Shipping calculated at checkout.

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

Name

Flow Switch

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

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Local Pickup

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

Product Details

Description

Ensure your HVAC system operates safely and efficiently with this high-performance Air Pressure Flow Switch. Designed as a critical air-proving component, this switch monitors the pressure differential within your system to confirm proper airflow before allowing heating or cooling cycles to engage. This essential safety mechanism prevents equipment damage and overheating by ensuring the blower or fan is functional. Ideal for commercial and industrial climate control units, this flow switch offers precise sensing and reliable performance. Whether you are troubleshooting a system that won't start or performing preventative maintenance, this air pressure sensor is a vital replacement part for maintaining optimal air circulation and system integrity.

Specifications

Type
Air Pressure Switch / Air Proving Switch
Size
Standard
Application
Commonly used in commercial HVAC systems, chillers, air handling units, and industrial ventilation systems to verify airflow and pressure differential.
Specifications
Features a sensitive diaphragm for precise air pressure detection; integrated electrical contacts for system safety loops; durable construction designed for long-term HVAC environment exposure.

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 040-355 a genuine OEM part?
Yes, the 040-355 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 040-355 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (040-355) 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 040-355 shipped?
Most Air Pressure Switches including the 040-355 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 040-355 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 040-355 is in stock before visiting.

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