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

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BCFURNACE

040-121

$16.00

+5% Tax • Shipping calculated at checkout.

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

Name

SWITCH, PRESSURE

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

This premium air pressure switch is a critical safety component designed for high-performance HVAC systems. Functioning as an air proving switch, it monitors the pressure differential within your air conditioning or heating unit to ensure proper airflow is maintained during operation. By verifying that the inducer or blower motor is functioning correctly, this switch prevents the system from operating under unsafe conditions, such as blocked vents or motor failure. If your HVAC system is experiencing startup issues or intermittent shut-offs, this reliable replacement pressure switch provides a cost-effective solution to restore peak performance and safety. Built with durable materials to withstand the rigors of frequent cycling, it is an essential part for maintaining the longevity and efficiency of your residential or commercial climate control equipment.

Specifications

Type
Air Pressure Switch
Size
Small
Application
Designed for use in central air conditioning units, heat pumps, and furnaces to monitor pressure differentials and ensure safe system operation.
Specifications
Precision air proving technology, safety circuit integration, durable diaphragm construction.

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 040-121 a genuine OEM part?
Yes, the 040-121 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 040-121 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (040-121) 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 040-121 shipped?
Most Air Pressure Switches including the 040-121 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 040-121 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 040-121 is in stock before visiting.

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