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

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BCFURNACE

121-429

$2,040.00

+5% Tax • Shipping calculated at checkout.

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

Name

DUCT PRESSURE TRANSDUCER

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 high-quality Duct Pressure Transducer is an essential component for maintaining the safety and efficiency of residential and commercial HVAC systems. Functioning as a precise air proving switch, this part monitors the differential pressure within the ductwork to ensure that the system is achieving proper airflow before allowing the heating or cooling cycles to proceed. By converting physical air pressure into an electrical signal for the control board, it prevents the unit from operating under unsafe conditions, such as a failed blower motor or a blocked vent. If your HVAC system is experiencing intermittent shutdowns or displaying airflow-related error codes, replacing a faulty pressure sensor can restore reliable performance. This transducer is engineered for durability and high-precision sensing in various air handling and ventilation applications.

Specifications

Type
HVAC Air Pressure Transducer
Size
Small
Application
Used in residential and commercial HVAC units, furnaces, and air handlers for airflow verification and duct pressure monitoring.
Specifications
High-precision pressure sensing, air-proving safety functionality, converts pneumatic pressure to electronic control signals.

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 121-429 a genuine OEM part?
Yes, the 121-429 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 121-429 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (121-429) 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 121-429 shipped?
Most Air Pressure Switches including the 121-429 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 121-429 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 121-429 is in stock before visiting.

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