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

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BCFURNACE

020-551

$53.00

+5% Tax • Shipping calculated at checkout.

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

Name

SWITCH; LOW PRESSURE BZ

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

The Low Pressure Switch BZ is a critical safety component designed for residential and commercial HVAC systems, including central air conditioners and heat pumps. This air pressure switch acts as a protective sensor, monitoring the refrigerant levels within the cooling cycle. If the system pressure drops below a safe threshold—often due to a refrigerant leak or a restricted coil—this switch automatically interrupts the electrical circuit to shut down the compressor. By preventing the system from operating under low-pressure conditions, it protects expensive internal components from overheating and mechanical failure. This high-quality replacement air proving switch ensures your climate control system operates efficiently and safely, making it an essential part for routine maintenance or emergency HVAC repairs.

Specifications

Type
Air Pressure Switch / Low Pressure Cutout
Size
Compact
Application
Used in central air conditioning units and heat pump systems to monitor refrigerant pressure and provide compressor protection.
Specifications
Low-pressure safety cutout; air proving functionality; designed for HVAC refrigerant lines; helps prevent compressor burnout due to loss of charge.

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 020-551 a genuine OEM part?
Yes, the 020-551 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 020-551 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (020-551) 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 020-551 shipped?
Most Air Pressure Switches including the 020-551 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 020-551 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 020-551 is in stock before visiting.

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