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

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BCFURNACE

121-147

$650.00

+5% Tax • Shipping calculated at checkout.

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

Name

RELAY,POTENTIAL

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 heavy-duty Potential Relay is a vital electrical component designed for HVAC and refrigeration systems. It serves as a motor-starting device that automatically disconnects the start capacitor from the circuit once the compressor or motor reaches its designated operating speed. By utilizing back electromotive force (EMF) to trigger the switching mechanism, this relay ensures smooth startups, improves motor efficiency, and protects electrical components from prolonged high-current exposure. Ideal for repairing non-starting air conditioning units or heat pumps, this replacement relay is engineered for reliability and long-term performance in residential and commercial climate control systems.

Specifications

Type
Electrical Start Relay
Size
Standard
Application
Used in air conditioning compressors, heat pump systems, and refrigeration units to manage start-capacitor-assisted motor ignition.
Specifications
Voltage-sensitive electromagnetic operation; designed for high-torque motor starting applications; facilitates capacitor switching based on motor back EMF.

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 121-147 a genuine OEM part?
Yes, the 121-147 is a genuine OEM replacement part manufactured by BCFurnace. We source all electrical-transformers-relay from authorized distributors to ensure exact-fit compatibility. This electrical-transformers-relay 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 121-147 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (121-147) 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 electrical-transformers-relay 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 121-147 shipped?
Most electrical-transformers-relay including the 121-147 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 121-147 at your store?
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. electrical-transformers-relay orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 121-147 is in stock before visiting.

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