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

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BCFURNACE

121-450

$1,169.00

+5% Tax • Shipping calculated at checkout.

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

Name

BOARD,CIRCUIT,MAIN,RESPAK,ULN

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

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

Product Details

Description

This high-performance Main Control Board is a critical replacement component for residential HVAC systems, specifically engineered for units requiring precision ignition modulation. As the central brain of the appliance, this circuit board manages essential functions including the ignition sequence, blower motor timing, and gas valve modulation to ensure optimal energy efficiency and consistent indoor climate control. It is designed to meet Ultra-Low NOx (ULN) standards, making it an ideal choice for maintaining environmentally friendly heating systems. If your HVAC unit is experiencing intermittent start-up failures, improper cycling, or diagnostic error codes, replacing the main control board can restore reliable performance and extend the lifespan of your equipment.

Specifications

Type
Ignition Modulating Control Board
Size
Standard Control Board Profile
Application
Used in residential heating and cooling package units, modulating furnaces, and high-efficiency HVAC systems requiring Ultra-Low NOx compliance.
Specifications
Features advanced modulation logic for gas valve control, integrated diagnostic LEDs, ULN-compliant circuitry, and multi-pin connector compatibility for residential package systems.

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 121-450 a genuine OEM part?
Yes, the 121-450 is a genuine OEM replacement part manufactured by BCFurnace. We source all Control Boards from authorized distributors to ensure exact-fit compatibility. This Control Boards 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 121-450 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (121-450) 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 Control Boards 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 121-450 shipped?
Most Control Boards including the 121-450 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 121-450 at your store?
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Control Boards orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 121-450 is in stock before visiting.

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