1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace
Control Board With Comm Ver4.4, 1 Stage, SSE Control Board, Circuit, Ignition Modulating furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

Control Board With Comm Ver4.4, 1 Stage, SSE Control Board, Circuit, Ignition Modulating

BCFURNACE

121-678

CA$2,265.98

+5% Tax • Shipping calculated at checkout.

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

Name

Control Board With Comm Ver4.4, 1 Stage, SSE

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 advanced HVAC control board is a vital component for managing the ignition and operation of 1-stage heating systems. Featuring Communication Version 4.4, this circuit board facilitates seamless data exchange between system components to ensure optimal performance and energy efficiency. As an ignition modulating control, it regulates the heating cycle, monitors safety sensors, and manages blower timing to maintain a comfortable indoor environment. If your furnace or air handler is experiencing startup failures or communication errors, this replacement control module is designed to restore reliable system operation and precision control over your appliance's heating functions.

Specifications

Type
HVAC Control Board
Size
Standard medium-sized circuit board
Application
Designed for use in residential and commercial heating systems, specifically 1-stage furnaces and air handlers that utilize communication-enabled ignition modulation.
Specifications
Communication Version 4.4, 1-Stage heating control, Ignition Modulating capabilities, SSE (Smart System Electronics) integrated logic.

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 121-678 a genuine OEM part?
Yes, the 121-678 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 121-678 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (121-678) 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 121-678 shipped?
Most Control Boards including the 121-678 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 121-678 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 121-678 is in stock before visiting.

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