1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace
Control Board, Simplicity 1A, 2/4 Stage 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, Simplicity 1A, 2/4 Stage Control Board, Circuit, Ignition Modulating

BCFURNACE

121-104

CA$777.90

+5% Tax • Shipping calculated at checkout.

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

Name

Control Board, Simplicity 1A, 2/4 Stage

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

The Simplicity 1A Control Board is a high-performance ignition modulating circuit board designed to serve as the central processing hub for multi-stage heating and cooling systems. This 2/4 stage control module manages critical HVAC operations, including burner ignition sequences, fan speed timing, and precise temperature modulation. It is an essential replacement part for restoring efficiency and reliability to commercial rooftop units and high-capacity furnaces that are experiencing ignition failure, intermittent cycling, or diagnostic errors. Built with advanced circuitry, this board ensures seamless transitions between stages, protecting your equipment from mechanical stress while maintaining consistent indoor climate control and energy efficiency.

Specifications

Type
Ignition Modulating Control Board
Size
Standard medium-scale circuit board
Application
Used primarily in commercial rooftop HVAC units, multi-stage furnaces, and high-efficiency climate control systems requiring modulated ignition and staged cooling/heating management.
Specifications
Supports 2-stage and 4-stage operation; integrated ignition modulation; LED diagnostic indicators; 1A series logic architecture; compatible with multi-stage gas valves and blower motors.

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 121-104 a genuine OEM part?
Yes, the 121-104 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 121-104 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (121-104) 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 121-104 shipped?
Most Control Boards including the 121-104 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 121-104 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 121-104 is in stock before visiting.

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