What is the cost to replace a furnace control board?

Furnace control board replacement typically costs $300-$600 in Ottawa, including parts and labor from a licensed HVAC technician. The control board itself usually runs $150-$350, with labor adding another $150-$250 for the diagnostic work and installation.

The final cost depends on your furnace model and the complexity of the repair. Newer high-efficiency furnaces often have more expensive control boards ($250-$350) compared to older standard-efficiency units ($150-$250). Some premium or commercial-grade furnaces may have control boards costing $400+ due to advanced features like modulating gas valves or variable-speed blower controls.

In Ottawa's HVAC market, most reputable contractors charge $100-$150 per hour for furnace repairs, and control board replacement typically takes 1-2 hours depending on accessibility and whether additional diagnostic work is needed. Some companies may charge a flat diagnostic fee ($100-$150) that gets applied toward the repair cost.

Before replacing the control board, a qualified technician should verify it's actually faulty through proper diagnostic testing. Sometimes issues that appear to be control board failures are actually caused by faulty sensors, wiring problems, or other components. A good HVAC technician will test voltage, check connections, and rule out other causes before recommending board replacement.

If your furnace is over 15 years old and needs a control board replacement, it's worth getting a quote for a new high-efficiency furnace as well. Sometimes the cost of major repairs on an aging system makes replacement the more economical long-term choice, especially with available rebates on high-efficiency equipment.

For an accurate diagnosis and quote on your specific furnace, contact a TSSA-licensed HVAC contractor who can properly test your system and provide transparent pricing.