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HVAC Blowers & Motors - Parts & Accessories - Ignition Controls

Ignition controls in an HVAC system (primarily gas furnaces, boilers, and some packaged units) are electronic modules or circuit boards that manage the safe and reliable ignition sequence for the burners, replacing older constant pilot lights with more efficient methods. They coordinate components like the inducer blower for pre-purge, gas valve opening, igniter activation (via spark from direct spark ignition or glow from hot surface ignitor), flame sensing/proof, and shutdown if flame fails to establish, preventing unsafe gas release while ensuring proper heating operation.

Common types include hot surface ignition (HSI, most prevalent in modern furnaces where a silicon carbide/nitride element glows red-hot to ignite gas), direct spark ignition (DSI, using an electrode to create a spark directly at the burners), intermittent pilot (spark lights a temporary pilot flame first), and older standing pilot systems (now rare due to inefficiency).

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Need help finding the correct blower or fan kit for your fireplace? Let our experts help you track down the correct replacement blower, fan kit or part for your application. We typically only need the fireplace or stove's make and model to determine exactly what you need. This information can usually be found on gas fireplaces by removing the lower access panel and finding your fireplace's name tag or identificaton card. Wood inserts will often times have the same identificaton card, while freestanding stoves and others might have this information printed on a rear panel or door.

Once you've located your fireplace's brand and model information, simply use the Find Your Blower tool above, or the Help Find My Blower at the top of the page.

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