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HVAC Blowers & Motors - Parts & Accessories - Transformers

HVAC equipment runs on high line voltage (typically 120V, 208V, 240V, or 480V) for the main components like compressors, blower motors, and heating elements. However, the control side—thermostats, control boards, relays, contactors, gas valves, zone dampers, and safety switches—uses low-voltage 24V AC for safety and standardization.

This type of transformer steps down the high primary voltage to safe 24V AC to power those low-voltage control circuits. The 75 VA rating indicates its power capacity (how much load it can handle before overheating); it's suitable for most residential and light commercial single-zone systems but may be undersized for large multi-zone setups with many dampers or accessories.

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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.

Help Find My Blower

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