Transformer Question

desol

Hey guys,

On some new high-efficient furnaces with DC motors, there is a 2-wire transformer attached to the blower. Most transformers have a primary and secondary winding(hence 4 wires), this transformer only has 2 wires.

Anyone know what the purpose of this is?

Thanks

beenthere

What brad and model number furnace are you seeing this on?

acefurnacefxr

it is possibly just a coil......and not a transformer?

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jwiehagen76

Choke coil

beenthere

To prevent noise/harmonics interference.