Power systems with this genuine OEM transformer, part number 38M45, compatible with select GE or Lennox Furnace, Heat Pump, or Air Handler.
Grid is 1 inch square
38M45 Transformer
Manufacturer Part

38M45 Transformer

Genuine OEM Part # 38M45Alternative Part Number(s)
Manufacturer Part
Power systems with this genuine OEM transformer, part number 38M45, compatible with select GE or Lennox Furnace, Heat Pump, or Air Handler.
Grid is 1 inch square
38M45 Transformer
$49.84
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Power systems with this genuine OEM transformer, part number 38M45, compatible with select GE or Lennox Furnace, Heat Pump, or Air Handler.
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$49.84
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This part 38M45 is compatible with:

Product Type:
Air Handler, Furnace, Heat Pump

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Transformer Customer Reviews

Common Problems Fixed by the Transformer

Based on customer reports and repair data, this part commonly fixes these issues:

Likely

Furnace not turning on

Possible

Air handler not heating

Possible

Air handler not cooling properly

Possible

Heat pump not cooling

Possible

Heat pump not heating

Possible

Heat pump won't turn on

Possible

Furnace wall thermostat not working properly

Possible

Air handler wall thermostat not working properly

Possible

Heat pump wall thermostat not working properly

Possible

Furnace not heating

About the Transformer

A furnace transformer is the component that decreases or increases the incoming voltage to power the unit. A faulty transformer can prevent the furnace from turning on. If there is no secondary 24 volt power to the thermostat, the furnace trips a circuit breaker when it comes on, or you hear a consistent humming or vibrating noise, it's possible the transformer has failed.

Alternative Part Number(s)

Replaces Part Number 38M4501