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Manufacturer Part
Lennox Transformer 87344
Manufacturer Part
$124.00
Does this part fit my product?
Power systems with this genuine OEM transformer, part number 87344, compatible with select Lennox Furnace, Packaged Unit/RTU, Heat Pump, Water Heater, or Unit Heater.
$124.00
This part 87344 is compatible with:
- Product Type:
- Furnace, Water Heater
- Brands:
- Lennox
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Frequently Bought with Transformer
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
Heat pump not cooling
Possible
Heat pump not heating
Possible
Heat pump won't turn on
Possible
Furnace 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.
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Alternative Part Number(s)
Replaces Part Number P-3-777
Replaces Part Number P-3-788
Replaces Part Number P-8-10970
Replaces Part Number P-8-2426
Replaces Part Number 20A80
Replaces Part Number 31442
Replaces Part Number 31775
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