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The Allied Air LB-111888A is a furnace transformer kit (model 17W56) provided as a genuine replacement for Armstrong/Allied Air and Lennox equipment. It is intended for use in furnaces, air conditioners, and rooftop units to replace existing transformer assemblies and restore transformer function in HVAC control circuits.
Replacement furnace transformer kit compatible with Armstrong and Lennox units (MPN LB-111888A / 17W56).
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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