providing reliable fixed temperature control across a wide range of Lennox and Allied Air equipment

By strictly managing the sequencing of HVAC heating elements

ensuring the stem position matches the controller output exactly

ensuring a precise fit without modification

This HVAC current sensor effectively monitors loads as small as 1/5 HP

Resideo AT88A1005 Transformer 328140-751 providing reliable fixed temperature controlThe Resideo AT88A1005 is a heavy duty, foot mounted HVAC control transformer designed to deliver reliable 24V power to high demand commercial and residential systems. Engineered as a 75VA transformer, this unit effectively steps down 120V primary voltage to a stable 26. 5V secondary output, providing the extra capacity needed for complex multi stage systems or zones. The internally fused secondary provides critical overload protection, preventing