With a deep-pleat design

maintaining optimal efficiency and preventing premature component wear

it prevents automatic equipment restarts after a low-temperature cutout

Part of the Apollo 18C-500 series

this PCB (Printed Circuit Board) manages essential sequences including electric heat (EHEAT)

Heil Quaker ICP 1172028 Transformer 322055-301 With a deep-pleat designThe Heil Quaker ICP 1172028 Transformer is a critical power conversion component designed for high performance residential and light commercial HVAC systems. This 208V to 24V step down transformer provides a steady 24VAC output from a 208V primary input, ensuring consistent operation for control boards, igniters, and thermostats. Rated at 40VA, it effectively manages the electrical load of modern furnaces, air handlers, and heat pumps from brands like