Carrier / ICP HK42FZ013 circut board - $50.00

Carrier / Bryant / Payne HK42FZ009 circuit board with transformer - $74.99

Carrier / Bryant 2-stage HK42FZ circuit board with HK70EZ model plugin / duel switch & trasformer (not shown in picture) $75.00

Carrier HK42FZ009 furnace control circuit board $64.99

Lennox 46M9901 OEM 2 stage control board door switch transformer and 3 Amp resettable fuse - $124.99

Lennox / Armstrong R40403-003 furnace control circuit board $55.95

Traine / American Standard D341235P01-50A55 circuit board with transformer and door switch - $84.99