Honeywell Furnace Control Board S1-03102959000 / 1138-103 – Guaranteed Working

If your furnace or air handler is acting up, this Honeywell control board might be the fix.

It's a used board, but don't worry—it's been tested and guaranteed working before removal from a fully functional system.

Part numbers: S1-03102959000, 1138-103, and 03102959000.

Fits Heil, ICP, and YORK systems.

Works with split AC, central air, heat pumps, and gas furnaces.

115V, 40 amp, 1 phase.

Comes with tech support if you need help.

8 x 6 inches, about 1 lb.

Solid replacement for a dead board.