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View cart Proceed to checkoutCompadible models: ComfortZone and CZI with DC FansAO4 PC Board transformer
Compadible models: ComfortZone and CZI with Scroll FansAO5 PC Board Transformer
Replaces the old Ao4 and Ao5 PC boards on ComfortZone heaters. ComfortZone heaters will need an upgrade kit since this board includes the transformer. ComfortZone heaters with DC fans have the older AO4 board and will need the more complicated DC fan upgrade kit.Includes thermostat wire.
Compatible models: ComfortZone 1500 watt heaters with plastic cabinets.
Compatible models: ComfortZone and CZI heaters with AO4 or AO5 boards.Calibration remote to calibrate AO4 and AO5 boards.