Completed HC inspections Upstairs Blower wheel needs to be chemically cleaned. System does not have adequate flood protection. The equipment and living space could benefit from additional IAQ enhancements.Condenser unit’s coil is heavily impacted with buildup, capacitor is out of tolerance on both sides and the contactor is pitted. Main Floor CO readings between 9-12 PPM while running the heat. Blower wheel and condenser coil are both in need of chemical cleanings. Refrigerant is R22. Furnace is vented through the chimney stack *Unable to get the blower motor out without disconnecting flue along with the drain line, and pushing the unit back.