Air Conditioner Components

Air Conditioner Components

Air conditioner components within the Cooling, Heating system control how conditioned air is produced, routed, and delivered through the cab. In 1955-1972 Passenger, 1955-1970 Mercury applications and 1968-1979 Pick Up, this subsystem manages airflow from the blower assembly through the evaporator and into the dash outlets while maintaining sealed separation between the engine compartment and interior space.

This category includes electrical controls such as AC switches, heater motor switches, and under dash AC fan blower switches, along with airflow regulators like AC & heater blower switches and temperature regulator valves. Air distribution is handled through vents, registers, plenum chamber connectors, and defroster duct seals. The evaporator assembly relies on housing seals, drain hoses, and grommets to maintain pressure and remove condensation. Firewall seals and AC line seals prevent air leakage and protect the system boundary.

Compressor service components—including clutch brush and holder assemblies, crankshaft seal kits, and gasket sets—support the mechanical side of the system where refrigerant compression occurs. When all components are correctly sealed and aligned, airflow remains controlled and temperature response stays consistent across operating conditions.

Airflow begins at the blower motor and housing, where the blower motor mount to housing gasket and blower housing to firewall gasket ensure the system pulls air through the intended path. The AC blower housing to dash outlet rubber hose connects this airflow to the dash distribution system, feeding vents, registers, and defroster ducts.

The evaporator assembly forms the center of the system. Evaporator to firewall gaskets, evaporator to plenum chamber seals, and evaporator housing to hose grommets maintain a sealed chamber so air passes through the core rather than around it. Moisture produced during operation exits through the evaporator bottom drain hose.

Control functions are divided between electrical and vacuum systems. Switches regulate blower speed and system engagement, while heater door motor assemblies (vacuum type) direct airflow between heater and cooling paths. Temperature regulator valves influence heater core operation, affecting final air temperature.

Common service issues include hardened grommets, collapsed seals, and loose firewall pass-throughs that allow air loss or heat intrusion. Electrical switches often develop inconsistent contact, and vacuum motors may fail to hold position. Fitment will vary by model and year.

C&G Ford Parts has been family-owned and dedicated to classic Ford vehicles since 1978. Our team works with these parts daily and understands the real-world fitment details that matter during a proper restoration.