What are some possible manifestations from an overly dirty A/C air filter?

What are some possible manifestations from an overly dirty A/C air filter?

• A. High temperatures in the cabin
• B. Increased suction causing low-pressure switch activation or tripped circuit breaker
• C. Reduction in airflow to the cabin
• D. Excessive noise from the A/C unit

Answer: (B)

An overly dirty A/C air filter can indeed lead to increased suction within the system, which may cause the low-pressure switch to activate or even trip a circuit breaker. When the air filter is clogged with dirt and debris, the airflow into the system is restricted. This restriction causes the evaporator coil to operate at a reduced airflow rate, which can drop the pressure within the refrigerant circuit. As the low-pressure switch monitors the system's pressure to ensure proper operation, it will trigger if the pressure drops too low—thus protecting the system from potential damage due to lack of refrigerant flow. Additionally, if the system struggles to maintain function due to insufficient airflow, it can also lead to higher stresses on the components, causing circuit breakers to trip. Therefore, maintaining a clean air filter is crucial for the optimal performance of the A/C system and preventing these operational issues.

An overly dirty A/C air filter can indeed lead to increased suction within the system, which may cause the low-pressure switch to activate or even trip a circuit breaker. When the air filter is clogged with dirt and debris, the airflow into the system is restricted. This restriction causes the evaporator coil to operate at a reduced airflow rate, which can drop the pressure within the refrigerant circuit. As the low-pressure switch monitors the system's pressure to ensure proper operation, it will trigger if the pressure drops too low—thus protecting the system from potential damage due to lack of refrigerant flow. Additionally, if the system struggles to maintain function due to insufficient airflow, it can also lead to higher stresses on the components, causing circuit breakers to trip. Therefore, maintaining a clean air filter is crucial for the optimal performance of the A/C system and preventing these operational issues.