Pentair Air Flow Switch Kit, for Heater | 42001-0061S Jack's Magic Hayward DE filtration systems are

Hayward DE filtration systems are a standard in residential pools

It is often replaced during full spa remodels

The WFK series supports dependable water circulation

Routine inspection helps determine when full assembly replacement is required

the A270SS is built to endure the elements while maintaining its premium brushed finish

Pentair Air Flow Switch Kit, for Heater | 42001-0061S Jack's Magic Hayward DE filtration systems areWhat This Part Is Used For The Pentair 42001 0061S Air Flow Switch Kit is used in compatible Pentair heaters to monitor proper airflow. It helps ensure safe heater operation by verifying adequate ventilation. Why This Part Matters A faulty air flow switch can prevent ignition or cause heater shutdown. Replacing the switch helps restore safe startup and consistent heating performance. Proper airflow monitoring protects heater components from damage.