Pentair Air Flow Switch | MasterTemp & Max-E-Therm Pool Heaters | 42001-0061S C9494 Then wake up the next

Then wake up the next day to an algae-free pool that still has a chlorine reading

The Pentair Strainer Basket (400007Z) is the OEM replacement strainer basket for the WhisperFlo XF

inspect the strainer cover and lock ring threads for hairline cracks each time you service the basket — early replacement prevents air ingestion and loss of prime

Total Alkalinity

Pentair Air Flow Switch | MasterTemp & Max-E-Therm Pool Heaters | 42001-0061S C9494 Then wake up the nextThe Pentair Air Flow Switch (42001 0061S) is the OEM replacement air flow switch for Pentair MasterTemp and Pentair (formerly Sta Rite) Max E Therm pool heaters. IMPORTANT: HEATER COMPONENT LICENSED TECHNICIAN REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high voltage components without proper certification. The air flow switch monitors