42001-0061S Air Flow Switch for MasterTemp & Max-E-Therm Pool Heaters | Pentair

42001-0061S Air Flow Switch for MasterTemp & Max-E-Therm Pool Heaters | Pentair

Marsoni

M251S

$159.99

Get it in 3 business days with 1 day shipping. Friday, May 29

42001-0061S Air Flow Switch for MasterTemp & Max-E-Therm Pool Heaters | PentairThe genuine OEM Pentair Air Flow Switch (42001 0061S) is the safety sensor that confirms adequate combustion air is reaching the burner before allowing ignition. It monitors the pressure differential across the air metering orifice; once airflow reaches the required threshold, the switch closes the circuit to the hot surface igniter (HSI), which lights the gas air mixture. During a typical heating call, the blower and HSI energize simultaneously.

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These are great. They are made well, look nice and are easy to move when I’m dusting. I use these to keep perfumes, lotions and vitamins organized atop my dresser. The velvety compartments are a well sized and the layout is conducive to storing the kind of objects women or men typically store atop a dresser. I find these bins quite functional. I feel like these were a good value. They weren’t the cheapest and they weren’t the most expensive. They look nice and feel high quality enough.

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Reviewed in the United States on July 4, 2025