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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Overall, great quality in suit the size was pretty good although the only thing that I wish that it had belt loops instead of an elastic band, but for the value of the money, you cannot beat that at all it looks great. It fits good. The fabric is soft and comfortable. If I could, I would buy this again definitely worth to buy.

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Reviewed in the United States on February 11, 2026

Verified Purchase

Gavin Robinson

Lexington, US

★★★★★ 4

I read this 4 1/2 out of five

High-quality material the pants was a little baggy, but the jacket fit perfect

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Reviewed in the United States on April 24, 2026

Verified Purchase

Walt Butcher