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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So far so good! And we really appreciated the little hair cutting tool for the roller—nice touch. We've replaced one bag, one brush head, and one filter using this bargain kit so far, nothing much to complain about. It's not quite OEM quality but it's very likely going to work well enough. We expect to go through one kit like this per year. Be aware that the rotating brush head replacement (the small round head ones, not the big rollers), have a little philips head screw that you have to remove. This was kind of hard to get off at first. We haven't used one of the replacement rollers yet, expect that we'll go through about two a year with our C10 at the current rate of wear.

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Reviewed in the United States on October 7, 2025

Verified Purchase

Marci H.

Massapequa, US

★★★★★ 5

Great Price and Product

This accessory kit was a good price and great fit for my eufy vacuum. I will buy it again.

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Reviewed in the United States on December 14, 2025

Verified Purchase

Cassie