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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I’ve been using these for several days now and I did notice a difference. I tend to get hot while sleeping, so I was curious if they would actually help, and they do feel cool when you lay on them. I also like that they’re soft and comfortable, not that weird texture some “cooling” products have. So far, I’ve been really happy with them.

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Reviewed in the United States on May 23, 2026

Verified Purchase

Shannon

Battle Creek, US

★★★★★ 5

Soft and good quality fabric

Color: Dark Gray, Size: Standard

I have senstive skin, so the feel of fabric is important to me. These pillowcases were nice and soft. The material had a nice weight to it and you could not see through the material. Came out of the wash well too, not wrinkled.

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Reviewed in the United States on May 20, 2026

Verified Purchase

chris

New York, US

★★★★★ 5

Soft on skin

Color: Smoke Blue, Size: King

Very happy with these and they are as advertised. Very soft on the skin and have survived many washings. Quality made and very reasonably priced. Highly recommend.

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Reviewed in the United States on May 7, 2026