Pentair MasterTemp & Max-E-Therm Heater Air Flow Switch 42001-0061S by Swimables | SW-41-061

Pentair MasterTemp & Max-E-Therm Heater Air Flow Switch 42001-0061S by Swimables | SW-41-061

Marsoni

M251S

$99.99

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

Pentair MasterTemp & Max-E-Therm Heater Air Flow Switch 42001-0061S by Swimables | SW-41-061The Swimables SW 41 061 Air Flow Switch is a critical safety and ignition component for Pentair MasterTemp and Max E Therm pool and spa heaters. This switch monitors the pressure differential across the air metering orifice to verify adequate combustion airflow before ignition can proceed. Once the blower generates sufficient air movement, the AFS closes its contacts, completing the circuit to the hot surface igniter (HSI) and initiating the fuel

Easy Shipping

Quick Dispatch:

Your Pentair MasterTemp & Max-E-Therm Heater Air Flow Switch 42001-0061S by Swimables | SW-41-061 orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Pentair MasterTemp & Max-E-Therm Heater Air Flow Switch 42001-0061S by Swimables | SW-41-061 ships.

Need Help?
Questions about Pentair MasterTemp & Max-E-Therm Heater Air Flow Switch 42001-0061S by Swimables | SW-41-061, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Pentair MasterTemp & Max-E-Therm Heater Air Flow Switch 42001-0061S by Swimables | SW-41-061 in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

I have been coding and implementing productivity processes for thirty years and I still found "The Art of Clean Code" engaging and valuable. I've done almost everything in the book, yet like many who have been in the field for a while, the refresher was timely. My work now is vastly different from my work in the '90's, and even what I was doing in the '80's. While the book uses Python examples the code is easy to read and applicable anywhere. Most of the guidelines given even benefit daily life, not just coding. Highly recommended!

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on January 6, 2026