Swimables SW-41-061 Air Flow Switch for Pentair MasterTemp & Max-E-Therm

Key Benefits + Heater Compatibility

• Swimables replacement air flow switch for select Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters.
• Cross-references Pentair part number 42001-0061S.
• Monitors blower vacuum / negative pressure as part of the heater safety and ignition-control sequence.
• Helps the control system verify combustion-air flow before allowing the ignition module to operate.
• Part-number matching helps reduce wrong-part orders when servicing heater airflow or ignition faults.

Quick Product Summary

The Swimables SW-41-061 is a MasterTemp / Max-E-Therm style air flow switch that cross-references Pentair 42001-0061S. It is used in compatible Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters as part of the combustion-air safety circuit. Pentair describes the air flow switch as a factory-set safety device that monitors negative pressure in the blower housing and must be closed, along with the other safety switches, before the ignition module can operate. This replacement is best for pool professionals and equipment owners who have confirmed 42001-0061S or SW-41-061 as the required heater part. Verify the exact heater model, original part number, and diagnosis before ordering.

Best For

Replacing a confirmed 42001-0061S-style air flow switch on compatible Pentair MasterTemp and Sta-Rite Max-E-Therm pool or spa heaters.

Why This Matters

• The air flow switch is part of the heater’s combustion-air safety system.
• It helps verify that the blower is producing the required negative pressure before ignition is permitted.
• A failed or open switch can prevent the ignition sequence from proceeding when the switch has been correctly identified as the problem.
• Matching the original 42001-0061S part reference helps avoid replacing the wrong heater safety component.

Common Signs You Need This / Use This When

• Your heater parts diagram or existing switch identifies 42001-0061S or SW-41-061.
• The heater shows an air-flow-related fault and proper diagnosis has identified the air flow switch as the failed component.
• The existing switch, tubing connection, or mounting assembly is damaged and the correct replacement part has been confirmed.
• You are servicing a compatible MasterTemp or Max-E-Therm heater and need the listed air flow switch replacement.

Product Specifications

Compatibility / Fitment Notes

Swimables identifies SW-41-061 as a MasterTemp / Max-E-Therm style air flow switch and cross-references it to Pentair 42001-0061S. Pentair lists 42001-0061S as the air flow switch in its heater replacement-parts catalog. Heater generations and configurations can vary, so confirm the exact heater model and original switch part number before purchase.

Installation / Use Notes

Gas pool-heater service involves electrical, combustion, and gas-safety systems. Follow the heater manufacturer’s service instructions and disconnect power before service. Do not bypass, alter, or defeat the air flow switch or other heater safety controls. Diagnosis and replacement should be performed by a qualified pool-heater service professional when appropriate.

Buy with Confidence

Benchmark Pool Supply helps customers identify pool-heater replacement parts using real equipment knowledge and part-number matching. For safety-control components like SW-41-061, we focus on the exact cross-reference and heater family so you can verify the correct part before ordering.

Frequently Asked Questions

What does the Swimables SW-41-061 replace?

Swimables cross-references SW-41-061 to Pentair 42001-0061S, the air flow switch used in compatible MasterTemp and Max-E-Therm heater applications.

What does the air flow switch do in a MasterTemp heater?

Pentair describes the air flow switch as a safety device that monitors negative pressure in the blower housing. The ignition module does not operate unless the air flow switch and the heater’s other safety switches are closed.

Does SW-41-061 fit both MasterTemp and Max-E-Therm heaters?

Swimables lists SW-41-061 for MasterTemp and Max-E-Therm style applications. Confirm the exact heater model and original 42001-0061S part reference before ordering.

Can an air flow switch cause a heater not to ignite?

An open or failed air flow switch can prevent the ignition module from operating because it is part of the heater safety circuit. The complete heater should be properly diagnosed before replacing the switch.

What should I verify before ordering SW-41-061?

Confirm the heater model, original air flow switch part number, and that diagnosis has identified the switch as the required replacement. Match SW-41-061 to 42001-0061S rather than ordering by appearance alone.