Pentair 42002-0025S switch front view ensuring safe pool heater operation
Pentair 42002-0025S switch side angle for installation-ready replacement
AGS switch closeup highlighting quick response and durability
Compatibility closeup with SR200, SR333, SR400 heaters for seamless replacement
Wiring area showing secure connection for dependable operation
In-packaging view emphasizes ready-to-install package
Thermal safety indicator highlights 140°F protection feature

Wholesale Sensors

Wholesale Sensors Pentair 42002-0025S 140°F AGS Switch for Pool & Spa Heaters – 12-Month Warranty & USA Support

High-performance patio lawn and garden made for confident daily results

$35.87

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Why customers choose Cera Garden

Safety-first upgrade for pool and spa heaters

Upgrade your Pentair Sta-Rite Max-E-Therm system with the 140°F Automatic Gas Shutoff (AGS) switch. This component is engineered to monitor heat and automatically reduce risk by cutting the gas supply when temperatures trend toward overheating. The result is steadier heater operation and a calmer water temperature, letting you enjoy the pool or spa with greater peace of mind.

What makes it fit for your heater

The switch is designed as a precise replacement for Pentair 42002-0025S and fits SR200, SR333, and SR400 models. The package includes a single AGS switch with exact specifications for smooth installation. Its compact profile helps it slide into the control area without crowding nearby components.

  • Direct compatibility with Sta-Rite Max-E-Therm heaters
  • Secure, reliable connections that resist heat, humidity, and chemicals

Durable, easy to install

Manufactured with high-grade materials, the AGS switch is built to endure pool and spa conditions. The sensor delivers accurate readings and a quick shutoff response, contributing to safe and efficient operation. Replacing the switch is straightforward for many DIY enthusiasts.

  • Resistant to high heat and chemical exposure
  • Simple replacement that minimizes downtime

Warranty, support, and what you can expect

Wholesale Sensors backs this switch with a 12-month warranty and USA-based support. While results may vary, customers can count on dependable parts and prompt assistance if questions arise during installation or maintenance.

Real-world scenarios include seasonal heating where consistent temperature control matters, routine maintenance checks that benefit from a quick component swap, and situations where a failed switch could otherwise disrupt pool or spa use. This AGS switch aims to complement your heater’s safety system without altering the core operation, letting you manage energy use and water comfort with confidence.

FAQ

Q: What is the 140°F Automatic Gas Shutoff switch designed for?

A: It automatically shuts off gas if the heater temperatures rise too high, supporting safer operation.

Q: Is this a direct replacement for Pentair Sta-Rite Max-E-Therm models SR200, SR333, and SR400?

A: Yes, it fits SR200, SR333, and SR400 models as a direct replacement for the 42002-0025S switch.

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