Pentair MasterTemp Pool Heater Thermistor
Best replacement part for pool owners troubleshooting inaccurate heater temperature readings.
This sensor is the difference between a perfectly tempered pool and a system that refuses to fire. It is a simple, non-negotiable fix that restores precise control to your heater, trading a few minutes of installation time for the reliability of a factory-spec component.
$64.82
at
Bestpoolshop
Who it's for
- Pool owners prioritizing accurate heater performance and efficiency
- DIY homeowners looking to minimize service costs and downtime
- Budget-conscious owners needing a quick fix for sensor errors
Who should skip it
- Owners frustrated by the need for recurring component replacements
- Novice troubleshooters struggling with complex electrical diagnostics
- Shoppers hoping to save money with generic aftermarket parts
Performance breakdown
OEM Compatibility
Guaranteed factory-spec fit for MasterTemp and Max-E-Therm heater series.
Sensing Precision
Delivers highly accurate temperature readings for consistent pool heating cycles.
Installation Ease
Straightforward plug-and-play design simplifies the replacement process for DIYers.
Build Durability
Robust construction withstands the harsh chemical environment of pool plumbing.
System Reliability
Prevents heater short-cycling by maintaining stable sensor communication.
Component Longevity
High-quality materials ensure long-term performance under constant thermal stress.
Key Specs
Manufacturer Part Number
42001-0053S
Item #
42001-0053S
Heater Type
Gas
Pool Type Compatibility
In Ground
Compatibility
Pentair MasterTemp, ETi, and Sta-Rite Max-E-Therm heaters
Heating Technology
Natural Gas Heater
Installation Type
In Ground
Know before you buy
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