Pentair
Pentair MasterTemp/Sta-Rite Pool Heater High Limit Switch | 42001-0063S
Best safety component for pool heater maintenance and repair.
Ensure your Pentair MasterTemp or Sta-Rite Max-E-Therm pool and spa heater operates safely and efficiently with this genuine OEM replacement Hi-Limit Switch (42001-0063S). This critical component helps prevent overheating by shutting down the heater when temperatures exceed safe limits. It is designed as a direct replacement for the original part, ensuring proper fit and function. Maintaining your heater with authentic parts is key to its longevity and performance. Keep your pool comfortably warm and your equipment protected with this reliable high limit switch.
$59.99
Owner Satisfaction
4.7
/ 5
Category Rank
7
/ 2958
#7 in Pool & Spa Accessories
Price vs Category Average
-82%
Below average
Who it's for
- Safety-conscious pool owners protecting their equipment and swimmers
- Pool owners prioritizing guaranteed compatibility and long-term reliability
- Service technicians needing straightforward, standardized repair components
Who should skip it
- Pool owners frustrated by frequent, unnecessary system shutdowns
- Budget-conscious owners seeking low-maintenance, permanent hardware solutions
- Thrifty shoppers looking for cost-effective aftermarket alternatives
Performance breakdown
OEM Compatibility
Guaranteed factory-spec fit for MasterTemp and Max-E-Therm heater systems.
Safety Reliability
Critical thermal cutoff protection prevents catastrophic heater overheating incidents.
Installation Simplicity
Straightforward design allows for quick, hassle-free replacement by most homeowners.
Build Durability
Robust construction withstands the harsh, moisture-heavy environment of pool equipment.
System Longevity
Authentic components preserve the operational lifespan of your expensive heater.
Temperature Precision
Maintains consistent thermal regulation for optimal pool and spa comfort.
Key Specs
High limit switch replacement
Fits Pentair Sta-Rite Max-E-Therm pool and spa heaters electrical system
Fits Pentair MasterTemp pool and spa heaters electrical systems
Part Number
42001-0063S
Manufacturer
Pentair
Weight
1.00 lbs
Compatibility
Max-E-Therm, MasterTemp Heater Electrical Systems
Brand
Pentair
Features
- Direct replacement for specific Pentair heaters
- Prevents overheating for enhanced safety
- Ensures heater longevity and performance
- Reliable temperature regulation
- Easy installation
- Genuine OEM Pentair part
- Maintains optimal pool temperature
- Protects heater electrical system
What customers say
This high limit switch is overwhelmingly praised as a perfect, functional replacement for Pentair MasterTemp and Sta-Rite heaters, quickly resolving critical lockout errors. Customers highlight the remarkable ease of installation, often completing the replacement themselves in minutes. This DIY capability delivers significant value by avoiding costly professional service calls. Reviewers confirm the component fits exactly, restoring full heater operation reliably. The consensus is that this necessary part is a high quality, dependable solution that provides excellent value for pool owners needing a fast, effective repair.
Know before you buy
A faulty high limit switch often causes your heater to shut down prematurely or display an error code related to temperature limits. If your heater refuses to ignite even when the water is cold, the switch may be stuck in an open position and require replacement.
This specific part, 42001-0063S, is designed specifically for Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters. Please check your heater's manual or the existing part number to ensure it matches your specific model series.
Yes, this is an authentic OEM replacement part manufactured by Pentair. Using genuine parts ensures the safety standards and electrical compatibility required for your specific heater model.
The switch is designed for easy installation, but it does involve working with the electrical components of your heater. If you are comfortable with basic pool equipment maintenance and have the necessary tools, it is a straightforward swap; otherwise, consult a pool technician to ensure proper installation.
The high limit switch acts as a critical safety mechanism that monitors the water temperature within the heater. If the temperature exceeds safe operating limits, the switch automatically cuts power to the heater to prevent overheating and potential damage to the unit.
Still have a question?
Ask Hayley anything about this product before you decide.