42001-0052S / 476223 Pentair Ignition Control Module | MasterTemp & Max-E-Therm Heaters

Restore dependable ignition to your pool heater with the genuine Pentair Ignition Control Module 476223 (previously numbered 42001-0052S), a factory-specified replacement for MasterTemp and Max-E-Therm heating systems. This module manages the complete ignition cycle, ensuring your heater fires up promptly and continues to run with consistent reliability. Engineered for direct compatibility with Pentair heaters, it slots into place with minimal effort and brings your heating...

Pentair Rocker Switch Replacement | MiniMax Heater Parts | 470186

Restore dependable heater control with the Pentair 470186 Rocker Switch, a factory-original single pole, double throw (SPDT) component built for Pentair MiniMax pool heaters. This switch governs essential heater operations, serving as a direct interface between the user and the unit's electrical system for safe, responsive performance. Constructed from robust materials that stand up to the humidity, heat, and chemical exposure found around pool equipment...

U178-920P Pentair Drain Plug With O-Ring for MasterTemp & Sta-Rite Max-E-Therm Heaters

The Pentair U178-920P drain plug with O-ring is a factory-original replacement engineered for Pentair MasterTemp and Sta-Rite Max-E-Therm gas heaters, as well as a broad range of Sta-Rite pumps and multi-port valves. Shipped with a matched O-ring for immediate installation, this plug forms a secure, watertight barrier at the heater or pump drain port, guarding against water loss and potential internal corrosion. Its heavy-duty construction...

Pentair MasterTemp 125 Heater Manifold Kit – OEM Replacement Assembly | 474972

The Pentair 474972 Manifold Kit is a factory-specified replacement designed to restore correct water routing inside your Pentair MasterTemp 125 pool heater. The manifold directs incoming and outgoing water through the heat exchanger at the flow rates and pressures the heater requires for safe, efficient combustion and consistent temperature output. Swapping a worn or cracked manifold with this genuine Pentair kit helps eliminate flow restrictions,...

77707-0017 Pentair MasterTemp & Max-E-Therm Heater Connector Tube Kit

Maintain uninterrupted heating performance with the Pentair Connector Tube Kit, part number 77707-0017. This genuine Pentair replacement package is manufactured to fit MasterTemp and Max-E-Therm Pool and Spa Heater manifolds with precision. Inside, you will find a carefully engineered connector tube paired with a premium o-ring, both built to Pentair's exacting quality benchmarks for dependability and lasting service. Installing this kit helps preserve your heater's...

474971 Pentair Tube Sheet Coil Assembly | MasterTemp 125 Pool Heater Replacement

Restore your heater's heat exchange capability with the Pentair Tube Sheet Coil Assembly 474971, a comprehensive replacement kit built for Pentair MasterTemp 125 heaters. This assembly arrives with a coil sealing o-ring kit and all supporting hardware, giving you everything required for a thorough heat exchanger overhaul. Measuring 18-1/2 inches long, 10-1/2 inches tall, and 18-1/2 inches wide, this kit is dimensioned to slot directly...

42001-0104S Pentair MasterTemp & Max-E-Therm Heater Wiring Harness Kit

Achieve dependable, factory-spec electrical integration in your Pentair pool heater with the Pentair Wiring Harness Kit 42001-0104S. This comprehensive kit is designed to establish secure, high-integrity electrical pathways within MasterTemp and Max-E-Therm heater units, linking internal components with precision-routed wiring and a matched transformer. Built from materials rated for the thermal and electrical demands of pool heating equipment, this harness kit safeguards both operational reliability...

Pentair Thermostat Circuit Board | MiniMax & PowerMax Heater Replacement | 470179

Keep your pool or spa heater running at peak efficiency with the Pentair 470179 Thermostat Circuit Board, a genuine OEM electronic component engineered for the MiniMax, MiniMax Plus, and PowerMax series of heaters. This board serves as the central temperature management hub, continuously monitoring and adjusting water heat levels to deliver the comfort you expect from your heating system. It supports an extensive lineup of...

77707-0008 Pentair Kaowool Insulation Kit | MasterTemp & Max-E-Therm Heater Replacement

Restore your heater's thermal efficiency with the Pentair 77707-0008 Kaowool Insulation Kit. Specifically engineered for Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters, this kit provides fresh insulation material to replace degraded or deteriorating blankets. Proper insulation keeps heat where it belongs, inside the combustion chamber, reducing energy waste and protecting internal components from excessive temperature exposure that can shorten heater life. Key Benefits...

77707-0233 Pentair Tube Sheet Coil Assembly | MasterTemp & Max-E-Therm 300 Heaters

Return your 300 series heater to full thermal capacity with the Pentair Tube Sheet Coil Assembly 77707-0233, a factory-original heat exchanger replacement engineered for high-output heater models. This kit serves Pentair MasterTemp pool and spa heater models 300NA and 300LP, as well as the Pentair Sta-Rite Max-E-Therm NA and LP series pool/spa heater model 300. Shipped complete with a coil sealing o-ring kit and essential...

42002-0007S / 461105 Pentair MasterTemp & Max-E-Therm Control Board with 6 Button Pad

Take command of your pool heating with the OEM Pentair Control Board Kit, part 461105 (previously 42002-0007S), a key upgrade and replacement component for Pentair MasterTemp and Sta-Rite Max-E-Therm pool heaters. This complete kit delivers everything required for accurate temperature management and smooth day-to-day operation. It comes equipped with a six-button membrane pad for intuitive adjustments and built-in RS-485 connectivity that allows direct communication with...

475601 Pentair Stack Flue Sensor | Blue | For ETI 400 Gas Pool Heater

The genuine OEM Pentair Stack Flue Sensor 475601 serves as a critical safety device within the ETI 400 Gas Heater system. This sensor continuously tracks the temperature inside the stack flue, verifying that the heater stays within safe operational limits at all times. Blue color-coded wiring simplifies identification during setup and routine service inspections. Engineered for consistent, long-term reliability, this sensor plays a key role...

476081Z Pentair ETI 400 Gas Pool Heater Spark Electrodes Replacement

Restore dependable ignition to your Pentair ETI 400 Gas Heater with the genuine Spark Electrodes 476081Z. These factory-engineered electrodes produce a steady, uniform spark that ignites the burner quickly, keeping your pool water at the ideal temperature without hesitation. Their heavy-duty build withstands prolonged exposure to intense heat and corrosive pool chemistry, reducing the frequency of part swaps and preserving uninterrupted heating performance. Note: The...

475976 Pentair Ignition Control Module | ETi 400 Pool Heater Replacement Part

Keep your ETi 400 Heater starting consistently and running safely with the genuine Pentair Ignition Control Module 475976. This precision-engineered component governs the complete ignition sequence, managing the electrical signals that initiate heating while continuously verifying safe operating conditions throughout every cycle. Manufactured to Pentair’s exacting quality standards, the module is built from robust, weather-resistant materials that deliver reliable performance in outdoor pool environments. Simple,...

474200 Pentair Basic Manifold Kit - Max-E-Therm & MasterTemp Heater Replacement

Keep your pool or spa heater running at peak capacity with the Pentair Basic Manifold Kit, model 474200. Purpose-built for Max-E-Therm and MasterTemp heating units, this all-in-one kit delivers every component you need to properly service and install the manifold assembly. Each piece is manufactured from premium, corrosion-resistant materials that provide a precise, leak-free connection and stand up to years of continuous use. By replacing...

475998 Thermal Fuse by Pentair | ETI 400 Gas Pool Heater Safety Fuse

Protect your pool heating equipment with the Pentair Thermal Fuse 475998, a factory-original safety component engineered to sever the electrical circuit when heater temperatures climb to dangerous levels. This protective device activates at 187¡ F (86¡ C), instantly cutting power to guard against overheating and potential equipment damage. Once triggered, this single-use fuse requires complete replacement rather than resetting, guaranteeing that the protective mechanism remains...

42002-0024S Pentair Stack Flue Sensor | MasterTemp & Sta-Rite Max-E-Therm Heaters

The genuine OEM Pentair Stack Flue Sensor (SFS) 42002-0024S acts as a vital safety mechanism that triggers an automatic heater shutdown once flue gas temperatures hit 480° F (249° C). Designed to cap flue gas output at a maximum of 500 degrees Fahrenheit, this sensor guards against dangerous overheating conditions. It maintains full functionality across an ambient temperature span of -20°C to 105°C, making it...

Pentair ETI 400 Gas Heater Water Bypass Assembly — Part 475621

Protect your Pentair ETI 400 gas heater from excessive water flow with the genuine Water Bypass Assembly, part number 475621. This safety-critical component is required whenever the water flow rate through the heater exceeds the maximum 120 GPM threshold. Once the manual bypass valve is installed, you can fine-tune it to bring flow within the heater's safe operating range, preventing internal damage from overpressure. Designed...

42001-0063S Pentair High Limit Switch for MasterTemp & Max-E-Therm Pool Heaters

The genuine Pentair Hi Limit Switch 42001-0063S is a factory-grade safety device that monitors water temperature and triggers an immediate shutdown of the heat exchanger whenever the temperature exceeds the safe threshold of 135¡F. A failed switch typically causes your heater to display the HLS error code, signaling that immediate replacement is necessary. Because this switch is a one-time-use safety component, it cannot be reset...

42001-0053S Thermistor by Pentair | MasterTemp Sta-Rite Max-E-Therm ETI 400 Gas Heater Sensor

The Pentair Thermistor 42001-0053S is the OEM sensor responsible for relaying water temperature readings to your heater's control panel display. When your panel shows inaccurate or abnormally high temperature readings, a failing thermistor is typically the cause and replacement is the only remedy, as this component cannot be reset. Positioned within the manifold adapter inlet, this electronic temperature-sensing thermistor continuously monitors incoming water temperature. When...