{"title":"Pentair MasterTemp Parts","description":"\u003cp\u003eGenuine Pentair OEM and quality generic replacement parts for the Pentair MasterTemp gas heater. Match the number on the parts diagram to find exactly what you need.\u003c\/p\u003e","products":[{"product_id":"thermal-regulator-kit-for-max-e-therm-and-mastertemp-heater-water-system","title":"Thermal Regulator Kit for Max-E-Therm and MasterTemp Heater Water System","description":"\u003cp class=\"MsoNormal\"\u003eRestore peak efficiency to your pool heating system with the \u003cb\u003ePentair Thermal Regulator Kit (77707-0010)\u003c\/b\u003e. This genuine replacement part is a critical safety and performance component designed specifically for \u003cb\u003eMasterTemp\u003c\/b\u003e and \u003cb\u003eSta-Rite Max-E-Therm\u003c\/b\u003e gas heaters. The thermal regulator acts as a thermostat for your heater’s internal water flow, ensuring that water only enters the heat exchanger once it has reached the optimal temperature. By preventing cold water from circulating too early, this kit eliminates \"condensation soot\" and thermal shock, significantly extending the lifespan of your heat exchanger and maintaining consistent, comfortable pool temperatures.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul type=\"disc\" style=\"margin-top: 0in;\"\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003ePrecision Temperature Control:\u003c\/b\u003e Regulates internal water flow to prevent condensation and protect the heat exchanger from corrosive low-temperature operation.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eGenuine Pentair Replacement:\u003c\/b\u003e Engineered to the exact manufacturer specifications for a perfect fit and reliable performance in MasterTemp and Max-E-Therm models.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eCorrosion-Resistant Materials:\u003c\/b\u003e Built with high-grade, durable components designed to withstand constant exposure to heat and pool chemicals.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eEnhanced Heater Efficiency:\u003c\/b\u003e Optimizes the heating cycle, ensuring your unit reaches desired temperatures faster while consuming less energy.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003ePrevents Heat Exchanger Damage:\u003c\/b\u003e Actively guards against the \"pitting\" and soot buildup that occur when heaters run too cold, saving you from expensive future repairs.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eSimple Drop-In Installation:\u003c\/b\u003e Designed for straightforward replacement within the manifold, allowing pool professionals or DIY homeowners to restore heater function quickly.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":51979741299004,"sku":"77707-0010","price":115.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/thermal-regulator-kit-for-max-e-therm-and-mastertemp-heater-water-system-square.jpg?v=1785953739"},{"product_id":"flameholder-kit-for-400-maxitherm-and-mastertemp-heater-burner-system","title":"Flameholder Kit for 400 Maxitherm and MasterTemp Heater Burner System","description":"\u003cp class=\"MsoNormal\"\u003eEnsure the safe and efficient operation of your pool heater's burner system with the genuine \u003cb\u003ePentair 77707-0204 Flame Holder Kit\u003c\/b\u003e. The flame holder is a critical safety component designed to precisely position the gas flame near the igniter and hold it stable during combustion, even under varying draft conditions.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis kit is specifically designed for the high-output \u003cb\u003e400,000 BTU\u003c\/b\u003e versions of both the popular \u003cb\u003ePentair MasterTemp\u003c\/b\u003e and \u003cb\u003eSta-Rite Max-E-Therm\u003c\/b\u003e heater models. The flame holder is a wear item that can degrade over time due to intense heat cycles; replacing it ensures proper ignition sequencing, prevents burner backfire, and maintains the heater's energy efficiency.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0in;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eGenuine OEM Part:\u003c\/b\u003e Authentic Pentair\/Sta-Rite component ensures perfect fit, compatibility, and reliable performance.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eSafety Critical Component:\u003c\/b\u003e Essential for safe operation, holding the flame in the optimal position for consistent ignition and combustion.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eCompatibility:\u003c\/b\u003e Designed exclusively for \u003cb\u003e400K BTU\u003c\/b\u003e MasterTemp and Max-E-Therm heaters (both natural gas and propane models).\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eDurable Materials:\u003c\/b\u003e Constructed from high-temperature resistant materials built to withstand the extreme environment of the heater's burner tray.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eRestores Efficiency:\u003c\/b\u003e Replacing a worn flame holder can resolve ignition issues, noisy startups, and burner performance problems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52212723876156,"sku":"77707-0204","price":230.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/flameholder-kit-for-400-maxitherm-and-mastertemp-heater-burner-system-square.png?v=1785953825"},{"product_id":"mastertemp-water-pressure-switch","title":"Mastertemp water pressure switch  42001-0060S","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eGenuine Pentair 42001-0060S Water Pressure Switch Replacement for MasterTemp \u0026amp; Max-E-Therm Heaters\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eEnsure the safe and efficient operation of your pool or spa heater with the genuine OEM \u003cb\u003ePentair 42001-0060S Water Pressure Switch\u003c\/b\u003e. This essential safety component is universally compatible with all Pentair MasterTemp and Sta-Rite Max-E-Therm heaters (including 125, 250, 300, 400 BTU models). The pressure switch verifies that adequate water flow is present before allowing the ignition sequence to begin, protecting the heat exchanger from overheating damage. A faulty switch often results in a \"Service Heater,\" \"SF,\" or \"FLO\" error code. This durable replacement part restores proper function and peace of mind to your pool heating system.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul type=\"disc\" style=\"margin-top: 0in;\"\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eEssential Safety \u0026amp; Flow Detection:\u003c\/b\u003e Acts as a vital safety interlock, ensuring sufficient water flow through the heater before activating the gas valve and ignition system.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eWide Compatibility:\u003c\/b\u003e A genuine replacement part compatible with most Pentair MasterTemp and Sta-Rite Max-E-Therm heaters (all BTU models, both natural gas and propane versions).\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eDurable Construction:\u003c\/b\u003e Built with rugged materials designed to withstand pool and spa water environments for reliable, long-lasting performance.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eOEM Quality:\u003c\/b\u003e A genuine factory-authorized Pentair\/Zodiac replacement part engineered for an exact fit and dependable function.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eDiagnostic Solution:\u003c\/b\u003e A common replacement item when the heater displays \"SF\" (Service Flow), \"FLO\" (Flow), or general heater error codes related to water circulation.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eEasy Installation:\u003c\/b\u003e Features a standard thread-mount design and electrical spade connectors for quick and hassle-free replacement, suitable for maintenance professionals and DIY users.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003ePrevents Dry Firing:\u003c\/b\u003e Crucial for preventing \"dry firing\" or overheating events that can cause catastrophic failure to the heater's heat exchanger.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52473307791676,"sku":"42001-0060S","price":95.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/mastertemp-water-pressure-switch-square.jpg?v=1785954059"},{"product_id":"mastertemp-igniter-with-gasket-kit-77707-0054","title":"Mastertemp Igniter with Gasket Kit   77707-0054","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eGenuine Pentair 77707-0054 Igniter \u0026amp; Gasket Kit for MasterTemp \u0026amp; Max-E-Therm Pool Heaters\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eRestore consistent and reliable ignition to your pool heating system with the genuine OEM \u003cb\u003ePentair 77707-0054 Igniter and Gasket Kit\u003c\/b\u003e. This essential maintenance kit is designed to fit all Pentair MasterTemp (125, 250, 300, 400 BTU models) and Sta-Rite Max-E-Therm heaters. The igniter is a high-quality silicone nitride component engineered for longevity and consistent performance. A failing igniter often results in delayed ignition, multiple ignition attempts, or the heater failing to fire up completely. This kit includes the igniter assembly and a new gasket for a secure, airtight seal, ensuring efficient and safe heater operation.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul type=\"disc\" style=\"margin-top: 0in;\"\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eReliable Ignition:\u003c\/b\u003e A crucial replacement part for quickly and reliably igniting the gas burner assembly, ensuring your heater starts on the first attempt.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eHigh-Quality Material:\u003c\/b\u003e Features a durable \u003cb\u003esilicone nitride\u003c\/b\u003e construction for long life and excellent resistance to thermal shock.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eComplete Kit:\u003c\/b\u003e Includes the replacement igniter assembly and a new gasket for an airtight seal, simplifying the repair process.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eWide Compatibility:\u003c\/b\u003e A genuine OEM replacement for all Pentair MasterTemp and Sta-Rite Max-E-Therm heaters (all BTU models, both natural gas and propane).\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eEasy Installation:\u003c\/b\u003e Designed for a direct replacement and hassle-free installation with standard wire connections.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eDiagnostic Solution:\u003c\/b\u003e Often solves issues where the heater attempts to ignite multiple times but fails to fire, or displays ignition-related error codes.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eOEM Quality:\u003c\/b\u003e Genuine factory-authorized Pentair\/Zodiac part engineered for exact fit and maximum dependability.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52473328206140,"sku":"77707-0054","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/mastertemp-igniter-with-gasket-kit-77707-0054-square.jpg?v=1785954061"},{"product_id":"mastertemp-140-degree-automatic-gas-shut-ags-switch-42002-0025s","title":"Mastertemp 140 Degree Automatic Gas Shut (AGS) Switch   42002-0025S","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eGenuine Pentair 42002-0025S 140°F Automatic Gas Shut (AGS) Switch for MasterTemp 125 Heaters\u003c\/b\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eEnsure the safety of your compact heating system with the genuine OEM \u003cb\u003ePentair 42002-0025S Automatic Gas Shut (AGS) Switch\u003c\/b\u003e. This specialized high-limit sensor is engineered exclusively for the \u003cb\u003ePentair MasterTemp 125\u003c\/b\u003e pool and spa heater models. The AGS acts as a crucial thermal safety device, automatically stopping the gas flow to the burner if internal temperatures within the heat exchanger reach a critical \u003cb\u003e140°F (60°C)\u003c\/b\u003e. Constructed with durable materials for longevity in outdoor environments, this non-resettable thermal fuse is an essential replacement part to prevent overheating, protect your equipment, and maintain a safe pool experience. \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul type=\"disc\" style=\"margin-top: 0in;\"\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eSpecific Compatibility:\u003c\/b\u003e Designed exclusively for use with the \u003cb\u003ePentair MasterTemp 125\u003c\/b\u003e (NG and LP) model heaters. \u003ci\u003eNote: Not for use with 250\/300\/400 models.\u003c\/i\u003e\n\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eCritical Safety Device:\u003c\/b\u003e Automatically shuts off the gas supply to the heater if the water temperature reaches or exceeds \u003cb\u003e140°F (60°C)\u003c\/b\u003e, preventing dangerous overheating.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eNon-Resettable Design:\u003c\/b\u003e This is a thermal fuse-style, non-resettable switch that must be replaced after being triggered by an overheat event.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eDurable Construction:\u003c\/b\u003e Made from quality, corrosion-resistant materials for reliable operation in humid, outdoor pool environments.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eOEM Quality:\u003c\/b\u003e A genuine factory-authorized Pentair replacement part ensures a perfect fit, reliable performance, and proper system function.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eEasy Installation:\u003c\/b\u003e Features a simple, thread-mount design for quick and hassle-free replacement.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003ePrevents Damage:\u003c\/b\u003e Protects the heat exchanger and other internal components from the significant damage caused by excessive heat exposure. \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52473337545020,"sku":"42002-0025S","price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/mastertemp-140-degree-automatic-gas-shut-ags-switch-42002-0025s-square.jpg?v=1785954061"},{"product_id":"mastertemp-high-limit-switch-42001-0063s","title":"Mastertemp High Limit Switch   42001-0063S","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eGenuine Pentair 42001-0063S High Limit Switch Replacement for MasterTemp \u0026amp; Max-E-Therm Heaters\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eEnsure the safe and reliable operation of your pool or spa heating system with the genuine OEM \u003cb\u003ePentair 42001-0063S High Limit Switch\u003c\/b\u003e. This critical safety device, sometimes referred to as a thermal cutout (TCO), is designed to automatically shut down the heater if water temperatures exceed safe limits (typically 140°F or 150°F). It is compatible with all Pentair MasterTemp (125, 250, 300, 400 BTU models) and Sta-Rite Max-E-Therm pool and spa heaters. Constructed with durable brass materials, this non-resettable switch is an essential protective measure against overheating, preventing damage to internal components and ensuring peace of mind.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0in;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eCritical Safety Component:\u003c\/b\u003e Automatically interrupts power to the heater if the water temperature exceeds a safe threshold (typically around \u003cb\u003e140°F - 150°F\u003c\/b\u003e), preventing overheating and potential damage.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eWide Compatibility:\u003c\/b\u003e A genuine replacement part compatible with most Pentair MasterTemp and Sta-Rite Max-E-Therm heaters (all BTU models, both natural gas and propane versions).\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eDurable Construction:\u003c\/b\u003e Made from corrosion-resistant \u003cb\u003ebrass\u003c\/b\u003e material for a secure, long-lasting fit and reliable performance in aquatic environments.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eNon-Resettable Design:\u003c\/b\u003e This is a non-resettable fuse-style high limit switch, meaning it must be replaced if triggered by an overheat event.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eEasy Installation:\u003c\/b\u003e Features a simple, thread-mount design (typically 1\/4\" NPT) and two male spade electrical connectors for quick and hassle-free installation.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eOEM Quality:\u003c\/b\u003e A genuine factory-authorized Pentair\/Zodiac replacement part engineered for an exact fit and dependable performance.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eDiagnostic Aid:\u003c\/b\u003e Often associated with diagnostic error codes related to high temperature or overheating events, signaling the need for replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52473343803708,"sku":"42001-0063S","price":77.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/mastertemp-high-limit-switch-42001-0063s-square.jpg?v=1785954064"},{"product_id":"mastertemp-thermistor-42001-0053s","title":"Mastertemp Thermistor  42001-0053S","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eGenuine Pentair 42001-0053S Thermistor for MasterTemp \u0026amp; Max-E-Therm Pool Heaters \u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eEnsure accurate water temperature monitoring and efficient operation of your pool heating system with the genuine OEM Pentair 42001-0053S thermistor. This crucial replacement part is designed for seamless integration with Pentair MasterTemp (including 125, 250, 300, 400 BTU models) and Sta-Rite Max-E-Therm (200, 333, 400 BTU models) pool and spa heaters. Constructed from durable, corrosion-resistant stainless steel, this non-resettable sensor accurately detects water temperature and sends precise readings to the heater's control board, helping to maintain consistent water temperature, prevent system errors (like the E01 code), and prolong the lifespan of your heater. \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul type=\"disc\" style=\"margin-top: 0in;\"\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eAccurate Temperature Monitoring: \u003c\/b\u003eAccurately measures the water temperature entering the heater's manifold and sends precise, real-time data to the control system for efficient operation.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eWide Compatibility: \u003c\/b\u003eA direct replacement for most Pentair MasterTemp and Sta-Rite Max-E-Therm heaters, including all BTU models for both natural gas and propane versions.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eDurable Construction: \u003c\/b\u003eMade from high-quality, corrosion-resistant stainless steel for dependable performance and longevity in harsh pool and spa environments.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eEssential Safety Component: \u003c\/b\u003ePlays a vital role in the heater's safety systems by ensuring the water temperature does not exceed safe limits (e.g., 104°F).\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eEasy Installation: \u003c\/b\u003eFeatures two electrical connectors and a simple, thread-mount design for quick and hassle-free replacement, suitable for both professionals and DIY enthusiasts.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eDiagnostic Function: \u003c\/b\u003eA common replacement item when the heater's control panel displays an E01 error code, indicating a faulty temperature sensor.\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\n\u003cb\u003eOperating Range: \u003c\/b\u003eAccording to sources like Poolandspasupplystore.com, it operates effectively within a temperature range of -20°C to 80°C (-4°F to 176°F). \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52473350259004,"sku":"42001-0053S","price":95.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/mastertemp-thermistor-42001-0053s-square.jpg?v=1785954065"},{"product_id":"mastertemp-6-button-control-board-kit-461105z","title":"Mastertemp 6-Button Control Board Kit  461105Z","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eGenuine Pentair 473731Z Dual Run Capacitor for UltraTemp \u0026amp; ThermalFlo Heat Pumps \u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eRestore your pool heat pump's motor function with the genuine OEM \u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003ePentair 473731Z dual run capacitor. This essential electrical component is rated at 80\/7.5 MFD (microfarads) and 440 Volts and is designed specifically for Pentair UltraTemp and ThermalFlo heat pumps (models 70, 90, 110, 120, 120HC, 140, 140HC only, excluding 120C and 140C). A failing capacitor can prevent your compressor or fan motor from starting, leading to system failure. This authentic Pentair replacement part ensures optimal performance, reliable motor starts, and long-lasting durability for your heat pump. \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0in;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eCapacitance Rating: \u003c\/b\u003e80\/7.5 microfarads (uF or MFD).\u003cb\u003e\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eVoltage Rating: \u003c\/b\u003eRated for 440 Volts AC (VAC) operation, which is a common and robust rating for HVAC applications.\u003cb\u003e\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eFunction: \u003c\/b\u003eDual-run capacitor designed to support both the main compressor and the fan motor within the heat pump system.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eCompatibility: \u003c\/b\u003eA genuine OEM replacement part for Pentair UltraTemp and ThermalFlo heat pump models (70, 90, 110, 120, 120HC, 140, 140HC).\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eDurable Material: \u003c\/b\u003eFeatures robust aluminum material construction for durability in outdoor pool environments.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52473358680380,"sku":"461105Z","price":650.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/mastertemp-6-button-control-board-kit-461105z-square.jpg?v=1785954065"},{"product_id":"77707-0016-fit-for-manifold-replacement-kit-pool-and-spa-heater-durable-and-efficient-compatible-with-mastertemp-max-e-therm-400-includes-all-essential-parts","title":"77707-0016 Fit for Manifold Replacement Kit Pool and Spa Heater - Durable and Efficient- Compatible with Mastertemp\/Max-E-Therm 400 - Includes All Essential Parts","description":"\u003cp data-end=\"605\" data-start=\"201\"\u003eThe 77707-0016 Manifold Replacement Kit is designed for compatible 400-series pool and spa heaters that require replacement of the manifold and sensor components. This complete kit includes essential switches, a thermistor, and a bypass valve component to help restore proper heater operation and performance. Constructed with heat-resistant materials, it is built for durability in demanding pool heater environments.\u003c\/p\u003e\n\u003ch2 data-end=\"630\" data-start=\"612\" data-section-id=\"100a1fs\"\u003e Key Features\u003c\/h2\u003e\n\u003cul data-end=\"1208\" data-start=\"632\"\u003e\n\u003cli data-end=\"714\" data-start=\"632\" data-section-id=\"1hemqnc\"\u003e\n\u003cstrong data-end=\"657\" data-start=\"634\"\u003eWide Compatibility:\u003c\/strong\u003e Designed for compatible 400-series pool and spa heaters.\u003c\/li\u003e\n\u003cli data-end=\"850\" data-start=\"715\" data-section-id=\"1yrh4i0\"\u003e\n\u003cstrong data-end=\"746\" data-start=\"717\"\u003eComplete Replacement Kit:\u003c\/strong\u003e Includes manifold bypass valve, pressure switch, gas shutoff switch, high limit switch, and thermistor.\u003c\/li\u003e\n\u003cli data-end=\"961\" data-start=\"851\" data-section-id=\"9ayaa9\"\u003e\n\u003cstrong data-end=\"893\" data-start=\"853\"\u003eDurable Heat-Resistant Construction:\u003c\/strong\u003e Built for long-lasting use in high-temperature heater applications.\u003c\/li\u003e\n\u003cli data-end=\"1098\" data-start=\"962\" data-section-id=\"1fzp8y8\"\u003e\n\u003cstrong data-end=\"1004\" data-start=\"964\"\u003eSupports Efficient Heater Operation:\u003c\/strong\u003e Helps maintain proper flow sensing, temperature monitoring, and safety control functionality.\u003c\/li\u003e\n\u003cli data-end=\"1208\" data-start=\"1099\" data-section-id=\"72wpzb\"\u003e\n\u003cstrong data-end=\"1134\" data-start=\"1101\"\u003eInstallation-Friendly Design:\u003c\/strong\u003e Includes multiple essential replacement components in one convenient kit.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":53051115602236,"sku":"0a47f235-cb61-45fc-9032-c60ee06c6d37","price":346.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/77707-0016-fit-for-manifold-replacement-kit-pool-and-spa-heater-durable-and-efficient-compatible-with-mastertemp-max-e-therm-400-includes-all-essential-parts-square.jpg?v=1785954191"},{"product_id":"pool-heater-manifold-assembly-replacement-kit-for-pentair-mastertemp-175-200-250-300-400-sta-rite-max-e-therm-sr200-sr333-sr400-77707-0205-77707-0206-77707-0014-77707-0015-77707-0016","title":"Pool Heater Manifold Assembly Replacement Kit for Pentair Mastertemp 175, 200, 250, 300, 400 \u0026 Sta-Rite Max-E-Therm SR200, SR333, SR400, 77707-0205, 77707-0206, 77707-0014, 77707-0015, 77707-0016","description":"\u003cp data-end=\"614\" data-start=\"206\"\u003eThe 77707-0205 Pool Heater Manifold Assembly Replacement Kit is designed for compatible pool and spa heater systems ranging from 175 to 400 models. This complete replacement assembly includes the manifold body, backplate, gaskets, sensors, drain plug, and mounting hardware for streamlined installation and reliable operation. Built for durability and dependable performance in demanding heater environments.\u003c\/p\u003e\n\n\u003ch2 data-end=\"639\" data-section-id=\"100a1fs\" data-start=\"621\"\u003eKey Features\u003c\/h2\u003e\n\n\u003cul data-end=\"1206\" data-start=\"641\"\u003e\n\t\u003cli data-end=\"754\" data-section-id=\"gg67qh\" data-start=\"641\"\u003e\n\u003cstrong data-end=\"673\" data-start=\"643\"\u003eWide Heater Compatibility:\u003c\/strong\u003e Designed for compatible 175, 200, 250, 300, and 400-series pool and spa heaters.\u003c\/li\u003e\n\t\u003cli data-end=\"875\" data-section-id=\"156hln\" data-start=\"755\"\u003e\n\u003cstrong data-end=\"796\" data-start=\"757\"\u003eMultiple Part Number Compatibility:\u003c\/strong\u003e Replaces several common manifold assembly part numbers for flexible servicing.\u003c\/li\u003e\n\t\u003cli data-end=\"984\" data-section-id=\"1fgqzwr\" data-start=\"876\"\u003e\n\u003cstrong data-end=\"908\" data-start=\"878\"\u003eComplete Installation Kit:\u003c\/strong\u003e Includes manifold body, backplate, gaskets, sensors, drain plug, and bolts.\u003c\/li\u003e\n\t\u003cli data-end=\"1097\" data-section-id=\"10lag6e\" data-start=\"985\"\u003e\n\u003cstrong data-end=\"1024\" data-start=\"987\"\u003eDurable Replacement Construction:\u003c\/strong\u003e Built to replicate original fit and function for dependable performance.\u003c\/li\u003e\n\t\u003cli data-end=\"1206\" data-section-id=\"1hux4tt\" data-start=\"1098\"\u003e\n\u003cstrong data-end=\"1136\" data-start=\"1100\"\u003eSimplified Installation Process:\u003c\/strong\u003e Comprehensive assembly helps reduce installation time and complexity.\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Generic","offers":[{"title":"Default Title","offer_id":53051227930940,"sku":"71a13c0e-1769-4caa-b017-295327b8d975","price":121.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/71zsqbrdZiL._AC_SL1500.jpg?v=1778586191"},{"product_id":"pentair-461105-mastertemp-max-e-therm-control-board-kit","title":"Pentair 461105 MasterTemp\/Max-E-Therm Control Board Kit","description":"\u003cp\u003eThe Pentair 461105 is a genuine OEM control board kit engineered to restore full electronic control functions on Sta‑Rite MasterTemp and Max‑E‑Therm pool heaters running on natural gas or propane. This 6-button replacement kit includes the ignition circuitry, safety interlocks, and relay components needed to manage the heating sequence and ensure reliable burner ignition. It's a direct plug-and-play swap that supersedes the older 42002-0007S board while remaining fully compatible with existing MasterTemp heaters, saving technicians time on rewiring and troubleshooting.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDual fuel compatibility – works with both natural gas (NG) and liquid propane (LP) heater models\u003c\/li\u003e\n\u003cli\u003eDirect OEM replacement engineered specifically for Sta‑Rite MasterTemp and Max‑E‑Therm heaters\u003c\/li\u003e\n\u003cli\u003eRestores full control functions including ignition module, safety switches, and relay circuitry\u003c\/li\u003e\n\u003cli\u003ePlug-and-play design with 6-button membrane keypad and RS-485 communication for automation integration\u003c\/li\u003e\n\u003cli\u003eBuilt for durability to withstand heat, moisture, and demanding pool equipment environments\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":53980072575292,"sku":"461105","price":618.13,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/Authentic-pentair-MasterTemp-Max-E-Therm-Heater-Control-Board-461105_ce8f7ba5-7026-45cc-a80c-3af5cc1f2ea2.webp?v=1786470580"},{"product_id":"pentair-77707-0054-igniter-gasket-kit-max-e-therm-mastertemp","title":"Pentair 77707-0054 Igniter \u0026 Gasket Kit - Max-E-Therm\/MasterTemp","description":"\u003cp\u003eThe Pentair 77707-0054 Igniter with Gasket Kit is a genuine OEM replacement part engineered to restore reliable ignition performance in Pentair Sta-Rite Max-E-Therm and Pentair MasterTemp (including MasterTemp 125) pool and spa heaters. Manufactured with the same high-quality materials as the original factory component, this kit ensures a proper fit and long-lasting durability. It's a straightforward drop-in fix for heaters that are failing to ignite or cycling improperly due to a worn igniter. The kit includes the matching igniter gasket for a complete, leak-free installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Pentair OEM igniter replacement kit\u003c\/li\u003e\n\u003cli\u003eFits Pentair Sta-Rite Max-E-Therm and Pentair MasterTemp pool\/spa heaters\u003c\/li\u003e\n\u003cli\u003eIncludes igniter gasket for a proper seal\u003c\/li\u003e\n\u003cli\u003eCompact size: 9\" L x 5\" W x 3\" H\u003c\/li\u003e\n\u003cli\u003eShips quickly, typically within 1-2 business days\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":53980233007420,"sku":"77707-0054","price":98.07,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/0252\/4220\/files\/web-image-1786473551284.jpg?v=1786473568"}],"url":"https:\/\/msppool.com\/collections\/pentair-mastertemp-parts.oembed","provider":"MSP Supply","version":"1.0","type":"link"}