{"product_id":"pentair-mastertemp-400k-high-performance-pool-and-spa-heater-ec-462028","title":"Pentair MasterTemp 400K High Performance Pool \u0026 Spa Heater Natural Gas | EC-462028","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003ePentair MasterTemp 400K High Performance Pool \u0026amp; Spa Heater | EC-462028\u003c\/strong\u003e is a powerful natural gas heater designed for fast, dependable heating in residential pool and spa systems. With \u003cstrong\u003e400,000 BTU\u003c\/strong\u003e heating capacity, this model is ideal for larger pools, spas, and pool\/spa combinations that need rapid heat-up performance.\u003c\/p\u003e\n\u003cp\u003eThe MasterTemp series is known for its compact footprint, quiet operation, energy-efficient performance, and user-friendly digital controls. This natural gas model uses \u003cstrong\u003epremix combustion technology\u003c\/strong\u003e, \u003cstrong\u003eelectronic ignition\u003c\/strong\u003e, and a \u003cstrong\u003ecopper heat exchanger\u003c\/strong\u003e to deliver efficient heat transfer and reliable operation.\u003c\/p\u003e\n\u003cp\u003eIts rotatable digital display and compact cabinet make installation and service easier on many equipment pads, while Low NOx operation helps meet modern emissions requirements.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eIdeal For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eResidential inground pools\u003c\/li\u003e\n\u003cli\u003ePool and spa combination systems\u003c\/li\u003e\n\u003cli\u003eLarger pools requiring fast heat-up\u003c\/li\u003e\n\u003cli\u003eNatural gas pool heating systems\u003c\/li\u003e\n\u003cli\u003eReplacing older natural gas heaters\u003c\/li\u003e\n\u003cli\u003eCustomers wanting digital heater controls\u003c\/li\u003e\n\u003cli\u003eLow NOx heater replacement applications\u003c\/li\u003e\n\u003cli\u003eCompact equipment pad installations\u003c\/li\u003e\n\u003cli\u003ePool owners wanting quiet heater operation\u003c\/li\u003e\n\u003cli\u003eProfessional pool heater installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e400,000 BTU heating capacity\u003c\/strong\u003e — delivers strong heating performance for pools and spas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural gas operation\u003c\/strong\u003e — designed for properties with compatible natural gas service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow NOx certified design\u003c\/strong\u003e — engineered for cleaner combustion and reduced emissions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremix combustion technology\u003c\/strong\u003e — supports fast and efficient warm-ups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronic ignition\u003c\/strong\u003e — reliable startup without a standing pilot light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital control display\u003c\/strong\u003e — easy-to-use interface for temperature control and system monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotating control panel\u003c\/strong\u003e — controls can rotate to multiple positions for easier viewing and service access.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact cabinet design\u003c\/strong\u003e — helps fit smaller or crowded equipment pads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRustproof composite exterior\u003c\/strong\u003e — built for outdoor pool equipment environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet operation\u003c\/strong\u003e — designed for a more comfortable poolside experience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper heat exchanger\u003c\/strong\u003e — provides efficient heat transfer for standard pool and spa applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomation compatible\u003c\/strong\u003e — works with compatible pool and spa automation systems when properly configured.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eBenefits\u003c\/h2\u003e\n\u003cp\u003eThe Pentair EC-462028 MasterTemp 400K Natural Gas Heater helps extend the swim season and makes spas more enjoyable by delivering rapid water heating. Its 400K BTU output provides strong heat recovery, making it a popular choice for pool\/spa combinations and larger residential pool systems.\u003c\/p\u003e\n\u003cp\u003eThe digital display and indicator lights make operation simple, while the rotating control panel helps installers position the controls where they are easiest to access. The compact cabinet is useful for tight equipment pads, and the rustproof exterior supports long-term outdoor performance.\u003c\/p\u003e\n\u003cp\u003eFor pool professionals, the MasterTemp platform provides a dependable, service-friendly natural gas heater with proven Pentair performance and strong residential heating capacity.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003ePentair MasterTemp 400K High Performance Pool \u0026amp; Spa Heater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eMasterTemp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eEC-462028\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelated Part Number\u003c\/td\u003e\n\u003ctd\u003e460736\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eEC-462028\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC \/ GTIN\u003c\/td\u003e\n\u003ctd\u003e788379887346\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePool and spa gas heater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeater Type\u003c\/td\u003e\n\u003ctd\u003eNatural gas heater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Type\u003c\/td\u003e\n\u003ctd\u003eNatural gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBTU Input\u003c\/td\u003e\n\u003ctd\u003e400,000 BTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBTU Class\u003c\/td\u003e\n\u003ctd\u003e400K BTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIgnition Type\u003c\/td\u003e\n\u003ctd\u003eElectronic ignition \/ hot surface ignition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Type\u003c\/td\u003e\n\u003ctd\u003eDigital control display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Panel\u003c\/td\u003e\n\u003ctd\u003eRotating control panel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmissions Rating\u003c\/td\u003e\n\u003ctd\u003eLow NOx certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCombustion System\u003c\/td\u003e\n\u003ctd\u003ePremix combustion technology\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat Exchanger Material\u003c\/td\u003e\n\u003ctd\u003eCopper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeader Material Reference\u003c\/td\u003e\n\u003ctd\u003ePolymer headers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e120\/240V, depending on installation configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlumbing Connection\u003c\/td\u003e\n\u003ctd\u003e2\" water connections \/ unions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Location\u003c\/td\u003e\n\u003ctd\u003eOutdoor or approved properly vented indoor installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCabinet Type\u003c\/td\u003e\n\u003ctd\u003eRustproof composite exterior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprox. Dimensions\u003c\/td\u003e\n\u003ctd\u003e21\" L x 21\" W x 28\" H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003ePool and spa heating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePool Type\u003c\/td\u003e\n\u003ctd\u003eResidential inground pool and spa systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutomation Compatibility\u003c\/td\u003e\n\u003ctd\u003eCompatible with pool and spa automation systems when properly configured\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEquipment Category\u003c\/td\u003e\n\u003ctd\u003ePool heaters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProfessional Installation Recommended\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold As\u003c\/td\u003e\n\u003ctd\u003eEach\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2\u003eIncluded Components\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Pentair MasterTemp 400K natural gas pool and spa heater\u003c\/li\u003e\n\u003cli\u003eIntegrated digital control display\u003c\/li\u003e\n\u003cli\u003eElectronic ignition system\u003c\/li\u003e\n\u003cli\u003ePremix combustion burner system\u003c\/li\u003e\n\u003cli\u003eInternal copper heat exchanger and header assembly\u003c\/li\u003e\n\u003cli\u003eManufacturer-supplied installation documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNatural gas line, gas shutoff valve, regulator if required, electrical wiring, bonding materials, venting components, plumbing valves, unions, check valves, pressure relief valve if required by local code, equipment pad materials, automation wiring, and installation labor are sold separately unless specifically included by the supplier.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatibility Notes\u003c\/h2\u003e\n\u003cp\u003eThis heater is designed for compatible \u003cstrong\u003enatural gas pool and spa heating systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eCommon application references include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eResidential inground pools\u003c\/li\u003e\n\u003cli\u003ePool\/spa combination systems\u003c\/li\u003e\n\u003cli\u003eNatural gas equipment pads\u003c\/li\u003e\n\u003cli\u003eReplacing compatible 400K BTU natural gas heaters\u003c\/li\u003e\n\u003cli\u003eCompact heater retrofit installations\u003c\/li\u003e\n\u003cli\u003eLow NOx natural gas heating applications\u003c\/li\u003e\n\u003cli\u003eAutomation-connected pool and spa systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways confirm fuel type, BTU requirement, gas line sizing, regulator requirements, electrical service, water flow, venting needs, elevation requirements, and local code requirements before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eThis heater must be installed by a qualified pool professional, licensed gas technician, or licensed contractor as required by local code. Proper installation requires correct natural gas supply sizing, gas pressure verification, electrical wiring, bonding, grounding, water flow verification, plumbing layout, combustion air, and venting where required.\u003c\/p\u003e\n\u003cp\u003eBefore installation, confirm that the fuel type is \u003cstrong\u003enatural gas\u003c\/strong\u003e and that the gas supply can support a \u003cstrong\u003e400,000 BTU\u003c\/strong\u003e heater.\u003c\/p\u003e\n\u003cp\u003eWater chemistry must be maintained within recommended ranges to protect the copper heat exchanger and preserve heater performance. Improper water balance, poor flow, incorrect gas pressure, or improper installation can damage the heater and may void warranty coverage.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCustomer-Facing Q\u0026amp;A\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the Pentair EC-462028?\u003c\/strong\u003e\u003cbr\u003eA: It is a Pentair MasterTemp 400K natural gas pool and spa heater rated at 400,000 BTU.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the SKU?\u003c\/strong\u003e\u003cbr\u003eA: The SKU is \u003cstrong\u003eEC-462028\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the UPC \/ GTIN?\u003c\/strong\u003e\u003cbr\u003eA: The UPC \/ GTIN is \u003cstrong\u003e788379887346\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the related Pentair part number?\u003c\/strong\u003e\u003cbr\u003eA: The related part number is \u003cstrong\u003e460736\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What fuel type does this heater use?\u003c\/strong\u003e\u003cbr\u003eA: This model uses \u003cstrong\u003enatural gas\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this a propane heater?\u003c\/strong\u003e\u003cbr\u003eA: No. This is the natural gas model. Propane versions use different model numbers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many BTUs is this heater?\u003c\/strong\u003e\u003cbr\u003eA: This heater is rated at \u003cstrong\u003e400,000 BTU\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this Low NOx certified?\u003c\/strong\u003e\u003cbr\u003eA: Yes. This MasterTemp model is commonly listed as Low NOx certified.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it have electronic ignition?\u003c\/strong\u003e\u003cbr\u003eA: Yes. It uses electronic ignition \/ hot surface ignition and does not require a standing pilot light.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this heater have digital controls?\u003c\/strong\u003e\u003cbr\u003eA: Yes. It includes a digital control display with user-friendly operation and status monitoring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the control panel rotatable?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The control panel can rotate to multiple positions for easier viewing and installation access.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What heat exchanger does this model use?\u003c\/strong\u003e\u003cbr\u003eA: This standard MasterTemp model uses a \u003cstrong\u003ecopper heat exchanger\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this heater compact?\u003c\/strong\u003e\u003cbr\u003eA: Yes. MasterTemp heaters are known for a compact footprint, commonly referenced around \u003cstrong\u003e21\" x 21\" x 28\"\u003c\/strong\u003e for this model.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this connect to pool automation?\u003c\/strong\u003e\u003cbr\u003eA: Yes. It can work with compatible pool and spa automation systems when properly installed and configured.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should this heater be professionally installed?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Professional installation is strongly recommended because this heater requires proper gas, electrical, plumbing, venting, bonding, and safety setup.\u003c\/p\u003e\n\u003csection id=\"psd-manuals-sell-sheets\"\u003e\u003ch2\u003eManuals \u0026amp; Sell Sheets\u003c\/h2\u003e\n\u003cp\u003eManufacturer reference documents for this equipment family. Confirm your exact model and production revision before use.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/online.flippingbook.com\/view\/3145380\/\" target=\"_blank\" rel=\"noopener\"\u003eSell sheet: Brochure | Gas Pool Heaters Family Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/online.flippingbook.com\/view\/60126269\/\" target=\"_blank\" rel=\"noopener\"\u003eSell sheet: Brochure | MasterTemp High Performance Heaters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pentair.com\/content\/dam\/extranet\/nam\/pentair-pool\/residential\/heaters\/mastertemp\/manual\/mastertemp-heater-manual-english.pdf\" target=\"_blank\" rel=\"noopener\"\u003eManual: MasterTemp Installation and User's Guide - English\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pentair.com\/content\/dam\/extranet\/nam\/pentair-pool\/residential\/heaters\/mastertemp1\/mastertemp-max-e-therm-heater-direct-air-intake-duct-3-inch-pvc-pipe-kit-installation-instructions.pdf\" target=\"_blank\" rel=\"noopener\"\u003eManual: MasterTemp and Max-E-Therm Direct Air Intake Duct Kit Installation Instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pentair.com\/content\/dam\/extranet\/nam\/pentair-pool\/residential\/heaters\/heater-new-installation-checklist.pdf\" target=\"_blank\" rel=\"noopener\"\u003eManual: Heater Checklist\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pentair.com\/content\/dam\/extranet\/nam\/pentair-pool\/residential\/heaters\/mastertemp\/manual\/archive\/Pentair%20MasterTemp%20Heater%20Submittal%20Data.pdf\" target=\"_blank\" rel=\"noopener\"\u003eManual: Submittal Data\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":53264606921014,"sku":"EC-462028","price":4789.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1167\/9798\/files\/PENEC462028_5.avif?v=1767807642","url":"https:\/\/poolsupplydepot.net\/products\/pentair-mastertemp-400k-high-performance-pool-and-spa-heater-ec-462028","provider":"Pool Supply Depot","version":"1.0","type":"link"}