{"product_id":"pentair-mastertemp-125-high-performance-heater-125-000-btus-natural-gas-ec-462024","title":"Pentair | EC-462024 | MasterTemp 125 High Performance Heater | 125,000 BTU Natural Gas","description":"\u003c!--split--\u003e\n\u003cp data-start=\"118\" data-end=\"601\"\u003eThe Pentair EC-462024 MasterTemp 125 High Performance Heater is a compact, energy-efficient natural gas pool and spa heater rated at 125,000 BTU. Designed for bodies of water up to 15,000 gallons, this heater utilizes advanced premixed combustion technology to deliver up to 82% thermal efficiency. Its lightweight, corrosion-resistant enclosure and digital control interface provide reliable heating performance and simplified operation for residential pool and spa installations.\u003c\/p\u003e\n\u003cp data-start=\"603\" data-end=\"645\"\u003e────────────────────────────────────────\u003c\/p\u003e\n\u003cp data-start=\"647\" data-end=\"661\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"663\" data-end=\"1283\"\u003e• 125,000 BTU natural gas heater designed for pools and spas up to 15,000 gallons.\u003cbr data-start=\"745\" data-end=\"748\"\u003e• 82% thermal efficiency using premixed gas combustion technology.\u003cbr data-start=\"814\" data-end=\"817\"\u003e• 120\/240V electrical configuration with hot surface ignition system.\u003cbr data-start=\"886\" data-end=\"889\"\u003e• Compact design: 31.5\" L x 21\" W x 23\" H for space-efficient installation.\u003cbr data-start=\"964\" data-end=\"967\"\u003e• Lightweight construction at approximately 80 lbs for easier handling.\u003cbr data-start=\"1038\" data-end=\"1041\"\u003e• Corrosion- and UV-resistant composite enclosure for outdoor durability.\u003cbr data-start=\"1114\" data-end=\"1117\"\u003e• Advanced digital display\/controller for simplified programming and monitoring.\u003cbr data-start=\"1197\" data-end=\"1200\"\u003e• Certified for low NOx emissions and compliant with modern efficiency standards.\u003c\/p\u003e\n\u003cp data-start=\"1285\" data-end=\"1327\"\u003e────────────────────────────────────────\u003c\/p\u003e\n\u003cp data-start=\"1329\" data-end=\"1347\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1349\" data-end=\"1822\"\u003eThe Pentair EC-462024 MasterTemp 125 is engineered to provide efficient and reliable heating for smaller residential pools, spas, and aboveground applications. Featuring a fully integrated digital control panel, the unit allows precise temperature adjustment and system monitoring through an easy-to-read rotating display. The heater operates with a hot surface ignition system, eliminating the need for a standing pilot while enhancing operational safety and efficiency.\u003c\/p\u003e\n\u003cp data-start=\"1824\" data-end=\"2392\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eBuilt with a compact footprint and corrosion-resistant housing, the MasterTemp 125 is designed for flexible outdoor installation with 1-1\/2\" plumbing connections. Its premixed combustion system maximizes fuel efficiency while maintaining stable heat output. The heater is suitable for natural gas applications and integrates with standard residential electrical configurations. When properly installed and maintained, the EC-462024 delivers dependable performance, reduced operating costs, and consistent water temperature control for residential pool and spa systems.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-69ed3017-cb7c-83e8-99f3-dedd59fc1a7d-48\" data-testid=\"conversation-turn-236\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"bf1673d7-2ad9-482e-952e-2a45830dedf8\" dir=\"auto\" data-message-model-slug=\"gpt-5-3\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"40\"\u003e────────────────────────────────────────\u003c\/p\u003e\n\u003ch2 data-section-id=\"w1c0q0\" data-start=\"42\" data-end=\"77\"\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003cp data-start=\"79\" data-end=\"315\"\u003e\u003cstrong data-start=\"79\" data-end=\"147\"\u003eQ: What is the Pentair EC-462024 MasterTemp 125 heater used for?\u003c\/strong\u003e\u003cbr data-start=\"147\" data-end=\"150\"\u003eA: The Pentair EC-462024 MasterTemp 125 is a 125,000 BTU natural gas pool and spa heater designed for smaller residential pools, spas, and above-ground applications.\u003c\/p\u003e\n\u003chr data-start=\"317\" data-end=\"320\"\u003e\n\u003cp data-start=\"322\" data-end=\"491\"\u003e\u003cstrong data-start=\"322\" data-end=\"377\"\u003eQ: Is the Pentair EC-462024 natural gas or propane?\u003c\/strong\u003e\u003cbr data-start=\"377\" data-end=\"380\"\u003eA: This model is designed for natural gas. Propane versions are available under different Pentair part numbers.\u003c\/p\u003e\n\u003chr data-start=\"493\" data-end=\"496\"\u003e\n\u003cp data-start=\"498\" data-end=\"688\"\u003e\u003cstrong data-start=\"498\" data-end=\"554\"\u003eQ: What size pool is the Pentair EC-462024 best for?\u003c\/strong\u003e\u003cbr data-start=\"554\" data-end=\"557\"\u003eA: This 125K BTU heater is best for pools up to approximately 15,000 gallons, as well as spas and smaller residential pool systems.\u003c\/p\u003e\n\u003chr data-start=\"690\" data-end=\"693\"\u003e\n\u003cp data-start=\"695\" data-end=\"910\"\u003e\u003cstrong data-start=\"695\" data-end=\"751\"\u003eQ: Is the Pentair EC-462024 MasterTemp 125 worth it?\u003c\/strong\u003e\u003cbr data-start=\"751\" data-end=\"754\"\u003eA: Yes. It is a strong option for homeowners who want compact natural gas heating, digital controls, energy efficiency, and reliable MasterTemp performance.\u003c\/p\u003e\n\u003chr data-start=\"912\" data-end=\"915\"\u003e\n\u003cp data-start=\"917\" data-end=\"1104\"\u003e\u003cstrong data-start=\"917\" data-end=\"972\"\u003eQ: Does the Pentair EC-462024 use a standing pilot?\u003c\/strong\u003e\u003cbr data-start=\"972\" data-end=\"975\"\u003eA: No. This heater uses hot surface ignition, eliminating the need for a standing pilot and improving efficiency and reliability.\u003c\/p\u003e\n\u003chr data-start=\"1106\" data-end=\"1109\"\u003e\n\u003cp data-start=\"1111\" data-end=\"1275\"\u003e\u003cstrong data-start=\"1111\" data-end=\"1166\"\u003eQ: What voltage does the Pentair EC-462024 require?\u003c\/strong\u003e\u003cbr data-start=\"1166\" data-end=\"1169\"\u003eA: This heater is compatible with 120V or 240V electrical service, depending on installation requirements.\u003c\/p\u003e\n\u003chr data-start=\"1277\" data-end=\"1280\"\u003e\n\u003cp data-start=\"1282\" data-end=\"1434\"\u003e\u003cstrong data-start=\"1282\" data-end=\"1332\"\u003eQ: Is the Pentair EC-462024 Low NOx compliant?\u003c\/strong\u003e\u003cbr data-start=\"1332\" data-end=\"1335\"\u003eA: Yes. This model is certified for low NOx emissions, making it suitable for many regulated areas.\u003c\/p\u003e\n\u003chr data-start=\"1436\" data-end=\"1439\"\u003e\n\u003cp data-start=\"1441\" data-end=\"1686\"\u003e\u003cstrong data-start=\"1441\" data-end=\"1506\"\u003eQ: Can the Pentair EC-462024 replace my existing pool heater?\u003c\/strong\u003e\u003cbr data-start=\"1506\" data-end=\"1509\"\u003eA: Yes. It can replace many smaller natural gas pool heaters, but compatibility depends on gas supply, plumbing layout, electrical setup, venting, and installation requirements.\u003c\/p\u003e\n\u003chr data-start=\"1688\" data-end=\"1691\"\u003e\n\u003cp data-start=\"1693\" data-end=\"1911\"\u003e\u003cstrong data-start=\"1693\" data-end=\"1761\"\u003eQ: Does the Pentair EC-462024 require professional installation?\u003c\/strong\u003e\u003cbr data-start=\"1761\" data-end=\"1764\"\u003eA: Yes. Professional installation is recommended due to natural gas connections, plumbing, electrical wiring, venting, and local code requirements.\u003c\/p\u003e\n\u003chr data-start=\"1913\" data-end=\"1916\"\u003e\n\u003cp data-start=\"1918\" data-end=\"2119\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1918\" data-end=\"1995\"\u003eQ: When should I choose the Pentair EC-462024 instead of a larger heater?\u003c\/strong\u003e\u003cbr data-start=\"1995\" data-end=\"1998\"\u003eA: Choose this 125K BTU model if you have a smaller pool or spa and want efficient heating without oversizing the system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv aria-hidden=\"true\" class=\"pointer-events-none -mt-px h-px translate-y-[calc(var(--scroll-root-safe-area-inset-bottom)-14*var(--spacing))]\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48988600140088,"sku":"EC-462024","price":1599.13,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/6319\/9544\/files\/PENEC462024_0.png?v=1777756248","url":"https:\/\/appaetechpoolsupply.com\/products\/pentair-mastertemp-125-high-performance-heater-125-000-btus-natural-gas-ec-462024","provider":"AppaeTech Pool Supply","version":"1.0","type":"link"}