{"product_id":"pentair-460776-mastertemp-400k-btu-natural-gas-pool-heater","title":"Pentair | 460776 | MasterTemp 400K BTU ASME Propane Gas Pool Heater – Energy-Efficient, High-Performance","description":"\u003cp data-start=\"335\" data-end=\"728\"\u003e\u003cstrong data-start=\"335\" data-end=\"406\"\u003eThe Pentair 460776 MasterTemp 400K BTU ASME Propane Gas Pool Heater\u003c\/strong\u003e is a commercial-grade, high-performance heating solution designed for pools and spas that demand powerful, efficient, and reliable heating. ASME certification ensures compliance with commercial safety and performance standards, making it an excellent choice for both commercial and high-demand residential applications.\u003c\/p\u003e\n\u003chr data-start=\"730\" data-end=\"733\"\u003e\n\u003ch3 data-start=\"735\" data-end=\"757\"\u003e\u003cstrong data-start=\"739\" data-end=\"755\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"759\" data-end=\"1435\"\u003e\n\u003cli data-start=\"759\" data-end=\"848\"\u003e\n\u003cp data-start=\"761\" data-end=\"848\"\u003e\u003cstrong data-start=\"761\" data-end=\"793\"\u003e400,000 BTU Heating Capacity\u003c\/strong\u003e – Delivers powerful heating for large pools and spas\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"849\" data-end=\"932\"\u003e\n\u003cp data-start=\"851\" data-end=\"932\"\u003e\u003cstrong data-start=\"851\" data-end=\"869\"\u003eASME Certified\u003c\/strong\u003e – Meets rigorous commercial safety and performance standards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"933\" data-end=\"1015\"\u003e\n\u003cp data-start=\"935\" data-end=\"1015\"\u003e\u003cstrong data-start=\"935\" data-end=\"960\"\u003ePropane Gas Operation\u003c\/strong\u003e – Suitable for locations without natural gas service\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1016\" data-end=\"1094\"\u003e\n\u003cp data-start=\"1018\" data-end=\"1094\"\u003e\u003cstrong data-start=\"1018\" data-end=\"1045\"\u003eEnergy-Efficient Design\u003c\/strong\u003e – Reduces fuel consumption and operating costs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1095\" data-end=\"1162\"\u003e\n\u003cp data-start=\"1097\" data-end=\"1162\"\u003e\u003cstrong data-start=\"1097\" data-end=\"1114\"\u003eRapid Heat-Up\u003c\/strong\u003e – Brings water to desired temperature quickly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1163\" data-end=\"1234\"\u003e\n\u003cp data-start=\"1165\" data-end=\"1234\"\u003e\u003cstrong data-start=\"1165\" data-end=\"1199\"\u003eCorrosion-Resistant Components\u003c\/strong\u003e – Built for long-term durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1235\" data-end=\"1309\"\u003e\n\u003cp data-start=\"1237\" data-end=\"1309\"\u003e\u003cstrong data-start=\"1237\" data-end=\"1257\"\u003eDigital Controls\u003c\/strong\u003e – Precise temperature settings and easy operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1310\" data-end=\"1376\"\u003e\n\u003cp data-start=\"1312\" data-end=\"1376\"\u003e\u003cstrong data-start=\"1312\" data-end=\"1333\"\u003eLow NOx Emissions\u003c\/strong\u003e – Meets strict environmental regulations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1377\" data-end=\"1435\"\u003e\n\u003cp data-start=\"1379\" data-end=\"1435\"\u003e\u003cstrong data-start=\"1379\" data-end=\"1398\"\u003eQuiet Operation\u003c\/strong\u003e – Runs smoothly with minimal noise\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1437\" data-end=\"1440\"\u003e\n\u003ch3 data-start=\"1442\" data-end=\"1468\"\u003e\u003cstrong data-start=\"1446\" data-end=\"1466\"\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1469\" data-end=\"1886\"\u003eThe Pentair 460776 MasterTemp 400K BTU ASME Propane Gas Pool Heater is engineered for heavy-duty heating needs in commercial pools, spas, and large residential installations. With ASME certification, it meets the highest safety and performance requirements for commercial use. Its high-efficiency design maximizes heat output while minimizing fuel usage, ensuring both rapid heat-up times and lower operating costs.\u003c\/p\u003e\n\u003cp data-start=\"1888\" data-end=\"2205\"\u003eThe corrosion-resistant construction ensures reliability even in demanding pool environments, while intuitive digital controls make it simple to set and maintain your preferred temperature. Low NOx emissions comply with strict air quality standards, making this heater both powerful and environmentally responsible.\u003c\/p\u003e\n\u003cp data-start=\"2207\" data-end=\"2388\"\u003eFor operators seeking commercial-grade performance, energy efficiency, and long-term durability, the Pentair MasterTemp 400K BTU ASME Propane model is a top-tier heating solution.\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-29\" data-testid=\"conversation-turn-198\" 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=\"0fade3d0-c188-4db4-af30-7750b2797c6e\" dir=\"auto\" data-message-model-slug=\"gpt-5-5-thinking\" 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=\"301\"\u003e\u003cstrong data-start=\"79\" data-end=\"145\"\u003eQ: What is the Pentair 460776 MasterTemp ASME heater used for?\u003c\/strong\u003e\u003cbr data-start=\"145\" data-end=\"148\"\u003eA: The Pentair 460776 is a 400,000 BTU propane pool and spa heater designed for large residential, commercial, and high-demand pool heating applications.\u003c\/p\u003e\n\u003chr data-start=\"303\" data-end=\"306\"\u003e\n\u003cp data-start=\"308\" data-end=\"478\"\u003e\u003cstrong data-start=\"308\" data-end=\"352\"\u003eQ: Is the Pentair 460776 ASME certified?\u003c\/strong\u003e\u003cbr data-start=\"352\" data-end=\"355\"\u003eA: Yes. This model is ASME certified, making it suitable for commercial-grade and code-required pool heating installations.\u003c\/p\u003e\n\u003chr data-start=\"480\" data-end=\"483\"\u003e\n\u003cp data-start=\"485\" data-end=\"655\"\u003e\u003cstrong data-start=\"485\" data-end=\"537\"\u003eQ: Is the Pentair 460776 propane or natural gas?\u003c\/strong\u003e\u003cbr data-start=\"537\" data-end=\"540\"\u003eA: This model is designed for propane gas. Natural gas versions are available under different Pentair part numbers.\u003c\/p\u003e\n\u003chr data-start=\"657\" data-end=\"660\"\u003e\n\u003cp data-start=\"662\" data-end=\"857\"\u003e\u003cstrong data-start=\"662\" data-end=\"715\"\u003eQ: What size pool is the Pentair 460776 best for?\u003c\/strong\u003e\u003cbr data-start=\"715\" data-end=\"718\"\u003eA: This 400K BTU heater is best for large pools, spas, and pool\/spa combinations that need fast heat-up and consistent temperature control.\u003c\/p\u003e\n\u003chr data-start=\"859\" data-end=\"862\"\u003e\n\u003cp data-start=\"864\" data-end=\"1074\"\u003e\u003cstrong data-start=\"864\" data-end=\"913\"\u003eQ: Is the Pentair 460776 MasterTemp worth it?\u003c\/strong\u003e\u003cbr data-start=\"913\" data-end=\"916\"\u003eA: Yes. It is a premium option for customers who need ASME-certified propane heating, high BTU output, digital controls, and dependable long-term performance.\u003c\/p\u003e\n\u003chr data-start=\"1076\" data-end=\"1079\"\u003e\n\u003cp data-start=\"1081\" data-end=\"1242\"\u003e\u003cstrong data-start=\"1081\" data-end=\"1128\"\u003eQ: Is the Pentair 460776 Low NOx compliant?\u003c\/strong\u003e\u003cbr data-start=\"1128\" data-end=\"1131\"\u003eA: Yes. This heater is designed with Low NOx emissions to meet strict air quality standards in regulated areas.\u003c\/p\u003e\n\u003chr data-start=\"1244\" data-end=\"1247\"\u003e\n\u003cp data-start=\"1249\" data-end=\"1476\"\u003e\u003cstrong data-start=\"1249\" data-end=\"1314\"\u003eQ: Does the Pentair 460776 require professional installation?\u003c\/strong\u003e\u003cbr data-start=\"1314\" data-end=\"1317\"\u003eA: Yes. Professional installation is recommended due to propane gas sizing, electrical wiring, plumbing, venting, ASME requirements, and local code compliance.\u003c\/p\u003e\n\u003chr data-start=\"1478\" data-end=\"1481\"\u003e\n\u003cp data-start=\"1483\" data-end=\"1714\"\u003e\u003cstrong data-start=\"1483\" data-end=\"1545\"\u003eQ: Can the Pentair 460776 replace my existing pool heater?\u003c\/strong\u003e\u003cbr data-start=\"1545\" data-end=\"1548\"\u003eA: Yes. It can replace many existing propane pool heaters, but compatibility depends on gas supply, plumbing layout, electrical setup, venting, and code requirements.\u003c\/p\u003e\n\u003chr data-start=\"1716\" data-end=\"1719\"\u003e\n\u003cp data-start=\"1721\" data-end=\"1931\"\u003e\u003cstrong data-start=\"1721\" data-end=\"1788\"\u003eQ: Can the Pentair 460776 be used with pool automation systems?\u003c\/strong\u003e\u003cbr data-start=\"1788\" data-end=\"1791\"\u003eA: Yes. The digital control system can integrate with many compatible pool automation systems for temperature control and system monitoring.\u003c\/p\u003e\n\u003chr data-start=\"1933\" data-end=\"1936\"\u003e\n\u003cp data-start=\"1938\" data-end=\"2153\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1938\" data-end=\"2013\"\u003eQ: When should I choose the Pentair 460776 instead of a smaller heater?\u003c\/strong\u003e\u003cbr data-start=\"2013\" data-end=\"2016\"\u003eA: Choose this 400K BTU model if you have a large pool, commercial facility, attached spa, or need faster heat-up than lower BTU heaters.\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":44123084521515,"sku":"460776","price":5050.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/1589\/7131\/files\/460776.png?v=1779704049","url":"https:\/\/auremontdirect.com\/products\/pentair-460776-mastertemp-400k-btu-natural-gas-pool-heater","provider":"Auremont Direct","version":"1.0","type":"link"}