{"product_id":"pentair-461112-eti-250-high-efficiency-heater","title":"Pentair | 461112 | ETi 250 High-Efficiency 250K BTU Natural Gas Pool Heater – Commercial Grade","description":"\u003cp data-end=\"615\" data-start=\"297\"\u003e\u003cstrong data-end=\"355\" data-start=\"297\"\u003eThe Pentair 461112 ETi 250 High-Efficiency Pool Heater\u003c\/strong\u003e is a 250,000 BTU natural gas heating solution engineered for commercial-grade performance and efficiency. With a 96% thermal efficiency rating, it delivers superior heating power while reducing operating costs, making it ideal for commercial pools and spas.\u003c\/p\u003e\n\u003chr data-end=\"620\" data-start=\"617\"\u003e\n\u003ch3 data-end=\"644\" data-start=\"622\"\u003e\u003cstrong data-end=\"642\" data-start=\"626\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-end=\"1180\" data-start=\"646\"\u003e\n\u003cli data-end=\"685\" data-start=\"646\"\u003e\n\u003cp data-end=\"685\" data-start=\"648\"\u003e250,000 BTU natural gas pool heater\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"742\" data-start=\"686\"\u003e\n\u003cp data-end=\"742\" data-start=\"688\"\u003eCommercial-grade design for high-demand environments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"806\" data-start=\"743\"\u003e\n\u003cp data-end=\"806\" data-start=\"745\"\u003e96% thermal efficiency – one of the highest in the industry\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"867\" data-start=\"807\"\u003e\n\u003cp data-end=\"867\" data-start=\"809\"\u003eTitanium heat exchanger for maximum corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"918\" data-start=\"868\"\u003e\n\u003cp data-end=\"918\" data-start=\"870\"\u003eCertified for indoor and outdoor installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"968\" data-start=\"919\"\u003e\n\u003cp data-end=\"968\" data-start=\"921\"\u003eUltra-quiet operation for minimal disturbance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1024\" data-start=\"969\"\u003e\n\u003cp data-end=\"1024\" data-start=\"971\"\u003eDigital controls for precise temperature management\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1083\" data-start=\"1025\"\u003e\n\u003cp data-end=\"1083\" data-start=\"1027\"\u003eLow NOx emissions – meets strict air quality standards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1142\" data-start=\"1084\"\u003e\n\u003cp data-end=\"1142\" data-start=\"1086\"\u003eBuilt for long service life with heavy-duty components\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1180\" data-start=\"1143\"\u003e\n\u003cp data-end=\"1180\" data-start=\"1145\"\u003eASME certified for commercial use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"1185\" data-start=\"1182\"\u003e\n\u003ch3 data-end=\"1213\" data-start=\"1187\"\u003e\u003cstrong data-end=\"1211\" data-start=\"1191\"\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"1527\" data-start=\"1214\"\u003eThe Pentair 461112 ETi 250 High-Efficiency Pool Heater is designed to meet the rigorous demands of commercial aquatic facilities while delivering exceptional energy efficiency. With an industry-leading 96% thermal efficiency rating, it provides powerful and consistent heating while helping to lower fuel costs.\u003c\/p\u003e\n\u003cp data-end=\"1988\" data-start=\"1529\"\u003eA titanium heat exchanger offers unmatched resistance to corrosion, even in harsh pool water conditions, ensuring long-term reliability. The ETi 250 is ASME certified and suitable for both indoor and outdoor installations, giving commercial operators flexible placement options. Its ultra-quiet operation, advanced digital controls, and low NOx emissions make it a safe, efficient, and environmentally responsible choice for commercial pool and spa heating.\u003c\/p\u003e\n\u003cp data-end=\"2200\" data-start=\"1990\"\u003eBuilt with heavy-duty, commercial-grade components, the Pentair 461112 ETi 250 is engineered for durability, performance, and operational savings—making it one of the most advanced pool heaters on the market.\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-36\" data-testid=\"conversation-turn-212\" 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=\"3566c2d7-aabd-4b39-b0cc-f230b9b76b0c\" 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=\"296\"\u003e\u003cstrong data-start=\"79\" data-end=\"142\"\u003eQ: What is the Pentair 461112 ETi 250 pool heater used for?\u003c\/strong\u003e\u003cbr data-start=\"142\" data-end=\"145\"\u003eA: The Pentair 461112 ETi 250 is a 250,000 BTU natural gas pool and spa heater designed for commercial-grade and high-demand pool heating applications.\u003c\/p\u003e\n\u003chr data-start=\"298\" data-end=\"301\"\u003e\n\u003cp data-start=\"303\" data-end=\"475\"\u003e\u003cstrong data-start=\"303\" data-end=\"347\"\u003eQ: Is the Pentair 461112 ASME certified?\u003c\/strong\u003e\u003cbr data-start=\"347\" data-end=\"350\"\u003eA: Yes. This ETi 250 model is ASME certified, making it suitable for commercial and code-required pool heating installations.\u003c\/p\u003e\n\u003chr data-start=\"477\" data-end=\"480\"\u003e\n\u003cp data-start=\"482\" data-end=\"651\"\u003e\u003cstrong data-start=\"482\" data-end=\"534\"\u003eQ: Is the Pentair 461112 natural gas or propane?\u003c\/strong\u003e\u003cbr data-start=\"534\" data-end=\"537\"\u003eA: This model is designed for natural gas. Propane versions may be available under different Pentair part numbers.\u003c\/p\u003e\n\u003chr data-start=\"653\" data-end=\"656\"\u003e\n\u003cp data-start=\"658\" data-end=\"851\"\u003e\u003cstrong data-start=\"658\" data-end=\"711\"\u003eQ: What size pool is the Pentair 461112 best for?\u003c\/strong\u003e\u003cbr data-start=\"711\" data-end=\"714\"\u003eA: This 250K BTU heater is best for medium-sized pools, spas, commercial pools, and high-demand applications that need efficient heating.\u003c\/p\u003e\n\u003chr data-start=\"853\" data-end=\"856\"\u003e\n\u003cp data-start=\"858\" data-end=\"1060\"\u003e\u003cstrong data-start=\"858\" data-end=\"904\"\u003eQ: Is the Pentair 461112 ETi 250 worth it?\u003c\/strong\u003e\u003cbr data-start=\"904\" data-end=\"907\"\u003eA: Yes. It is a premium heater offering 96% thermal efficiency, ASME certification, titanium heat exchanger durability, and commercial-grade performance.\u003c\/p\u003e\n\u003chr data-start=\"1062\" data-end=\"1065\"\u003e\n\u003cp data-start=\"1067\" data-end=\"1301\"\u003e\u003cstrong data-start=\"1067\" data-end=\"1125\"\u003eQ: What is the benefit of the titanium heat exchanger?\u003c\/strong\u003e\u003cbr data-start=\"1125\" data-end=\"1128\"\u003eA: The titanium heat exchanger provides excellent corrosion resistance, making it ideal for saltwater pools, chemically treated water, and demanding commercial environments.\u003c\/p\u003e\n\u003chr data-start=\"1303\" data-end=\"1306\"\u003e\n\u003cp data-start=\"1308\" data-end=\"1469\"\u003e\u003cstrong data-start=\"1308\" data-end=\"1355\"\u003eQ: Is the Pentair 461112 Low NOx compliant?\u003c\/strong\u003e\u003cbr data-start=\"1355\" data-end=\"1358\"\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=\"1471\" data-end=\"1474\"\u003e\n\u003cp data-start=\"1476\" data-end=\"1699\"\u003e\u003cstrong data-start=\"1476\" data-end=\"1541\"\u003eQ: Does the Pentair 461112 require professional installation?\u003c\/strong\u003e\u003cbr data-start=\"1541\" data-end=\"1544\"\u003eA: Yes. Professional installation is required due to natural gas sizing, plumbing, electrical setup, venting, ASME requirements, and local code compliance.\u003c\/p\u003e\n\u003chr data-start=\"1701\" data-end=\"1704\"\u003e\n\u003cp data-start=\"1706\" data-end=\"1912\"\u003e\u003cstrong data-start=\"1706\" data-end=\"1769\"\u003eQ: Can the Pentair 461112 be installed indoors or outdoors?\u003c\/strong\u003e\u003cbr data-start=\"1769\" data-end=\"1772\"\u003eA: Yes. This heater is certified for indoor and outdoor installations when installed according to Pentair requirements and applicable codes.\u003c\/p\u003e\n\u003chr data-start=\"1914\" data-end=\"1917\"\u003e\n\u003cp data-start=\"1919\" data-end=\"2167\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1919\" data-end=\"1991\"\u003eQ: Why choose the Pentair ETi 250 instead of a standard pool heater?\u003c\/strong\u003e\u003cbr data-start=\"1991\" data-end=\"1994\"\u003eA: Choose the ETi 250 if you want higher efficiency, lower operating costs, titanium corrosion resistance, and commercial-grade durability compared to standard pool 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":49181647667512,"sku":"461112","price":7843.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/6319\/9544\/files\/461112.png?v=1777922241","url":"https:\/\/appaetechpoolsupply.com\/products\/pentair-461112-eti-250-high-efficiency-heater","provider":"AppaeTech Pool Supply","version":"1.0","type":"link"}