{"product_id":"mrcool-5th-gen-25ft-1-4-x-1-2-lineset-for-diy-18k-indoor-r454b-diy25-1412-o","title":"MRCOOL 5th Gen 25ft 1\/4 x 1\/2 Lineset for DIY 18K Indoor - R454B, DIY25-1412-O","description":"\u003cstyle\u003e\n    .iron-theme{\n      --black:#0b0b0b; --gray:#6b7280;\n      --red:#c1121f; --red2:#e11d2e;\n      --border:#e5e7eb; --soft:#f8fafc;\n      font-family: Arial, Helvetica, sans-serif;\n      color: var(--black);\n      max-width: 1100px;\n      margin: 0 auto;\n      line-height: 1.7;\n    }\n    .shell{border:1px solid var(--border);border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 10px 28px rgba(0,0,0,.08);}\n    .top{padding:24px;}\n    .kicker{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--gray);margin:0 0 8px;}\n    h1{margin:0;font-size:30px;font-weight:900;text-transform:uppercase;}\n    .sub{margin:12px 0 0;font-size:15px;max-width:100ch;}\n    .stripe{height:8px;background:linear-gradient(90deg,var(--red) 0%,var(--red) 70%,var(--red2) 100%);}\n    .content{padding:24px;background:var(--soft);}\n    .card{border:1px solid var(--border);border-radius:16px;background:#fff;padding:20px;margin:18px 0;box-shadow:0 8px 22px rgba(0,0,0,.06);}\n    h2{margin:0 0 12px;font-size:19px;font-weight:900;text-transform:uppercase;display:flex;align-items:center;gap:10px;}\n    h2:before{content:\"\";width:10px;height:10px;background:var(--red);border-radius:2px;}\n    ul{margin:0;padding-left:20px;}\n    ul li{margin:8px 0;}\n    table{width:100%;border-collapse:collapse;font-size:14px;}\n    th, td{border:1px solid var(--border);padding:10px;text-align:left;}\n    th{background:#f3f4f6;font-size:12px;text-transform:uppercase;font-weight:900;}\n    .callout{border:1px dashed rgba(193,18,31,.5);background:rgba(193,18,31,.06);border-radius:12px;padding:14px;font-size:14px;margin-top:12px;}\n  \u003c\/style\u003e\n\n\u003csection aria-label=\"MRCOOL 5th Gen DIY 25ft 1\/4 x 1\/2 Lineset for DIY 18K Indoor Product Description\" class=\"cy3c-wrap iron-theme\"\u003e\n  \u003cdiv class=\"shell\"\u003e\n    \n    \u003cdiv class=\"top\"\u003e\n      \u003cp class=\"kicker\"\u003ePre-Charged R454B • 100% DIY Installation • 25-Foot Reach\u003c\/p\u003e\n      \u003ch2\u003eMRCOOL 5th Gen DIY 25ft 1\/4\" x 1\/2\" Lineset for DIY 18K Indoor Units DIY25-1412-O\u003c\/h2\u003e\n      \u003cp class=\"sub\"\u003eEstablish a high-performance connection for your 18,000 BTU system with the \u003cstrong\u003eMRCOOL 5th Gen 25ft Pre-Charged Lineset (DIY25-1412-O)\u003c\/strong\u003e. Precision-engineered for 5th Generation DIY mini-split air handlers, this 25-foot lineset offers the ideal length for standard residential configurations where the condenser is situated at a moderate distance from the indoor unit. Factory-sealed and pre-charged with the next-generation R454B refrigerant, this unit completely removes the need for professional vacuum pumps or refrigerant charging, ensuring a streamlined, cost-effective installation process that maintains industrial-grade reliability.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv class=\"stripe\"\u003e\u003cbr\u003e\u003c\/div\u003e\n    \n    \u003cdiv class=\"content\"\u003e\n      \n      \u003cdiv class=\"card\"\u003e\n        \u003ch2\u003eMRCOOL 5th Gen DIY 25ft 1\/4\" x 1\/2\" Lineset Applications\u003c\/h2\u003e\n        \u003cul\u003e\n          \u003cli\u003eStandard residential runs connecting an 18,000 BTU indoor air handler to an outdoor condenser.\u003c\/li\u003e\n          \u003cli\u003eInstallations requiring a 25-foot span through wall cavities or across exterior siding.\u003c\/li\u003e\n          \u003cli\u003eSystem designs requiring a tool-free connection for 5th Generation DIY hardware.\u003c\/li\u003e\n          \u003cli\u003eCompliance-driven upgrades utilizing the latest R454B low-GWP refrigerant standards.\u003c\/li\u003e\n        \u003c\/ul\u003e\n        \u003cdiv class=\"callout\"\u003eEngineered to provide the exact 1\/4\" liquid and 1\/2\" suction diameters required for optimal refrigerant flow and pressure management in 18K BTU systems.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \n      \u003cdiv class=\"card\"\u003e\n        \u003ch2\u003eMRCOOL 5th Gen DIY 25ft 1\/4\" x 1\/2\" Lineset Specifications\u003c\/h2\u003e\n        \u003ctable\u003e\n          \u003ctbody\u003e\n            \u003ctr\u003e\n              \u003cth\u003eSKU\u003c\/th\u003e\n              \u003ctd\u003eDIY25-1412-O\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eLength\u003c\/th\u003e\n              \u003ctd\u003e25 Feet\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eLiquid Line Size\u003c\/th\u003e\n              \u003ctd\u003e1\/4 Inch\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eSuction Line Size\u003c\/th\u003e\n              \u003ctd\u003e1\/2 Inch\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eCompatibility\u003c\/th\u003e\n              \u003ctd\u003e5th Gen DIY 18K BTU Indoor Handlers\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eRefrigerant Type\u003c\/th\u003e\n              \u003ctd\u003ePre-Charged with R454B\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eConnection Type\u003c\/th\u003e\n              \u003ctd\u003ePatented Quick Connect Fittings\u003c\/td\u003e\n            \u003c\/tr\u003e\n          \u003c\/tbody\u003e\n        \u003c\/table\u003e\n      \u003c\/div\u003e\n      \n      \u003cdiv class=\"card\"\u003e\n        \u003ch2\u003eWhy Choose the MRCOOL 5th Gen 25ft DIY Lineset\u003c\/h2\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003cstrong\u003eTrue DIY Simplicity:\u003c\/strong\u003e Patented Quick Connect fittings allow for a leak-proof, airtight seal without specialized HVAC tools or flaring kits.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eEco-Friendly Technology:\u003c\/strong\u003e Arrives pre-charged with R454B, ensuring your setup meets the newest environmental and efficiency regulations.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eRobust Construction:\u003c\/strong\u003e High-density weather-resistant insulation prevents condensation and minimizes energy loss across the 25-foot span.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eProfessional Results:\u003c\/strong\u003e Enables homeowners to execute a professional-grade installation while bypassing expensive contractor fees for vacuuming and charging.\u003c\/li\u003e\n        \u003c\/ul\u003e\n        \u003cdiv class=\"callout\"\u003eThe MRCOOL 5th Gen 25ft DIY Lineset (DIY25-1412-O) provides the precise fit and engineering needed to ensure your 18K BTU system operates at peak efficiency from day one.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e","brand":"MRCOOL","offers":[{"title":"Default Title","offer_id":53230672544109,"sku":"DIY25-1412-O","price":272.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6996\/6445\/files\/mc-nov-qc-lset-3D-img-1000px-01_21eab8be-b7df-4a80-b007-d400c7f8270f.webp?v=1776891651","url":"https:\/\/ironlinetools.com\/products\/mrcool-5th-gen-25ft-1-4-x-1-2-lineset-for-diy-18k-indoor-r454b-diy25-1412-o","provider":"Iron Line Tools","version":"1.0","type":"link"}