{"product_id":"mrcool-diy®-5th-gen-35-ft-1-4-x-3-8-pre-charged-quick-connect-line-set-for-6k-indoor-units","title":"MRCOOL DIY 5th Gen 35 ft. 1\/4\" x 3\/8\" Pre-Charged Quick Connect Line Set with -  DIY Pro Cable - R454B (for 6K, 9K \u0026 12K Indoor Units)","description":"\u003ch2\u003eMRCOOL DIY 5th Gen 35 ft. 1\/4\" x 3\/8\" Pre-Charged Quick Connect Line Set with -  DIY Pro Cable - R454B (for 6K, 9K \u0026amp; 12K Indoor Units)\u003c\/h2\u003e\n\u003cp\u003eThe MRCOOL DIY 35 ft 1\/4 x 3\/8 Line Set (Model: DIY35-1438C-O) is designed to work seamlessly with DIY 6K, 9K, and 12K indoor units. Pre-charged with R-454B refrigerant, this line set ensures efficient performance, quick installation, and long-lasting reliability. Featuring patented Quick-Connection fittings, it allows homeowners to set up their own system without the need for specialized HVAC tools, making it a perfect accessory for the MRCOOL DIY Mini-Split systems.\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePre-Charged Convenience:\u003c\/b\u003e Factory pre-charged with eco-friendly R-454B refrigerant for immediate use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eQuick-Connection Fittings:\u003c\/b\u003e Designed for hassle-free installation without vacuuming or special tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCompatible Units:\u003c\/b\u003e Works with MRCOOL® DIY® 6K, 9K, and 12K indoor air handlers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDurable Construction:\u003c\/b\u003e Built with strong materials in a white finish and copper interior for reliable operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOptimal Size:\u003c\/b\u003e 35 ft line set with a 1\/4 in. liquid line and 3\/8 in. suction line.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul data-start=\"30\" data-end=\"1114\"\u003e\n\u003cli data-start=\"30\" data-end=\"220\"\u003e\n\u003cp data-start=\"32\" data-end=\"220\"\u003e\u003cstrong data-start=\"32\" data-end=\"67\"\u003eEasy, DIY‑Friendly Installation\u003c\/strong\u003e – Pre‑charged and quick‑connect design eliminates the need to vacuum or handle refrigerant manually, making setup much simpler for experienced DIYers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"221\" data-end=\"402\"\u003e\n\u003cp data-start=\"223\" data-end=\"402\"\u003e\u003cstrong data-start=\"223\" data-end=\"256\"\u003eCompatible with Popular Sizes\u003c\/strong\u003e – Sized for \u003cstrong data-start=\"269\" data-end=\"316\"\u003e6K, 9K, and 12K indoor MRCOOL 5th Gen units\u003c\/strong\u003e, ensuring reliable performance across common residential mini‑split configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"403\" data-end=\"578\"\u003e\n\u003cp data-start=\"405\" data-end=\"578\"\u003e\u003cstrong data-start=\"405\" data-end=\"432\"\u003ePre‑Charged R454B Ready\u003c\/strong\u003e – Factory‑charged with \u003cstrong data-start=\"456\" data-end=\"477\"\u003eR454B refrigerant\u003c\/strong\u003e, so the line set arrives ready to install and helps maintain proper system balance and efficiency.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"579\" data-end=\"753\"\u003e\n\u003cp data-start=\"581\" data-end=\"753\"\u003e\u003cstrong data-start=\"581\" data-end=\"605\"\u003eDurable Construction\u003c\/strong\u003e – Built with quality insulation and corrosion‑resistant materials to withstand outdoor conditions and protect against performance loss over time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"754\" data-end=\"952\"\u003e\n\u003cp data-start=\"756\" data-end=\"952\"\u003e\u003cstrong data-start=\"756\" data-end=\"785\"\u003eReliable Refrigerant Flow\u003c\/strong\u003e – Correct 1\/4″ (liquid) and 3\/8″ (suction) lines ensure efficient refrigerant transport between indoor and outdoor units, supporting optimal cooling\/heating cycles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"953\" data-end=\"1114\"\u003e\n\u003cp data-start=\"955\" data-end=\"1114\"\u003e\u003cstrong data-start=\"955\" data-end=\"984\"\u003eReduces Installation Time\u003c\/strong\u003e – Quick‑connect fittings and pre‑charge help cut down on labor and tools required, saving time and minimizing setup complexity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"186\" data-end=\"414\"\u003e\u003cstrong data-start=\"186\" data-end=\"234\"\u003eQ: What is this MRCOOL DIY 5th Gen line set?\u003c\/strong\u003e\u003cbr data-start=\"234\" data-end=\"237\"\u003eA: A 35 ft pre‑charged quick‑connect refrigerant line set with communication cable designed for easy installation with MRCOOL 5th Gen mini split indoor units (6K, 9K \u0026amp; 12K BTU).\u003c\/p\u003e\n\u003cp data-start=\"416\" data-end=\"556\"\u003e\u003cstrong data-start=\"416\" data-end=\"459\"\u003eQ: What size are the refrigerant lines?\u003c\/strong\u003e\u003cbr data-start=\"459\" data-end=\"462\"\u003eA: 1\/4″ (liquid) and 3\/8″ (suction) diameter lines — standard for smaller MRCOOL indoor units.\u003c\/p\u003e\n\u003cp data-start=\"558\" data-end=\"715\"\u003e\u003cstrong data-start=\"558\" data-end=\"594\"\u003eQ: What does “pre‑charged” mean?\u003c\/strong\u003e\u003cbr data-start=\"594\" data-end=\"597\"\u003eA: The lines come factory‑charged with R454B refrigerant, so you avoid complex field charging and can connect quickly.\u003c\/p\u003e\n\u003cp data-start=\"717\" data-end=\"845\"\u003e\u003cstrong data-start=\"717\" data-end=\"750\"\u003eQ: What is the DIY Pro Cable?\u003c\/strong\u003e\u003cbr data-start=\"750\" data-end=\"753\"\u003eA: A communication\/ power cable included to link the indoor unit with the outdoor condenser.\u003c\/p\u003e\n\u003cp data-start=\"847\" data-end=\"987\"\u003e\u003cstrong data-start=\"847\" data-end=\"874\"\u003eQ: Who is it ideal for?\u003c\/strong\u003e\u003cbr data-start=\"874\" data-end=\"877\"\u003eA: Homeowners, installers, and DIYers setting up a 5th Gen MRCOOL mini split with 6K, 9K, or 12K indoor units.\u003c\/p\u003e\n\u003cp data-start=\"989\" data-end=\"1145\"\u003e\u003cstrong data-start=\"989\" data-end=\"1027\"\u003eQ: Why choose a quick‑connect set?\u003c\/strong\u003e\u003cbr data-start=\"1027\" data-end=\"1030\"\u003eA: It simplifies installation, saves time, and reduces the need for specialized HVAC tools or refrigerant handling.\u003c\/p\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-start=\"94\" data-end=\"198\"\u003e\n\u003cp data-start=\"96\" data-end=\"198\"\u003e\u003cstrong data-start=\"96\" data-end=\"120\"\u003eInspect connections:\u003c\/strong\u003e Periodically check quick‑connect fittings for secure, leak‑free attachment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"199\" data-end=\"307\"\u003e\n\u003cp data-start=\"201\" data-end=\"307\"\u003e\u003cstrong data-start=\"201\" data-end=\"224\"\u003eProtect insulation:\u003c\/strong\u003e Ensure line set insulation remains intact; replace any cracked or worn sections.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"308\" data-end=\"390\"\u003e\n\u003cp data-start=\"310\" data-end=\"390\"\u003e\u003cstrong data-start=\"310\" data-end=\"325\"\u003eKeep clean:\u003c\/strong\u003e Remove dirt and debris from line set surfaces to prevent wear.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"391\" data-end=\"495\"\u003e\n\u003cp data-start=\"393\" data-end=\"495\"\u003e\u003cstrong data-start=\"393\" data-end=\"415\"\u003eAvoid sharp bends:\u003c\/strong\u003e Route the line set without kinks or tight bends to maintain refrigerant flow.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"496\" data-end=\"588\"\u003e\n\u003cp data-start=\"498\" data-end=\"588\"\u003e\u003cstrong data-start=\"498\" data-end=\"519\"\u003eSupport properly:\u003c\/strong\u003e Use clips or brackets to prevent sagging or strain on connections.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"589\" data-end=\"693\"\u003e\n\u003cp data-start=\"591\" data-end=\"693\"\u003e\u003cstrong data-start=\"591\" data-end=\"611\"\u003eCheck for leaks:\u003c\/strong\u003e Regularly inspect for signs of refrigerant leakage and address promptly if found.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MRCOOL","offers":[{"title":"Default Title","offer_id":54162234376476,"sku":"DIY35-1438C-O","price":502.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/0622\/4924\/files\/MRCOOL-4thGenDIYMiniSplit-LineSet-PremiumHomeSource_bf379a13-ca40-4b53-9bcf-403471c7987c.webp?v=1780126107","url":"https:\/\/www.mybackyardzone.com\/products\/mrcool-diy%c2%ae-5th-gen-35-ft-1-4-x-3-8-pre-charged-quick-connect-line-set-for-6k-indoor-units","provider":"Backup Power Made Simple","version":"1.0","type":"link"}