{"product_id":"line-set-coupler-kit-for-all-diy-pre-charged-systems-r-410a-r-454b","title":"Line Set Coupler Kit – For All DIY Pre-Charged Systems (R-410A \u0026 R-454B)","description":"\u003ch2 style=\"font-size: 28px; color: #004d99;\"\u003eMRCOOL DIY Coupler Kits – Seamlessly Extend Your Pre-Charged Line Sets\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px;\"\u003eExtend your MRCOOL mini split or central ducted HVAC system effortlessly with our \u003cstrong\u003eMRCOOL DIY Coupler Kits\u003c\/strong\u003e. Designed to connect two pre-charged line sets together, these couplers feature MRCOOL’s patented quick connect fittings that allow refrigerant to remain sealed and stable—no vacuum pump, gauges, or certified HVAC technician required. Whether you’re working with a standard DIY mini split system or one of our advanced ducted heat pump setups, we offer the exact coupler configuration you need to get the job done right.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 22px; color: #0066cc;\"\u003e✅ Key Benefits of MRCOOL DIY Coupler Kits\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; padding-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue DIY Installation:\u003c\/strong\u003e Eliminate the need for refrigerant charging or HVAC service calls—just hand tighten and go.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with R-410A \u0026amp; R-454B:\u003c\/strong\u003e Works with both older and new-generation MRCOOL systems, including the 5th Gen DIY Series using R-454B refrigerant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Special Tools Required:\u003c\/strong\u003e Each coupler is pre-charged, sealed, and uses quick-connect threading—no flaring, no soldering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeak-Free Design:\u003c\/strong\u003e MRCOOL’s patented sealing technology ensures a secure, leak-free connection every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade for MRCOOL Systems:\u003c\/strong\u003e Engineered specifically for MRCOOL DIY Mini Splits, Central Ducted, Universal Series, Hyper Heat, and VersaPro™ models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size: 22px; color: #0066cc;\"\u003e🧰 Available Coupler Configurations\u003c\/h2\u003e\n\u003ch3 style=\"font-size: 18px; margin-top: 20px;\"\u003e🔹 \u003cstrong\u003e1\/2\" x 1\/4\" MRCOOL DIY Couplers – Without Communication Wire\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp style=\"font-size: 16px;\"\u003eDesigned for 6K, 9K, 12K, and 18K BTU MRCOOL DIY Mini Split systems using 1\/2\" suction and 1\/4\" liquid line sizes. Perfect for combining two line sets to reach longer distances when mounting air handlers further from the condenser.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 18px; margin-top: 20px;\"\u003e🔹 \u003cstrong\u003e3\/8\" x 5\/8\" MRCOOL DIY Couplers – Without Communication Wire\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp style=\"font-size: 16px;\"\u003eThis coupler set is designed exclusively for MRCOOL 24K and 36K BTU DIY Mini Splits, supporting 3\/8\" liquid and 5\/8\" suction lines. Ideal for longer line set runs. \u003cstrong\u003eWe are the only authorized MRCOOL dealer offering this bundle without the control wire\u003c\/strong\u003e, giving you more flexibility in your install.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 18px; margin-top: 20px;\"\u003e🔹 \u003cstrong\u003e3\/8\" x 3\/4\" Couplers – Universal, HyperHeat, and VersaPro™ Systems - 1st Gen or 2nd Gen\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp style=\"font-size: 16px;\"\u003eThese heavy-duty pre-charged couplers are made for MRCOOL’s high-performance central ducted systems, including the \u003cstrong\u003eUniversal Series, Hyper Heat, and VersaPro™ Heat Pumps\u003c\/strong\u003e. Compatible with both 1st Gen and 2nd Gen models, this connection type supports larger system requirements for superior whole-home heating and cooling.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 22px; color: #0066cc;\"\u003eWhy Buy From MRCOOL DIY Direct – The USA’s Most Trusted MRCOOL Dealer\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px;\"\u003eWhen it comes to purchasing HVAC equipment online, trust matters. \u003cstrong\u003eMRCOOL DIY Direct\u003c\/strong\u003e is the nation's most reliable and authorized dealer of MRCOOL systems and accessories. As a family-owned, first responder–founded business, we proudly support American homeowners and contractors with:\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul style=\"font-size: 16px; padding-left: 20px;\"\u003e\n\u003cli\u003e✅ Direct-from-warehouse pricing with fast shipping across the USA\u003c\/li\u003e\n\u003cli\u003e✅ Full factory warranty support and real-time customer service\u003c\/li\u003e\n\u003cli\u003e✅ In-stock coupler kits, line sets, and installation accessories\u003c\/li\u003e\n\u003cli\u003e✅ Expert knowledge of MRCOOL DIY, EasyPro, VersaPro™, and Universal Systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 16px;\"\u003eWhether you’re expanding a new install or customizing your current setup, our \u003cstrong\u003eMRCOOL coupler kits\u003c\/strong\u003e give you the flexibility to reach any location—while maintaining full system integrity. Don't risk leaks or compatibility issues by using aftermarket parts—choose MRCOOL-authorized components from the dealer you can trust.\u003c\/p\u003e\n\u003ch1\u003e\u003cspan\u003eSpecifications \u0026amp; Dimensions\u003c\/span\u003e\u003c\/h1\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 15px; line-height: 1.6;\"\u003e\n\u003cthead style=\"background-color: #004d99; color: white;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 12px; border: 1px solid rgb(204, 204, 204); width: 16.458%;\"\u003eMRCOOL Series\u003c\/th\u003e\n\u003cth style=\"padding: 12px; border: 1px solid rgb(204, 204, 204); width: 18.7835%;\"\u003eGeneration\u003c\/th\u003e\n\u003cth style=\"padding: 12px; border: 1px solid rgb(204, 204, 204); width: 18.7835%;\"\u003eRefrigerant\u003c\/th\u003e\n\u003cth style=\"padding: 12px; border: 1px solid rgb(204, 204, 204); width: 19.3202%;\"\u003eCoupler Compatible\u003c\/th\u003e\n\u003cth style=\"padding: 12px; border: 1px solid rgb(204, 204, 204); width: 10.1968%;\"\u003eLine Set Size\u003c\/th\u003e\n\u003cth style=\"padding: 12px; border: 1px solid rgb(204, 204, 204); width: 16.458%;\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eDIY Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e3rd Gen\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-410A\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e1\/2\" x 1\/4\", 3\/8\" x 5\/8\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eStandard DIY mini split sizes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eDIY Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e4th Gen\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-410A\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e1\/2\" x 1\/4\", 3\/8\" x 5\/8\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eSame sizes as 3rd Gen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eDIY Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e5th Gen\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-454B\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e1\/2\" x 1\/4\", 3\/8\" x 5\/8\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eNew refrigerant; same fitting sizes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eEZPRO Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e1st Gen\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-410A\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e1\/2\" x 1\/4\", 3\/8\" x 5\/8\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eLegacy EZPRO mini splits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eEZPRO Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e5th Gen\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-454B\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e1\/2\" x 1\/4\", 3\/8\" x 5\/8\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eSame size as older EZPRO, new refrigerant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eVersaPro™ Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e1st Gen (1.5–2.5 Ton)\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-410A\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e3\/8\" x 5\/8\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eSame as 24K\/36K DIY systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eVersaPro™ Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e1st Gen (3–5 Ton)\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-410A\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e3\/8\" x 3\/4\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eSame as Universal \u0026amp; HyperHeat 1st Gen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eVersaPro™ Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e2nd Gen\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-454B\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e3\/8\" x 3\/4\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eSame as HyperHeat \u0026amp; Universal 2nd Gen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eHyperHeat Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e1st Gen\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-410A\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e3\/8\" x 3\/4\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eStandard ducted configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eHyperHeat Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e2nd Gen\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-454B\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e3\/8\" x 3\/4\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eSame as VersaPro \u0026amp; Universal 2nd Gen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eUniversal Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e1st Gen\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-410A\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e3\/8\" x 3\/4\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eDucted heat pump systems (2–5 ton)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eUniversal Series\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003e2nd Gen\u003c\/td\u003e\n\u003ctd style=\"width: 18.7835%;\"\u003eR-454B\u003c\/td\u003e\n\u003ctd style=\"width: 19.3202%;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"width: 10.1968%;\"\u003e3\/8\" x 3\/4\"\u003c\/td\u003e\n\u003ctd style=\"width: 16.458%;\"\u003eMatches VersaPro \u0026amp; HyperHeat 2nd Gen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"MRCOOL DIY Direct","offers":[{"title":"6K Mini-Split : 1\/4\" x 3\/8\"","offer_id":49176021041379,"sku":"15500305000044 + 15500305000040","price":193.0,"currency_code":"USD","in_stock":true},{"title":"9K Mini-Split : 1\/4\" x 3\/8\"","offer_id":49176021074147,"sku":"15500305000044 + 15500305000040","price":193.0,"currency_code":"USD","in_stock":true},{"title":"12K Mini-Split : 1\/4\" x 3\/8\"","offer_id":49176021106915,"sku":"15500305000044 + 15500305000040","price":193.0,"currency_code":"USD","in_stock":true},{"title":"18K  Mini-Split : 1\/2\" x 1\/4\"","offer_id":49176021139683,"sku":"15500305000044 + 15500305000040","price":193.0,"currency_code":"USD","in_stock":true},{"title":"24K Mini-Split : 3\/8\" x 5\/8\"","offer_id":49176021172451,"sku":"DIYCOUPLERS-ONLY-24k-36k","price":205.0,"currency_code":"USD","in_stock":true},{"title":"36K Mini-Split : 3\/8\" x 5\/8\"","offer_id":49176021205219,"sku":"DIYCOUPLERS-ONLY-24k-36k","price":193.0,"currency_code":"USD","in_stock":true},{"title":"Universal Central Ducted 1st or 2nd Gen","offer_id":49176021237987,"sku":"NVCOUPLER-3834","price":159.0,"currency_code":"USD","in_stock":true},{"title":"VersaPro Central Ducted 2nd Gen","offer_id":49176021270755,"sku":"NVCOUPLER-3834","price":159.0,"currency_code":"USD","in_stock":true},{"title":"HyperHeat Central Ducted 1st or 2nd Gen","offer_id":49176021303523,"sku":"NVCOUPLER-3834","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/8752\/3043\/files\/1-2_x_1-4_MrCool_DIY_Coupler_Kit_-_No_Communication_Wire_for_9K_-_12K_18k_Line_Set_Size_-_-4480525_9e07b614-8e9f-44b5-ae49-6fe420f0b6ae.webp?v=1780843067","url":"https:\/\/freedomhvacsupply.com\/products\/line-set-coupler-kit-for-all-diy-pre-charged-systems-r-410a-r-454b","provider":"Freedom HVAC Supply","version":"1.0","type":"link"}