The MRCOOL 5th Gen DIY Line Set is a required component for installing your MRCOOL DIY ductless mini-split system. This 50-foot model is pre-charged with environmentally friendly R-454B refrigerant and works with MRCOOL's DIY 5th Gen 18K air handler units, featuring 1/4” liquid and 1/2” suction lines.
Equipped with Quick Connect fittings, the line set allows for fast, tool-free installation—no vacuuming, charging, or special certifications needed. Built with durable, kink-resistant materials and a leak-proof design, it ensures long-lasting, efficient performance. Available in multiple lengths, it’s the key to making your HVAC setup truly DIY-friendly.
| DIMENSIONS | |
|---|---|
| Gross Dimensions | 37.2" D x 4.92" H x 37.2" W |
| Net Weight (Lbs) | 26.7 |
| Gross Weight (Lbs) | 32.2 |
| Liquid Line Size | 1/4 |
| Suction Line Size | 1/2 |
| GENERAL INFORMATION | |
| Series | 5th Gen DIY Line Set - R-454B |
| Color | White |
| Color Family | Bronze/Copper Metallic |
| Line Set Length | 50 ft |
| Lineset Fitting Type | Quick-Connection |
| Refrigerant Type | R-454B |
| Refrigerant Volume (Oz) | 6.07 |
| Has Batteries | No |
| Contains Electronics | No |
| Contains Chemicals | Yes |
| Contains Aerosol | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Restricted States |
|
| Registered Warranty | N/A |
| FEATURES | |
| Compatible Air Handlers | 18K 5th Gen DIY |
The MRCOOL 5th Gen DIY Line Set is a required component for installing your MRCOOL DIY ductless mini-split system. This 16-foot model is pre-charged with environmentally friendly R-454B refrigerant and works with MRCOOL's DIY 5th Gen 18K air handler units, featuring 1/4” liquid and 1/2” suction lines.
Equipped with Quick Connect fittings, the line set allows for fast, tool-free installation—no vacuuming, charging, or special certifications needed. Built with durable, kink-resistant materials and a leak-proof design, it ensures long-lasting, efficient performance. Available in multiple lengths, it’s the key to making your HVAC setup truly DIY-friendly.
| DIMENSIONS | |
|---|---|
| Gross Dimensions | 28.94" D x 4.92" H x 28.94" W |
| Net Weight (Lbs) | 8.8 |
| Gross Weight (Lbs) | 12.3 |
| Liquid Line Size | 1/4 |
| Suction Line Size | 1/2 |
| GENERAL INFORMATION | |
| Series | 5th Gen DIY Line Set - R-454B |
| Color | White |
| Color Family | Bronze/Copper Metallic |
| Line Set Length | 16 ft |
| Lineset Fitting Type | Quick-Connection |
| Refrigerant Type | R-454B |
| Refrigerant Volume (Oz) | 2.12 |
| Has Batteries | No |
| Contains Electronics | No |
| Contains Chemicals | Yes |
| Contains Aerosol | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Restricted States |
|
| Registered Warranty | N/A |
| FEATURES | |
| Compatible Air Handlers | 18K 5th Gen DIY |
When one standard size DIY® QUICK CONNECT® LINE SET is not long enough, two standard QUICK CONNECT® LINE SETS can be combined using our DIY® COUPLER to increase the desired length of the QUICK CONNECT® LINE SETS.
Use this DIYCOUPLER if you have a 9K, 12K or 18K Air Handler. This also comes with 75ft of Communication Wire.
| DIMENSIONS | |
|---|---|
| Dimensions | 11"W x 22.5"D x 4.5"H |
| Weight | 6.39 lbs |
| GENERAL INFORMATION | |
| Unit Type | Accessories |
| Equipment Type | Coupler |
| Color | Copper |
| California Residents | See Prop 65 WARNING |
| Freight Class | 92.5 |
