MRCOOL — Line Set Fittings
MRCOOL DIY Line Set Coupler Kit 3/8" + 5/8" (Two Sets) w/ 75 ft Communication Wire — DIYCOUPLER-3858K75C
Overview
3/8" + 5/8" Couplers Two Sets 75 ft Communication Wire Coupler (Accessory) Copper Finish Prop 65
The MRCOOL® DIYCOUPLER-3858K75C is a line set coupler kit intended to join compatible line set connections using 3/8" and 5/8" couplers. It also includes 75 ft of communication wire for supported installations. Use the included installation instructions to confirm proper fitment and procedure for your specific MRCOOL system.
Highlights
- Kit contents: DIYCOUPLER-38 + DIYCOUPLER-58 (two sets) plus 75 ft communication wire.
- Sizes: 3/8" liquid-side coupler and 5/8" suction-side coupler.
- Category: Line set fitting / coupler accessory.
- Shipping info: Freight class 77.5 listed.
- Compliance: Proposition 65 warning applies.
What’s Included
- 3/8" coupler: DIYCOUPLER-38 (two sets)
- 5/8" coupler: DIYCOUPLER-58 (two sets)
- 75 ft communication wire
Specifications
| Brand | MRCOOL |
| Series | Line Set Fittings |
| Model | DIYCOUPLER-3858K75 |
| Equipment Type | Coupler |
| Color | Copper (Color family: Bronze/Copper Metallic) |
| UPC | 810035933286 |
| GTIN | 00810035933286 |
| Warranty | Registered warranty: N/A |
| Restricted States/Territories | GU; PR; VI |
| Freight Class | 77.5 |
Dimensions & Weight
| Net Weight | 10.80 lb |
| Gross (Box) | 11.00" W × 22.50" D × 4.50" H • 12 lb |
Documents & Downloads
Important
- Compatibility: Confirm line size and system compatibility before ordering (3/8" + 5/8").
- Prop 65: This product includes a Proposition 65 warning.
- Install guidance: Follow the installation manual for correct procedure and any required tools.
FAQs
What exactly comes in this coupler kit?
It includes DIYCOUPLER-38 and DIYCOUPLER-58 (two sets) plus 75 ft of communication wire.
What line sizes are these couplers for?
3/8" (liquid line) and 5/8" (suction line).
What is the 75 ft communication wire used for?
It’s used for supported system communication/control wiring in installations that require it. Confirm exact wiring needs in your system’s manual.
Will this work with my MRCOOL DIY system?
It’s intended for compatible MRCOOL line set applications using 3/8" + 5/8" connections. Verify model compatibility and procedure in the installation manual before purchase.
Do I need special tools or refrigerant handling to use couplers?
Follow the installation manual. If your installation involves opening a refrigerant circuit or you’re unsure about the procedure, use a licensed HVAC professional.
