MRCOOL DIY Line Set Coupler Kit 3/8" + 5/8" (Two Sets) w/ 75 ft Communication Wire — DIYCOUPLER-3858K75C
Overview
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.
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We will prepare your order within 24 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map
IMPORTANT DELIVERY INFORMATION: Please be kindly informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery. To AVOID delays, please check if the provided phone number in the order details is a current number where you can be reached. You can also contact the carrier directly and refer to your tracking number to set up a date and time for your appointment. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. PLEASE verify your shipping address, as changes to the address after freight has shipped can result in an additional 15% or higher fee depending on freight weight and dimensions.
SMALLWARES INFORMATION: Please be informed that for smaller items, such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves, when these items are ordered individually, they may be shipped via FedEx without a signature requirement. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. Thank you for your understanding and cooperation.
INSPECT YOUR MERCHANDISE BEFORE SIGNING: Please inspect your boxes thoroughly when you receive them. They should arrive shrink-wrapped and on a pallet. If you notice any damages or imperfections (e.g. crushed box or forklift hole), please write comments on the receipt before signing for delivery, no matter how small damages seem. Contact us immediately to assist you.
Shipping & Delivery
We will prepare your order within 24–48 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map
IMPORTANT DELIVERY INFORMATION
Please be informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery.
To AVOID delays, please make sure the phone number in your order details is accurate and one where you can be reached. You may also contact the carrier directly using your tracking number to schedule your delivery.
It is your responsibility to ensure a safe and secure delivery environment. We are not liable for any packages that are stolen or lost after delivery is confirmed.
Please verify your shipping address carefully. Changes to your shipping address after the freight has been shipped may result in additional fees of 15% or more, depending on freight weight and dimensions.
SMALLWARES INFORMATION
Smaller items such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves may be shipped via FedEx without a signature requirement if ordered individually.
It is your responsibility to ensure a safe delivery location. We are not liable for packages lost or stolen after delivery confirmation. Thank you for your understanding and cooperation.
INSPECT YOUR MERCHANDISE BEFORE SIGNING
Please inspect your boxes carefully upon delivery. Shipments should arrive shrink-wrapped and on a pallet. If you notice any damage or signs of mishandling (such as a crushed box or forklift puncture), write comments on the delivery receipt before signing, even if the damage appears minor.
Contact us immediately if any issues arise so we can assist you promptly.
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