Pre-Insulated Copper Refrigerant Line Set
About this product
The line set is what physically connects your outdoor AC condenser to the indoor air handler or evaporator coil. No line set, no cold air — this is required for every split-system install.
What it does
A line set is two copper refrigerant lines (a suction line and a liquid line) pre-insulated and coiled for install. Our line sets use tear-resistant white UV-stable insulation, flared ends, and are made to ACR (Air Conditioning & Refrigeration) spec.
Why you'll want it
- Required for every split-system install — pre-charged equipment only contains enough refrigerant for short-run factory lengths
- Pre-insulated so refrigerant stays at temperature between units (uninsulated copper = lost efficiency)
- Tear-resistant white insulation holds up in attics, exterior walls, and crawl spaces
- Flared fittings match industry-standard AC connection ports
Installation
Run the line set between the outdoor condenser location and indoor air handler. Install techs typically use 25 ft for close-coupled installs (condenser within 10 ft of the air handler), 50 ft for typical residential runs, and longer for homes with far outdoor placements. After connecting, the system must be vacuum-purged and refrigerant-charged by a licensed HVAC technician.
What's in the box
- Pre-insulated copper line set (liquid + suction lines)
- Factory-flared connection ends
- UV-stable white insulation rated for outdoor exposure
Common questions
It's determined by your system's tonnage. For most 2-3 ton systems, use 3/8" × 3/4". For 3.5-5 ton systems, use 3/8" × 7/8". Our product options are labeled by tonnage.
Measure the straight-line distance between your outdoor condenser and indoor air handler, then add 15-20% for bends and slack. Common choices are 25 ft (close installs) and 50 ft (typical homes).
The physical run can be DIY, but charging the system with refrigerant requires EPA 608 certification. We recommend a licensed installer for the full job.
Specifications
| Brand | JMF |
| SKU | JMF-DL04060825H |
| Type | Line Sets |
| Warranty | Manufacturer |
| Shipping | Free pallet freight |
What customers are saying
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