Pre-Insulated Line Set for Wall-Mounted Heat Pump – 50 ft Roll
Both copper lines of a wall-mount heat pump, already insulated and ready to unroll between the indoor and outdoor units.
AirGreen codeAG-LS-00103
514 316-2973 · sales@airgreen.ca
Quick facts
The pre-insulated line set combines the two copper tubes of a wall-mounted heat pump: the liquid line and the gas line, each already covered with insulation. Sold in a 50 ft roll, it unrolls between the indoor unit and the outdoor unit, is cut to the required length and is connected with flare fittings.
Connecting the indoor and outdoor units in one piece
Since the insulation is already in place, there is no need to slide it over the full length of the tubes, which speeds up the job and reduces the risk of tears. We use it for wall-mounted heat pumps and to connect an indoor head to a multi-zone outdoor unit, through a wall, in a recessed box or under a finishing line cover.
Four liquid × gas sizes
- 1/4 × 3/8 in
- 1/4 × 1/2 in
- 1/4 × 5/8 in
- 3/8 × 3/4 in
The first figure is the outside diameter of the liquid line, the second that of the gas line. The right size is the one matching your unit’s connections, given in its installation manual: send us the model number and we will confirm it.
Before connecting
Check the maximum line length and elevation difference allowed by the unit’s manufacturer. Cut square, deburr and flare with a suitable tool, then do the dry nitrogen pressure test and the evacuation before opening the valves. This work is reserved for a qualified refrigeration technician.
Installed by AirGreen across Greater Montréal
Our refrigeration technicians install the refrigerant lines for every wall-mounted heat pump in Montréal, Laval, Longueuil, on the South Shore and on the North Shore. RBQ licence 5645-9605-01. To check availability or get a quote, call us at 514 316-2973 or email sales@airgreen.ca with the size and the number of rolls.
One piece to connect both units
The set pairs the liquid and gas lines under insulation: unroll, cut and connect.
- Connecting a wall-mount heat pump between the indoor and outdoor units
- Connecting an indoor head to a multi-zone outdoor unit
- Replacing a damaged line set
- Runs inside a wall box or under a line-set cover
4 sizes, one page
Each size has its own AirGreen code. Tap a row to select it.
| Diameters | Liquid line | Gas (suction) line | AirGreen code |
|---|---|---|---|
| 1/4 × 3/8 in | 1/4 in | 3/8 in | AG-LS-00101 |
| 1/4 × 1/2 in | 1/4 in | 1/2 in | AG-LS-00102 |
| 1/4 × 5/8 in | 1/4 in | 5/8 in | AG-LS-00103 |
| 3/8 × 3/4 in | 3/8 in | 3/4 in | AG-LS-00104 |
Liquid × gas, outside diameter. Example: 1/4 × 1/2 in = 1/4 in liquid line and 1/2 in gas line.
Specifications
From the manufacturer’s documentation. A value the manufacturer does not publish is not listed.
What to know before installing
- Pick the size from the connection sizes listed in the equipment manual.
- Check the maximum line length and height difference allowed by the equipment maker.
- Cut square, deburr and flare with a proper flaring tool.
- Keep the ends closed until connection so the tubes stay clean and dry.
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Frequently asked questions
Which size fits my heat pump?
The one that matches your unit’s connection sizes, listed in the installation manual or on the outdoor unit. Send us the model number and we confirm the size.
What does 1/4 × 1/2 in mean?
The liquid line is 1/4 in outside diameter and the gas line is 1/2 in.
Are flare nuts included?
Nothing indicates it for this coil. Check what comes with your equipment; if needed, we sell brass flare nuts individually.
Can you install it?
Yes. Our technicians install the line set, pressure-test it and pull the vacuum when they install your heat pump.
Pre-insulated lines for your wall-mount heat pump
Tell us the size and the quantity: we confirm availability and send you a quote. Or let our technicians install it for you.
Specifications from the manufacturer’s documentation, checked on October 7, 2026.