Catalog /HVAC Supply Pro
HVAC Supply Pro
Mini Split Line Set + Control Wire — 1/4 in x 1/2 in
The 18,000 BTU line set, for runs longer than the kit in the box.
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Our promise on every order
- Typically ships in 3–7 business days — by UPS Ground from Southwest Florida, delivered to your door.
- Manufacturer specifications, published — model number, capacity, efficiency and refrigerant are all listed below, so you can check this against what your contractor specified.
- Check your match in seconds — put in the two model numbers you were quoted and see whether that pair is AHRI-certified before you spend anything. Not sure, or not our equipment? Send them to us and we will look them up by hand.
- 30 days to return unopened equipment — full returns policy.
About this unit
Insulated copper line set with interconnecting control wire for ductless mini split systems. 1/4 in liquid and 1/2 in suction lines with flared connections.
Sized for 18,000 BTU single-zone systems.
Includes 4-conductor stranded interconnecting cable.
Your system ships with a 9.8 ft line set in the box. Order this only if your run is longer than that. Confirm the required line sizes against your unit's installation manual before ordering — sizes vary by model.
HVAC Supply Pro LLC is an independent retailer. We are not affiliated with, endorsed by, or an authorized dealer of Trane, RunTru or Everwell; brand names are used only to identify the equipment we sell. All equipment is new, in its original factory packaging.
Product photos are representative manufacturer images; actual appearance may vary slightly.
Key features
- 1/4 in liquid and 1/2 in suction, flared connections
- Sized for 18,000 BTU single-zone systems
- Insulated copper — no separate lagging to buy
- Includes the 4-conductor stranded control cable
- Only needed if your run exceeds the 9.8 ft kit already in the box
- Confirm line sizes against your unit's installation manual — they vary by model
Why the line set matters
The line set is the pair of insulated copper lines carrying refrigerant between the outdoor and indoor units. Get it wrong and the equipment never performs, however good it is.
- Diameter is not a preference. Each system specifies a liquid and suction line size. Undersized suction line starves the compressor; oversized liquid line upsets the metering. The sizes are on the specifications panel of every condenser we sell.
- Reusing the old set is a false economy. Old R-410A line sets carry oil residue that is not compatible with the newer refrigerants, and a set that has been open to the air holds moisture. Flushing is possible; a new set is cleaner and cheaper than the callback.
- Length changes the charge. Equipment ships charged for a tested length — usually around ten to fifteen feet. Past that, your installer adds refrigerant per foot. Buy the length you need rather than coiling forty feet of surplus behind the unit.
- Insulation is not optional in a hot attic. Uninsulated or thinly insulated suction line sweats, drips onto ceilings, and costs capacity every foot of the run.
Specifications & documents
Manufacturer-published figures for the model you have selected above.
| Model number | LS-MINI-14X12-25 |
|---|---|
| Length | 25 feet |
| System type | Accessory |
| Efficiency | - |
| Refrigerant | - |
| Dimensions | - |
| Warranty | No separate manufacturer warranty is offered on this accessory. If it arrives damaged, email photos to sales@hvacsupplypro.com within 24 hours of delivery. Unopened items can be returned within 30 days under our refund policy. |
| Price | $269.00 |
All models in this series
Every size we carry, with the full model number your installer and AHRI will ask for.
| Model number | Size | Price |
|---|---|---|
| LS-MINI-14X12-15 | 15 feet | $209.00 |
| LS-MINI-14X12-25 | 25 feet | $269.00 |
| LS-MINI-14X12-50 | 50 feet | $429.00 |
Reviews
Left by people who bought this from us.
Shipping & returns
- $29 by UPS Ground, delivered to your door. $69 for 50 feet (40 lb and over). Ships to the 48 contiguous states and DC.
- Must be installed by a licensed HVAC professional — opening refrigerant lines requires EPA certification.
- 30-day returns on unopened equipment, 20% restocking fee. No returns on installed units.
How buying the equipment yourself works — the whole process, start to finish
You are buying the equipment from us and the labour from an installer you choose. Two numbers instead of one bundled quote — which is the point, but it does mean you are the one connecting them. Here is the whole sequence.
- Order the equipment. The price on this page is what you pay us. Nothing about installation is included in it, and nothing is added later.
- Line up your installer before it ships. This is the step people skip, and it is the one that causes trouble — equipment sitting in a garage while you ring round for someone free. You need a licensed HVAC professional; opening a refrigerant circuit requires EPA certification. Ask specifically what they charge to install customer-supplied equipment. How to find one.
- It ships by UPS Ground. Orders typically ship within 3–7 business days. UPS delivers to your door for one flat rate, with nothing to choose at checkout. What delivery costs.
- UPS brings it to your door. There is no delivery appointment to book, as there is for freight — it arrives like any other UPS parcel.
- Check it when it arrives. Look over the box before you open it, photograph any damage, and report it to us within 24 hours. Damage and returns.
- Your installer fits it. Warranty terms.
Stuck on any of it, or not sure a pairing is right? Call (239) 266-9766 — you'll get a straight answer.
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