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The DuctlessAire 25ft Insulated Copper Twin Line Set is a premium HVAC accessory featuring ASTM B280 certified copper tubing and 3/8" thick closed-cell polyethylene insulation. Designed for universal compatibility with mini split air conditioners and heat pumps, it includes pre-flared brass nuts for quick installation and an integrated condensate drain wire to manage moisture, ensuring optimal system performance and energy conservation.


| Brand | DuctlessAire |
| Material | Copper |
| Color | Black |
| Product Dimensions | 300"L x 0.25"W |
| Outside Diameter | 0.25 Inches |
| Item Length | 300 Inches |
| UPC | 627144103260 758149825786 |
| Manufacturer | DuctlessAire |
| Part Number | D141238-25 |
| Item Weight | 7.54 pounds |
| Item model number | D141238-25 |
| Is Discontinued By Manufacturer | No |
| Size | 1/4" x 3/8" |
| Shape | Tumblers |
| Power Source | Corded Electric |
| Voltage | 100 Volts |
| Installation Method | Split system |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
S**I
Hard to go wrong
When a product is done right for the task; it's really hard for it to be wrong. This is a line-set designed for mini-split AC/HP applications & there's nothing wrong with it, whatsoever. It is exactly what I expected it to be.I will say (should anyone be wondering) that the fittings are the heavier-duty style and much less prone to splitting due to water leaching into the bell & freezing. The insulation on this type of line-set is easy to work with & to pull through holes than the old-school foam type, and since it's melded together, it really suits Mini-split installations.I was not expecting to be blown away, and I wasn't; but that said... there's nothing bad to say either.Good product, packed right, shipped fairly quickly, and matched it's purpose quite well. It was just as advertised, and I had no issues. Overall, nothing bad to say > good review!
R**I
As expected
Good product
K**N
Works well as a replacement
I bent the one that came with my ductless air mini split. The only real difference is the factory one has an offset to hook up to the indoor unit. This one does not
S**D
It works.
This arrived in slightly damaged packaging with some small dents in some of the insulation, but it worked well. I installed it in a cooper&hunter ductless mini-split, used nylog blue lubricant on the threads and flairs, and torqued it to the specs in the installation manual with a digital torque wrench and it seems to work well with no leaks (the unit has been running well for over 10 days now.) I ended up not using the plastic hole guide thingy as I didn't have a hole saw large enough for it. Instead I 3d-printed one that was 2.25" O.D. with 2mm thick walls. The tubing was a tight squeeze, but doable. I also only needed one of the 4 included rolls of rubbery non-sticky tape stuff. The line hiding kit I purchased (not from ductless air but one that's half the price) didn't allow for a 4" bending radius. This is the reason for the ball of duct tape at the top. I hope the HOA doesn't notice...
T**E
Gotcha! on the length...
I got this for my mini split, which comes pre-charged for up to 25 feet of line. But the unit has 2 feet of line already, so the grand total is 27 feet, which requires additional gas in the system... or you could cut two feet off of this, but then you'll need a flaring tool to fix the ends.This isn't their fault, but it would be nice if they could mention that in the description.
M**C
Top quality product
Well packaged. Flares were well made, and insulation and outercovering were the best I've found.
9**1
was exactly as described
was packed in a clear sealed bag and placed in a strong cardboard box and shipped quickly.Would certainly purchase this item again if needed.
X**X
This worked great for me. Fit well but I also used the purple FlareSeal washers.
This worked great for me. Fit well but I also used the purple FlareSeal washers.
Trustpilot
3 days ago
4 days ago