---
product_id: 43508031
title: "DuctlessAire Insulated Copper Twin Line Set for Ductless Mini Split Air Conditioner and Heat Pump System - Insulation Copper Pipe Coil Tubing for HVAC, AC & More - Universal Cover (25ft, 1/4 x 1/2 in)"
brand: "ductlessaire"
price: "₩430002"
currency: KRW
in_stock: true
reviews_count: 8
url: https://www.desertcart.kr/products/43508031-ductlessaire-insulated-copper-twin-line-set-for-ductless-mini-split
store_origin: KR
region: South Korea
---

# Condensate drain wire for moisture control 3/8" closed-cell PE insulation for max energy savings Pre-flared brass nuts for tool-free install DuctlessAire Insulated Copper Twin Line Set for Ductless Mini Split Air Conditioner and Heat Pump System - Insulation Copper Pipe Coil Tubing for HVAC, AC & More - Universal Cover (25ft, 1/4 x 1/2 in)

**Brand:** ductlessaire
**Price:** ₩430002
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay cool, save energy, and install like a pro!

## Quick Answers

- **What is this?** DuctlessAire Insulated Copper Twin Line Set for Ductless Mini Split Air Conditioner and Heat Pump System - Insulation Copper Pipe Coil Tubing for HVAC, AC & More - Universal Cover (25ft, 1/4 x 1/2 in) by ductlessaire
- **How much does it cost?** ₩430002 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/43508031-ductlessaire-insulated-copper-twin-line-set-for-ductless-mini-split)

## Best For

- ductlessaire enthusiasts

## Why This Product

- Trusted ductlessaire brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Moisture Mastery:** Built-in condensate drain wire keeps your system dry and efficient.
- • **Durable Copper Core:** ASTM B280 certified copper tubing ensures long-lasting thermal performance.
- • **Effortless Installation:** Pre-flared brass nuts eliminate extra fittings and speed up setup.
- • **Energy-Smart Insulation:** Thick closed-cell PE shell slashes heat transfer and cuts energy waste.
- • **Universal HVAC Compatibility:** Fits most mini split ACs and heat pumps with 1/4" x 1/2" copper tubing.

## Overview

The DuctlessAire 25ft Insulated Copper Twin Line Set is a premium HVAC accessory featuring ASTM B280 certified copper tubing with 3/8" closed-cell polyethylene insulation. Designed for mini split AC and heat pump systems, it includes pre-flared brass nuts for quick installation and a condensate drain wire for effective moisture management, ensuring reliable, energy-efficient performance across residential and commercial setups.

## Description

Full description not available

## Features

- COPPER TUBING FOR PERFORMANCE: DuctlessAire’s 25ft Mini Split Line Set features copper tubing designed for air conditioning and heat pump systems. It complies with ASTM B280 standards, ensuring compatibility with air conditioning and refrigeration applications. The copper construction supports efficient thermal performance for heating and cooling, helping to maintain effective system operation over time.
- INSULATION FOR ENERGY CONSERVATION: The line set comes with white polyethylene (PE) hard shell insulation that has a 3/8" thickness. Its closed-cell structure helps reduce heat transfer, promoting the HVAC system's efficiency. This insulation also helps minimize condensation, ensuring the system operates effectively in varying environmental conditions while supporting energy conservation efforts.
- EASY INSTALLATION WITH PRE-FLARED LINES: This line set includes pre-flared brass nuts on both ends, making installation straightforward. The pre-flared design eliminates the need for additional fittings or tools, ensuring easy and secure connections between the indoor and outdoor units. This feature simplifies the installation process, saving time while maintaining a reliable and secure connection.
- CONDENSATE DRAIN WIRE FEATURE: This 25ft line set is equipped with a condensate drain wire that helps manage moisture during system operation. The 25ft length provides ample reach for installation, ensuring proper moisture management across a wider area. This feature directs excess moisture away from the system, supporting smooth operation and helping maintain the system's performance in various weather conditions.
- COMPATIBLE WITH HVAC SYSTEMS: The DuctlessAire 25ft Mini Split Line Set is compatible with most mini split air conditioners and heat pump systems. With dimensions of 1/4 x 1/2 inches, it is designed to integrate with a variety of HVAC setups. The copper tubing and insulation ensure reliable operation, making it suitable for different installations, both residential and commercial, to meet varying performance needs.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | DuctlessAire |
| Material | Copper |
| Color | Black |
| Product Dimensions | 300"L x 0.5"W |
| Item Weight | 3.97 Kilograms |
| Outside Diameter | 0.5 Inches |
| Item Length | 300 Inches |
| UPC | 627144103284 |
| Manufacturer | Diversitech |
| Part Number | D141238-25-MS-TC-16/6 |
| Item Weight | 8.73 pounds |
| Item model number | D141238-25-MS-TC-16/6 |
| Is Discontinued By Manufacturer | No |
| Size | 1/4" x 1/2" |
| Power Source | Corded Electric |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** DuctlessAire
- **Material:** Copper
- **Color:** Black
- **Product Dimensions:** 300"L x 0.5"W
- **Item Weight:** 3.97 Kilograms
- **Outside Diameter:** 0.5 Inches
- **Item Length:** 300 Inches
- **UPC:** 627144103284
- **Manufacturer:** Diversitech

## Images

![DuctlessAire Insulated Copper Twin Line Set for Ductless Mini Split Air Conditioner and Heat Pump System - Insulation Copper Pipe Coil Tubing for HVAC, AC & More - Universal Cover (25ft, 1/4 x 1/2 in) - Image 1](https://m.media-amazon.com/images/I/81JtvHDcv+L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Hard to go wrong
*by S***I on June 4, 2020*

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!

### ⭐⭐⭐⭐⭐ As expected
*by R***I on September 29, 2024*

Good product

### ⭐⭐⭐⭐⭐ It works.
*by S***D on June 25, 2018*

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...

## Frequently Bought Together

- DuctlessAire Insulated Copper Twin Line Set for Ductless Mini Split Air Conditioner and Heat Pump System - Insulation Copper Pipe Coil Tubing for HVAC, AC & More - Universal Cover (25ft, 1/4 x 1/2 in)
- Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-05-11*