Mitsubishi Line-Hide Buying Guide

Mitsubishi Line-Hide Buying Guide

How to Pick the Perfect Line Set Cover

By  |  Product Expert
By  |  Product Expert

Installing a line set cover is the icing on the cake for your mini-split system. If you want your setup to look the most professional and clean with added performance benefits, a line set cover is a must-have accessory for every new and existing mini-split system.


The Line-Hide system from Mitsubishi protects your line sets from exposure to the elements, including UV rays which can break down insulation over time. They are also designed to protect drain lines and wiring.


As an added benefit, the Line-Hide system is paintable so you can match the color of your siding, preserving the décor of your home.


Common Questions


What is Line-Hide?

Line-Hide is a product from Mitsubishi Electric that is designed to conceal and protect your copper line set and control wiring required for a mini split system.


Can UV rays really damage my line set?

The insulation used in line sets does break down over time. Direct exposure to sunlight and the elements hastens this breakdown.


How does Line-Hide help?

Line-Hide helps protect line sets because it forms a barrier around the line set and control wiring that prevents direct exposure to sunlight and elements. Line-Hide is made of high-quality PVC with UV inhibitors for outdoor service in all weather conditions.


Can I paint Line-Hide?

Yes! Line-Hide can be painted with most house paints to match exterior décor.


How do you install Line-Hide?

Installation is a breeze with the modular design and snap-on components. Where screws are required, they are included with the products.


Can I use Line-Hide indoors?

Yes! Line-hide meets UL94v-0 for interior applications. Use it anywhere you want to conceal cabling, piping, or wiring.


Shop All Mini Split Line Set Covers


A Typical Application

CD - Split Line Tube: Conceals and protects line set, drain tubing, and connecting wire from elements
NR - End Socket: Used to seal line set cover at condenser
NE - Horizontal Elbow: Used to turn on the wall of installation (avoid obsticles such as windows, etc.)
NC - Vertical Elbow: Used to turn into or away from the wall of installation (Go around corners, under soffits, etc.)
NS - Socket/Coupling: Used to connect two split line tubes (CD) in a straight run
NW - Wall Cover: Used to seal around wall penetration


Choosing Your Size

Mitsubishi Line-Hide products come in several sizes that give your installation a professional finish. Below, you'll find a sizing chart to help you quickly find the correctly-sized cover for your application. The chart is laid out to show how many line sets of a particular size will fit into each diameter of covers.


Cover Size # of 1/4" x 3/8" Line Sets # of 1/4" x 1/2" Line Sets # of 1/4" x 5/8" Line Sets # of 3/8" x 5/8" Line Sets
1 1 1 0
4" (CD-100) 2 2 1 1
3 3 2 2
Note: 1 Line Set = 1 Suction and Liquid Line, Drain Tubing, and Communication Cable.


Links to Common Products

Below you'll find links to the most common line-hide products. With a combination of the pieces below, you can successfully install the line-hide system for most basic applications.


CD-75 NR-75 NE-75 NC-75 NS-75 NW-75
CD-100 NR-100 NE-100 NC-100 NS-100 NW-100
CD-140 NR-140 NE-140 NC-140 NS-140 NW-140


Other Line-Hide Products

In case your application is more complicated, the line-hide system includes products to fit almost all requirements. A complete list, with links, is below:


NY - Simple Wall Cover
Used to seal around wall penetration. We recommend NW instead, as it is easier to install.
Available Sizes: NY-75, NY-100, NY-140
NX - Universal Horizontal Elbow
Used to create angles between 45° to 90° on the wall of installation.
Available Sizes: NX-75, NX-100, NX-140
NZ - Universal Vertical Elbow
Used to create angles between 45° to 90° into or away from the wall of installation.
Available Sizes: NZ-75, NZ-100, NZ-140
NM - 45° Horizontal Elbow
Used to create angles of 45° on the wall of installation.
Available Sizes: NM-75, NM-100, NM-140
NU - 45° Vertical Elbow
Used to create angles of 45° into or away from the wall of installation.
Available Sizes: NU-75, NU-100, NU-140
NK - Wall Entry Fitting
Used to seal penetration when line set runs perpendicular to entry wall.
Available Sizes: NK-75, NK-100, NK-140
NT - T-Joint
Used to split the path of a line-hide installation.
Available Sizes: NT-75, NT-100, NT-140
NA - Corner Cap/Soffit Entry Fitting
Used to seal around penetration in soffit.
Available Sizes: NA-75, NA-100, NA-140
NF - Flexible Joint
Used to connect segments for unique applications.
Available Sizes: NF-75, NF-75M, NF-100, NF-140


Mini Split Wiring

Up next in our complete guide to mini split systems is the wiring guide. Many people don't realize the importance of choosing the right type of wiring.


NEXT: What You Should Know About Mini Split Wiring