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MRCOOL DIY 50' Quick Connect Line Set Kit for 9k, 12k, and 18k Air Handlers-R410A

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Customer reviews
Rating:
5 out of 5
Out of stock
By

MRCOOL

Out of stock

Model

(2) DIY25-1412 / DIYCOUPLER-1412K75C

ID

83622

This MRCOOL DIY ductless mini-split 50' quick connect line set kit works with 9K, 12K, and 18K air handlers.

Includes:

  • 2 25' MRCOOL quick connect line sets for 9K, 12K, and 18K air handlers
  • MRCOOL DIY 50' Line Set Couplers - 1/4" x 1/2
MRCOOL DIY R410A 25' Quick Connect Line Set for 9k, 12k, and 18k Air Handlers

MRCOOL DIY R410A 25' Quick Connect Line Set for 9k, 12k, and 18k Air Handlers

Designed for R410A systems, the DIY25-1412 coupler joins two precharged line sets to extend reach, keeping older mini split units running smoothly with easy DIY installs.

Key Features

  • 25-foot pre-charged quick connect line set for MRCOOL DIY mini split systems.
  • Compatible with 9k, 12k, and 18k MRCOOL DIY indoor air handlers.
  • Designed for systems using R410A refrigerant.
  • Quick connect fittings simplify installation and reduce setup time.
  • Factory-sealed lines help maintain proper refrigerant charge.
  • Durable insulation helps protect refrigerant lines and improve efficiency.

Feature Highlights

Pre-Charged for Faster Installation

This 25-foot line set comes pre-charged with the correct amount of R410A refrigerant, eliminating the need for vacuum pumps, gauges, or additional charging during installation. The design makes it ideal for homeowners installing MRCOOL DIY systems.

Quick Connect Design

The quick connect fittings allow the line set to attach directly to compatible MRCOOL DIY indoor air handlers and outdoor condensers. This simplifies the installation process and helps ensure a secure, leak-resistant connection.

Built for Reliable Performance

Constructed with durable copper lines and protective insulation, this line set supports consistent refrigerant flow and long-term system reliability while helping maintain efficient heating and cooling performance.

What’s Included

  • 1 x 25-Foot MRCOOL DIY Quick Connect Pre-Charged Line Set
  • Factory-installed quick connect fittings
  • Insulated refrigerant lines

Recommended Accessories

  • Line Set Covers for exterior protection and a clean installation appearance
  • Wall Sleeve for safe wall penetration
  • Condenser Pad or Wall Mount Bracket
  • Additional Line Set Coupler (if extending system length)

Warranty

The MRCOOL DIY Quick Connect Line Set is backed by the manufacturer’s warranty when used with compatible MRCOOL DIY systems and installed according to manufacturer guidelines.

MRCOOL DIY 75' Line Set Couplers - 1/4" x 1/2"

Coming in as one of the first brands to offer a multi zone DIY mini split, MRCOOL offers the DIYCOUPLER-1412K50 as a means of coupling two of MRCOOL's precharged line sets together to allow for a longer line for installations that need it, all the while keeping the system precharged in nature. To prevent the need of extending the control wire included with the air handler, the coupler also includes 50' of control wire to replace what comes with MRCOOL DIY air handlers. This coupler furthers MRCOOL's ability to provide a simple DIY installation to almost any wall mounted installation. Please note that this line set will only function with MRCOOL's DIY multi zone line of products and will not function with any other brand or system series.

More Information
MRCOOL DIY R410A 25' Quick Connect Line Set for 9k, 12k, and 18k Air Handlers
FeatureSpec
SKUDIY25-1412
Weight (in lbs)30
Brand/ManufacturerMRCOOL
UPC810035931046
RefrigerantR410A
Liquid Line1/4"
Suction Line1/2"
Electrical230 V. 1 Phase 60 Hz
Mini Split TypeWall Mounted
Warranty5-year Parts / 7-year Compressor
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
MRCOOL DIY 75' Line Set Couplers - 1/4" x 1/2"
FeatureSpec
SKUDIYCOUPLER-1412K75C
Weight (in lbs)10
Brand/ManufacturerMRCOOL
UPC810063869571
RefrigerantR410A
Electrical230 V. 1 Phase 60 Hz
Mini Split TypeWall Mounted
Size Range38" Wide & Up
Height4.5
Width11
Depth22.5 in
Warranty5-year Parts / 7-year Compressor
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Top reviews
  1. WORKS GREAT!!
    Quality
    100%
    Service
    100%
    Price
    100%
    Didn't get my electric bill yet, so time will tell; nonetheless, I'm reducing the draw from the 10 circuits needed to run my electric base board heaters into just one circuit!! That should amount to some kind of savings!!

    Review by

    Posted on

Customer Questions
Looks like some electrical wire comes with this. What size is it and how long?
The control wire is 50' long and is 14 gauge. If you have any further questions please feel free to give us a call! Thanks.
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Why Choose MRCOOL?
Why Choose MRCOOL?

MRCOOL mini split systems combine innovative design with advanced manufacturing to deliver efficient, reliable comfort wherever you need it. Built with cutting-edge technology, these systems ensure optimal performance and flexibility for any space.

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