• Description
  • Why Buy From Us

MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 1/4" x 3/8", for DIY 6K, 9K, & 12K Indoor Mini Split Air Handler

The MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set is built to make your DIY mini split installation simple, fast, and efficient. Pre-charged with R-454B refrigerant and designed with secure Quick Connect fittings, this line set removes the need for vacuuming, charging, or specialized tools. Specifically made for MRCOOL DIY 6K, 9K, and 12K indoor mini split air handlers, it ensures a reliable and leak-free connection between indoor and outdoor units.

Please note: This system is designed for DIY installation and includes a pre-charged Quick Connect line set for easy setup without HVAC tools or certification.


MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 1/4" x 3/8", for DIY 6K, 9K, & 12K Indoor Mini Split Air Handler Features

Pre-Charged with R-454B Refrigerant – Eliminates the need for handling refrigerant or vacuuming the lines.

25 Ft. Length – Provides flexibility in installation for various room layouts and system placements.

Durable Copper Tubing – Built for long-lasting performance with superior heat transfer capabilities.

Quick Connect Fittings – Ensure secure, leak-free connections that are DIY-friendly.

Perfect Match Compatibility – Designed for MRCOOL DIY 5th Gen 6K, 9K, and 12K indoor mini split air handlers.


MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 1/4" x 3/8", for DIY 6K, 9K, & 12K Indoor Mini Split Air Handler Applications

  • Bedrooms – Allows flexible unit placement for optimal comfort.

  • Home Offices – Supports efficient installations in small workspaces.

  • Apartments & Condos – Fits perfectly for compact living areas with smaller air handlers.

  • Workshops or Studios – Easy to extend climate control into secondary spaces.


What’s Included?

  • MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 1/4" x 3/8"

  • User Manual

MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 1/4" x 3/8", for DIY 6K, 9K, & 12K Indoor Mini Split Air Handler Specifications

Series

5th Gen DIY Line Set - R-454B

Compatible Air Handlers

6K, 9K, & 12K 5th Gen DIY

Line Set Length

25 ft

Lineset Fitting Type

Quick-Connection

Gross Dimensions

32.09" D x 4.92" H x 32.09" W

Color

White

Color Family

Bronze/Copper Metallic

Refrigerant Type

R-454B

Refrigerant Volume (Oz)

2.12

Liquid Line Size

1/4

Suction Line Size

3/8

Registered Warranty

N/A

Has Batteries No

Contains Electronics

No

Contains Chemicals

Yes

Contains Aerosol

Yes

Contains Compressed Gas

Yes

Proposition 65 Warning

Yes

Restricted States

GU;PR;VI

Net Weight (Lbs)

10.4

Gross Weight (Lbs)

14.6


Frequently-Asked Questions

Do I need HVAC tools to install this line set?
No, the pre-charged Quick Connect design allows for DIY installation without special tools.

Is this line set compatible with all MRCOOL DIY systems?
No, it is specifically designed for the MRCOOL DIY 5th Gen 6K, 9K, and 12K indoor mini split air handlers.

Can I connect multiple line sets together?
Yes, MRCOOL offers coupler kits that allow line sets to be extended when necessary.

What refrigerant is this line set pre-charged with?
It comes pre-charged with eco-friendly R-454B refrigerant.

Why Choose Green Vista Living


At Green Vista Living, we’re passionate about providing top-quality renewable energy and eco-friendly products that not only enhance your life but also help protect the planet. We’ve built our business with one mission in mind: to be the go-to destination for renewable energy solutions, outdoor gear, and off-grid supplies. When you shop with us, you’re not just getting innovative products—you’re joining a community that’s committed to sustainability.

We Put Our Customers First


As a small, dedicated team, we care deeply about your experience. Unlike large, faceless online companies, Green Vista Living offers a personal touch in everything we do. We're here for you from start to finish—whether you need product advice, support after a purchase, or just have questions. Our knowledgeable customer service team is always just a phone call or email away, ready to assist you in any way possible.

We Share Your Passion for the Planet


Our love for the outdoors and sustainable living runs deep. Most of our team hails from the mountains of Colorado, where renewable energy and the environment are part of daily life. So when you call Green Vista Living, you’ll speak directly with an expert who understands both the technical side of renewable products and the lifestyle they support. Whether you’re looking for solar generators, EV chargers, or any of our eco-friendly offerings, you can trust us to guide you with expertise and passion.

Trusted Industry Experts


Our close partnerships with the best brands in renewable energy and outdoor gear give us insider knowledge that you won’t find anywhere else. We’ve taken the time to carefully select products that stand out for their quality and reliability. At Green Vista Living, we believe in understanding our products inside and out so that we can help you make the right choice with confidence.

More Reasons to Love Green Vista Living


Price Match Guarantee: Thanks to our partnerships, we offer the best prices around. If you find a better deal, we’ll refund the difference.


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Authorized Dealer: As an authorized dealer for all our brands, you’ll receive full manufacturer warranties with every order.


At Green Vista Living, we aim to make your renewable energy and outdoor experience as seamless and enjoyable as possible. With our unmatched customer service, expertise, and dedication to quality, you can shop with confidence, knowing you’re supporting a company that’s as committed to the planet as you are.

Frequently Asked Questions

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