MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 3/8" x 5/8", for DIY 24K & 36K Indoor Mini Split Air Handler
MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 3/8" x 5/8", for DIY 24K & 36K Indoor Mini Split Air Handler
MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 3/8" x 5/8", for DIY 24K & 36K Indoor Mini Split Air Handler

MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 3/8" x 5/8", for DIY 24K & 36K Indoor Mini Split Air Handler

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MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 3/8" x 5/8", for DIY 24K & 36K Indoor Mini Split Air Handler

GeoCool

MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 3/8" x 5/8", for DIY 24K & 36K Indoor Mini Split Air Handler

$849.00 $457.00
MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 3/8" x 5/8", for DIY 24K & 36K Indoor Mini Split Air Handler
MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 3/8" x 5/8", for DIY 24K & 36K Indoor Mini Split Air Handler
MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 3/8" x 5/8", for DIY 24K & 36K Indoor Mini Split Air Handler

GeoCool

MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set, 3/8" x 5/8", for DIY 24K & 36K Indoor Mini Split Air Handler

$849.00 $457.00
  • Description
  • Why Buy From Us

MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set

The MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set offers a reliable, efficient, and user-friendly way to extend or replace the connection between your MRCOOL 24K or 36K BTU indoor mini split air handler and outdoor unit. Pre-charged with R-454B refrigerant, this line set simplifies the installation process by eliminating the need for refrigerant handling or vacuum pumps. It features Quick Connect fittings for tool-free connection and is the perfect choice for shorter-distance installs where 25 feet is just right for a clean, professional finish.

MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set Features

Pre-Charged with R-454B – Comes prefilled and sealed with R-454B refrigerant, ensuring efficiency and reducing install time.

Quick Connect Technology – Uses MRCOOL’s proprietary tool-free fittings for secure, no-vacuum, leak-resistant connections.

Built for Larger Units – Designed for use with 24K and 36K 5th Gen MRCOOL indoor air handlers, delivering the proper refrigerant flow and performance.

25 Ft. Line Set Length – Perfect for installs with moderate distance between air handler and condenser, such as along exterior walls or mid-sized rooms.

Heavy-Duty Construction – Insulated and protected with a UV- and weather-resistant jacket for long-term durability in all climates.

No Special Tools Needed – Ideal for homeowners or installers looking for a simple, clean, and efficient installation solution.

MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set Applications

  • Short-to-moderate installs – Ideal when the distance between indoor and outdoor units is around 25 feet

  • Garage or workshop systems – Suitable for connecting to larger units in enclosed secondary structures

  • First-floor installations – Works well for horizontally aligned indoor/outdoor units in larger rooms

  • Mini split system upgrades – Perfect for replacing damaged or aged line sets with a factory-charged option

  • Accessory for 24K & 36K air handlers – Built to support the capacity and dimensions of larger MRCOOL DIY systems

What’s Included?

  • 25 Ft. Line Set (3/8" x 5/8")

  • Pre-installed Quick Connect fittings

MRCOOL DIY 5th Gen 25 Ft. Pre-Charged Quick Connect Line Set Specifications

Series

5th Gen DIY Line Set - R-454B

Compatible Air Handlers

24K & 36K 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

3/8

Suction Line Size

5/8

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)

14.1

Gross Weight (Lbs)

18.5

Frequently-Asked Questions

Is this compatible with smaller MRCOOL units like 12K or 9K?
No. This line set is designed specifically for 24K and 36K 5th Gen MRCOOL DIY air handlers, which require 3/8" x 5/8" line sizes for correct operation.

Does it come with refrigerant already inside?
Yes. It is factory pre-charged with R-454B refrigerant, sealed and ready for use out of the box with compatible units.

Can I shorten or cut this line set to fit a tighter space?
No. This line set must be used at full length as designed. Altering it would compromise the refrigerant seal and system performance.

Do I need an HVAC professional to install it?
While it is DIY-friendly, users unfamiliar with HVAC work are encouraged to seek help from a professional for proper and safe installation.

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.


Free Shipping: We offer free shipping on most orders to the lower 48 U.S. states, making your shopping experience even easier.


100% Secure Ordering: Our site uses SSL Encryption technology to keep your payment and personal information safe and secure.


Volume Discounts: For large orders, we’re happy to provide special pricing—just reach out for a custom quote.


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

Yes! We provide free and fast shipping on MOST orders within the continental United States. However, some specific brands and items will require a quote. You can live chat or call us for a quote
Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-743-829 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.

Let customers speak for us

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