MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler
MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler
MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler
MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler

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MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler

GeoCool

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler

$799.00 $510.00
MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler
MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler
MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler
MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler

GeoCool

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 1/2", for DIY 18K Mini Split Indoor Air Handler

$799.00 $510.00
  • Description
  • Why Buy From Us

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set

The MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable is a smart, efficient solution for extending your MRCOOL DIY 18K Mini Split system. Designed with convenience in mind, this line set is pre-charged with R-454B refrigerant and features Quick Connect fittings, eliminating the need for vacuuming or charging. The 35-foot length provides flexibility for installations in multi-level homes, detached structures, or wider layouts, and the included DIY Pro Cable ensures seamless communication and power between units.

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set Features

Pre-Charged with R-454B – Line set is factory-filled and sealed with environmentally friendly R-454B refrigerant for simplified installation.

Quick Connect Fittings – Uses tool-free, leak-proof connections that eliminate the need for HVAC tools or professional vacuuming.

35 Ft. Line Set Length – Perfect for medium-distance installations, including second-floor units, garages, or expanded home layouts.

Sized for 18K BTU Systems – Specifically built to pair with MRCOOL DIY 5th Gen 18K air handlers, ensuring ideal refrigerant flow and system compatibility.

Includes DIY Pro Cable – Comes with a weather-resistant communication and power cable, pre-matched to MRCOOL system standards.

Durable Outer Jacket – Features UV-resistant and weatherproof insulation to protect against environmental wear and damage.

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set Applications

  • Multi-level homes – Great for connecting units across floors or in elevated positions

  • Detached buildings – Ideal for garages, workshops, or studios separate from the main structure

  • Wider room layouts – Useful in larger rooms or setups requiring extended reach

  • Retrofit installs – Replaces existing line sets in older systems with a pre-charged, quick-fit solution

  • DIY-friendly setups – Made for MRCOOL customers seeking a tool-free installation experience

What’s Included?

  • 35 Ft. Line Set (1/4" x 1/2")

  • DIY Pro Communication and Power Cable

  • Quick Connect fittings (pre-installed)

  • Setup and safety instructions

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set Specifications

Series

5th Gen DIY Line Set - R-454B

Compatible Air Handlers

18K 5th Gen DIY

Line Set Length

35 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 

3.46

Liquid Line Size

1/4

Suction Line Size

1/2

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)

18.3

Gross Weight (Lbs)

22.7

Frequently-Asked Questions

Is this line set compatible with 12K or 9K air handlers?
No. This specific line set is optimized for MRCOOL 18K 5th Gen systems only due to the 1/2" suction line size required for proper performance.

Does it come with refrigerant already inside?
Yes. The line set is pre-charged with R-454B refrigerant, sealed from the factory for immediate use.

Can I cut this line set to a shorter length?
No. The line set is designed to be used at its full 35-foot length. Cutting or modifying it will void the sealed system and compromise performance.

Is this safe for first-time DIY users?
Yes. MRCOOL Quick Connect systems are designed for user-friendly installation, though reviewing the manual or working with an HVAC professional if unsure is always a good idea.

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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