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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 designed for extended installations where more distance is needed between your 24K or 36K indoor mini split air handler and the outdoor condenser. Pre-charged with R-454B refrigerant and equipped with Quick Connect fittings, this line set eliminates the need for vacuuming, gauges, or professional HVAC tools. The included weatherproof DIY Pro Cable ensures consistent communication and power between units, making this the ideal accessory for MRCOOL DIY installers looking for a longer, more durable connection option.


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

Pre-Charged with R-454B – Factory-sealed with R-454B refrigerant, allowing for a seamless, no-hassle installation.

Quick Connect Fittings – Patented tool-free fittings ensure a leak-proof, fast connection with no need for refrigerant handling.

Built for Larger Units – Engineered specifically for MRCOOL DIY 24K and 36K indoor air handlers, with the correct line sizing for optimal performance.

Extended 35 Ft. Length – Offers increased flexibility for installations across longer distances, second stories, or detached structures.

DIY Pro Cable Included – Comes with a weather-resistant communication and power cable, streamlining the entire installation process.

Protective Insulation Jacket – Durable exterior jacket resists UV exposure and weather damage, ensuring longevity and reliable performance.


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

  • Second-story installs – Ideal for vertically-separated indoor and outdoor units

  • Garage or ADU applications – Great for detached spaces like shops or guest houses

  • Wider wall spans – Useful when air handler and condenser must be placed far apart

  • DIY replacements – Perfect for replacing or extending worn line sets in MRCOOL DIY systems

  • Medium-range residential setups – Supports efficient mid-distance installations with larger-capacity units


What’s Included?

  • 35 Ft. Line Set (3/8" x 5/8")

  • DIY Pro Communication and Power Cable

  • Pre-installed Quick Connect fittings


MRCOOL DIY 5th Gen 35 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

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 (Oz)

4.66

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)

18.3

Gross Weight (Lbs)

22.7


Frequently-Asked Questions

Is this line set compatible with smaller MRCOOL units?
No. This model is only compatible with MRCOOL DIY 24K and 36K air handlers and will not fit smaller systems due to its line size.

Does this line set include refrigerant?
Yes. It comes factory pre-charged with R-454B refrigerant and is sealed for ready-to-connect installation.

Can I shorten the line if needed?
No. The line set must be used at its full 35-foot length. Modifying it will void the sealed charge and compromise system performance.

Do I need to hire a professional to install it?
No. This is a DIY-friendly line set designed to be installed without HVAC tools. However, if you are unfamiliar with MRCOOL systems, a licensed HVAC technician may still be helpful.

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.

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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


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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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