• Description
  • Why Buy From Us

The MRCOOL GeoCool No-Vac Vertical Downflow Line Set (3/8" x 3/4") is engineered for quick, efficient installation of geothermal HVAC systems. Designed for vertical downflow applications and precharged with eco-friendly refrigerant, it eliminates the need for vacuuming or charging on site. Perfect for simplifying complex installs, this line set offers reliable performance and compatibility with MRCOOL GeoCool systems.

MRCOOL GeoCool No-Vac Vertical Downflow without Air Box 3/8 3/4 Precharge Line Set Features

No-Vac Technology – Precharged line set eliminates the need for field vacuuming or charging, saving time and labor.
Vertical Downflow Design – Specifically designed for vertical installations without the air box, ideal for certain retrofit or tight-space projects.
Precharged Refrigerant – Comes factory prefilled with eco-friendly R410A refrigerant for hassle-free connection.
Heavy-Duty Construction – Built with durable, corrosion-resistant materials for long-term use in geothermal applications.
Leak-Free Quick Connects – Secure fittings ensure airtight performance and simplify system setup.

MRCOOL GeoCool No-Vac Vertical Downflow without Air Box Applications

  • Residential HVAC Systems – Ideal for geothermal systems in homes with vertical downflow setups.

  • Retrofitting Projects – Simplifies installations in older buildings where access or clearance is limited.

  • New Construction – Speeds up geothermal system installation in vertically configured systems.

  • Time-Sensitive Jobs – Great for contractors who need to reduce installation time and avoid on-site refrigerant work.

  • Service Replacements – Can be used for system repairs where the original line set needs to be replaced with minimal downtime.

What’s Included?

  • MRCOOL GeoCool No-Vac Vertical Downflow without Air Box 3/8 3/4 Precharge Line Set (GCNV-VD00-3834)

  • User Manual

MRCOOL GeoCool No-Vac Vertical Downflow without Air Box Specifications

Dimensions 57.7 in D x 12.55 in W x 3.9 in H
Refrigerant Type R410a
Liquid Line Size 3/8
Suction Line Size 3/4
Has Batteries No
Contains Electronics No
Contains Chemicals Yes
Contains Aerosol Yes
Contains Compressed Gas Yes
Proposition 65 Warning Yes

Frequently-Asked Questions

Is this line set compatible with all MRCOOL GeoCool models?
This line set is compatible with select GeoCool systems. Please confirm the match with the product model and orientation type before purchase.

Does this require refrigerant handling during installation?
No. The line set comes precharged and uses No-Vac quick connects to eliminate the need for on-site refrigerant handling.

Can it be used with other geothermal brands?
It's optimized for MRCOOL GeoCool systems. Use with other brands is not guaranteed and may void warranty.

Manual

  • GeoCool No-Vac Vertical Downflow without Air Box 3/8 3/4 Precharge Line Set Manual

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.

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