Skip to product information
1 of 6


NV50-3834 MrCool HVAC Accessories Quick Connect HVAC Line Set, 50 Ft. 3/8" x 3/4"

Regular price $575.75 USD
Regular price Sale price $575.75 USD
Sale Sold out
Shipping calculated at checkout.

Benefits & Features

✅ Pre-Charged for 100% Accuracy: Ensures precise refrigerant levels.
✅ Kink Resistant: Facilitates easier bending during installation.
✅ No Vacuum Required: Simplifies the installation process.
✅ Leak-Proof: Ensures a secure and reliable connection.
✅ Strong Gator-Flextra UV Protective Insulation Sleeve: Provides durability and protection.
✅ Simple to Use Screw-on Quick Connect Valves: Streamlines the installation, saving 7 steps.

Product Specifications

Item Dimensions: 47" (D) x 5" (W) x 47" (H)
Item Color: Copper
Item Weight: 55 lbs

Refrigerant Pipe Connection Method: Quick-Connect
Refrigerant Pipe Length: 50-ft
Refrigerant Volume: 19.44-oz

Liquid Line Size: 3/8"
Liquid Line Fitting: 1"
Suction Line Size: 3/4"
Suction Line fitting: 1.5"

Has Batteries: No
Electronics: No
Chemicals: Yes
Aerosol: Yes
Compressed Gas:Yes
Proposition 65 Warning: Yes
Restricted States: GU;PR;VI
Certificate: cETLus Listed, Prop65

Manuals & Documentations

Install Manual,

Call Now For Free Shipping!

Discover a secret to savings! Our exclusive offer: free shipping on selected items ONLY. We're sharing the secret to unbeatable deals on select items, and it all begins with a simple connection.

Why Contact Us?
Our team curates a selection of products, and we're thrilled to share these gems with you. These aren't just any items; they're the ones that make the most of your hard-earned money. Get in touch with us to explore which treasures qualify for free shipping and start experiencing unparalleled value today.

How to Reach Us:
📞: (352) 432-8730

How We Ship Your Order

Order Confirmation: As soon as you place your order, you will receive an order confirmation email automatically. This confirms we received your order and pre-authorized your credit card.

We Process Your Order: We work in the background to match your order with the closest available inventory to you. We work with and confirm availability with our warehouse network, and we get a confirmation the order has shipped. This process typically takes 3-5 days but can be several weeks (if your item is made to order).

We Navigate & Keep You Informed: We make sure you receive your orders as smoothly as possible. If there are any challenges with stock availability, shipping times, shipping carrier cost changes, damages that occur during shipping, or anything else, we are here to help. We will reach out to you by email, sms or phone to make sure you are always informed.

We Provide Shipment Tracking: All orders will be shipped via small parcel or shipped via freight companies that specialize in larger products. As soon as your order has shipped, tracking information will be sent via email or sms. We aim to provide tracking within 3 days from the time when we receive the order from you.

Your Order is Delivered: Once your shipment arrives, inspect the packaging before accepting and signing for delivery whenever possible.

If anything does arrive damaged, take photos and reach out to us immediately. Keep everything together (do not discard packaging or shipping materials) and wait for instructions so your order can be returned and exchanged for an undamaged and working product.

What if I need to cancel?

  1. Cancellations of Made-to-Order Items: Once confirmed, an order for a made-to-order item may be considered final and partially (up to fully) non-refundable. 
  2. Cancellations of Available Items: If the item you ordered is available for shipping, it may ship within 24-48 hours of your order. If an item is already shipped, the order can not be canceled. We will help you return the item, but restocking fees may apply if canceled after shipping. Read the full policy.
  3. Cancellations of Preorders: If an item is not currently available, but we keep your order in place as a pre-order. You are welcome to cancel; however, please note that fees will apply as costs are incurred. 

The NV50-3834 is a 50-ft long line set with dimensions of 3/8" x 3/4". It is exclusively designed for use with MrCool universal condensers and air handlers. This set comes pre-charged from the factory with the exact amount of refrigerant required for the 2-3 ton MRCOOL Universal heat pump split system. Thanks to its specialized quick connect fittings, installation of the MrCool heat pump system is a breeze, requiring only a wrench - no need for a vacuum pump, gauges, flaring, or brazing.


  • MrCool — Universal Condensers & Air Handlers
  • Refrigerant — R-410A


  • 50 FT Pre-Charged (3/8" x 3/4") MrCool No-Vac Quick Connect Line Set

Also available in:

Warning: This product can expose you to chemicals including Lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm:

Frequently Asked Questions about the NV50-3834 MrCool HVAC Accessories Quick Connect HVAC Line Set, 50 Ft. 3/8" x 3/4"

What is an HVAC Lineset?

An HVAC Lineset is a pair of copper tubes that connect the indoor and outdoor components of a split system air conditioner or heat pump.

Why is it called a Lineset?

It's named Lineset because it consists of two lines – a liquid line that carries refrigerant from the outdoor unit to the indoor unit and a suction line that returns refrigerant from the indoor unit to the outdoor unit.

What is Quick-Connect, and why is it beneficial?

Quick-Connect is a feature that simplifies the connection process during installation, ensuring a secure and efficient fit.

What precautions should I take during installation?

Always follow safety guidelines and adhere to chemical warnings. Wear appropriate protective gear, and ensure proper ventilation when working with refrigerants.

How does the Lineset contribute to energy efficiency?

The kink-resistant and leak-proof design of the HVAC Lineset ensures optimal refrigerant flow, contributing to the overall energy efficiency of the HVAC system.