NVCOUPLER-3834 MrCool HVAC Accessories 3/8" + 3/4 No-Vac Coupler Double Male End H2" x W6" Air Coupler

Regular price $74.00 USD
Regular price Sale price $74.00 USD
Sale Sold out
Shipping calculated at checkout.

Benefits & Features

✅ Extended Reach: Effortlessly extend the MRCOOL Universal Quick Connect Pre-Charged Line Set beyond standard lengths.
✅ Tailored Installations: Facilitates customization for precise installations, eliminating the need for traditional line sets and time-consuming techniques.

Product Specifications

Item Weight: 1.35 lbs
Item Color: Copper

Lineset Fitting Type: Double Male End Coupling

Batteries: No
Electronics: No
Chemicals: No
Aerosol: No
Compressed Gas: No
Proposition 65 Warning: Yes
Restricted States: GU;PR;VI

Manuals & Documentations


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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. 

Elevate your HVAC setup with MrCool's Double Male End Air Coupler – a top choice for HVAC professionals and enthusiasts alike. Expertly crafted with a copper-colored finish, this coupler combines both a 3/8" and a 3/4" no-vac coupler, ensuring efficient high-flow rate connections across various applications. The bold no-vac design guarantees safety from vacuum pressure, making it indispensable for HVAC projects in healthcare, hospitality, retail, public buildings, and beyond. HVAC Delivered assures quality, efficiency, and personalized service with this essential HVAC accessory.


  • MrCool — Universal Quick Connect Pre-Charged Line Set
  • MrCool — Universal Series heat pump systems
  • NOT compatible with the MRCOOL DIY


  • (1) 3/8" coupler
  • (1) 3/4" coupler (both double male end)

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 NVCOUPLER-3834 MrCool HVAC Accessories 3/8" + 3/4 No-Vac Coupler Double Male End H2" x W6" Air Coupler

What is an air coupler in HVAC systems?

An air coupler in HVAC systems is a connecting device that joins two hoses or pipes, ensuring a secure and efficient airflow between different components.

Why is a double male end air coupler beneficial?

A double male end air coupler provides versatility by allowing connections at both ends, facilitating extended lengths or connections with other HVAC components.

Is the copper color of the air coupler just for aesthetics?

No, the copper color signifies the material, and in this case, it is a copper-colored coupler. The color does not affect its functionality but adds durability.

How does the no-vac design enhance safety?

The no-vac design ensures safety by preventing vacuum pressure, reducing the risk of air or contaminants entering the HVAC system during disconnection.

What benefits does the double male end coupler provide in HVAC installations?

The double male end coupler provides flexibility, enabling connections with various HVAC components and meeting specific installation needs without relying on traditional line sets.