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MRCOOL 3/8 No-Vac Coupler + 3/4 No-Vac Coupler for Central Ducted and Universal Series, NVCOUPLER-3834

SKU NVCOUPLER-3834
by MRCOOL
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Description

MRCOOL 3/8" Flare-to-Weld Fitting (WF-38)

Versatile Connections for Reliable HVAC Installs

The MRCOOL 3/8" Flare-to-Weld Fitting is engineered for HVAC professionals who demand flexibility and dependable performance on every job. Featuring a flared female end to a female weld end, this copper fitting is ideal for transitioning between flare and weld connections in refrigerant line set installations and repairs.


Key Features
  • 3/8" Flare-to-Weld fitting for seamless line set transitions
  • Durable copper construction for corrosion resistance and longevity
  • Flared female end to female weld end for versatile installation options
  • Compatible with MRCOOL line sets and standard HVAC tubing
  • Color: Bronze/Copper Metallic

Product Specifications
  • Dimensions: 4.5"W x 32"D x 4.5"H
  • Equipment Type: Flare-to-Weld Fitting
  • Material: Copper
  • Proposition 65 Warning: Yes
  • Restricted States: GU; PR; VI

Ensure Secure Connections—Trust MRCOOL Flare-to-Weld Fittings

Boost your installation flexibility and guarantee leak-free, professional results with the MRCOOL 3/8" Flare-to-Weld Fitting. The choice for HVAC pros who want reliability every time.

.

PRODUCT SPECIFICATIONS:

Product Dimensions 6"W x 4.5"D x 2"H
Product Weight 6
Equipment Type Coupler
Color Copper
Color Family Bronze/Copper Metallic
Lineset Fitting Type Double male end coupling
Registered Warranty N/A
Proposition 65 Warning Yes
Restricted States GU;PR;VI
Shipping and Return

We offer Free Express Shipping on all of our products. Handling times are 1-2 business days and Delivery takes roughly 3-14 Business days 

For more Shipping information visit here

We offer a 2 Year (730 Day) return for our products. 

For more Return information visit here

COVERAGE AREA

HIVE WARRANTY

HVAC Hive Warranty Information:

HVAC Hive is an authorized dealer for every product on our website. Every HVAC system and component comes with its original manufacturer's warranty, guaranteeing you receive a functional, quality product.

Our 5-Year Parts & Labor Warranty Promise: We go beyond the standard coverage. If a manufacturer's warranty doesn't cover your product for a full 5 years, HVAC Hive will extend both parts and labor warranty to complete the 5-year coverage period.

Example: If your manufacturer covers 2 years parts & labor, we'll cover an additional 3 years — giving you a full 5 years of parts and labor protection.

Warranty Coverage Includes:

  • Parts replacement for manufacturing defects
  • Labor costs for covered repairs
  • System malfunctions and component failures

Warranty Details:

  • Residential, light commercial, and full commercial warranties vary based on your usage
  • Specific warranty terms and coverage periods are listed on each product page
  • Both parts and labor are covered under our extended warranty program

Making a Warranty Claim: Contact our Worker Bee Support team at 1-888-712-2465 or karim@hvachive.com . We'll handle your claim quickly and professionally, covering both parts and labor costs. You can also contact the manufacturer directly if preferred.

Questions? Need help understanding your parts & labor warranty coverage? Our team is here to explain the details and ensure you're fully protected.

Contact US
Request an Installer

Product Overview

  • Zone / ROOM:

    Zone / ROOM:

  • Air Handler BTU:

    Air Handler BTU:

  • Condenser BTU:

    Condenser BTU:

  • Outdoor Operating Temp (Cool/ heat):

    Outdoor Operating Temp (Cool/ heat):

  • Warranty

    Warranty

Description

MRCOOL 3/8" Flare-to-Weld Fitting (WF-38)

Versatile Connections for Reliable HVAC Installs

The MRCOOL 3/8" Flare-to-Weld Fitting is engineered for HVAC professionals who demand flexibility and dependable performance on every job. Featuring a flared female end to a female weld end, this copper fitting is ideal for transitioning between flare and weld connections in refrigerant line set installations and repairs.


Key Features
  • 3/8" Flare-to-Weld fitting for seamless line set transitions
  • Durable copper construction for corrosion resistance and longevity
  • Flared female end to female weld end for versatile installation options
  • Compatible with MRCOOL line sets and standard HVAC tubing
  • Color: Bronze/Copper Metallic

Product Specifications
  • Dimensions: 4.5"W x 32"D x 4.5"H
  • Equipment Type: Flare-to-Weld Fitting
  • Material: Copper
  • Proposition 65 Warning: Yes
  • Restricted States: GU; PR; VI

Ensure Secure Connections—Trust MRCOOL Flare-to-Weld Fittings

Boost your installation flexibility and guarantee leak-free, professional results with the MRCOOL 3/8" Flare-to-Weld Fitting. The choice for HVAC pros who want reliability every time.

.

PRODUCT SPECIFICATIONS:

Product Dimensions 6"W x 4.5"D x 2"H
Product Weight 6
Equipment Type Coupler
Color Copper
Color Family Bronze/Copper Metallic
Lineset Fitting Type Double male end coupling
Registered Warranty N/A
Proposition 65 Warning Yes
Restricted States GU;PR;VI
Shipping and Return

We offer Free Express Shipping on all of our products. Handling times are 1-2 business days and Delivery takes roughly 3-14 Business days 

For more Shipping information visit here

We offer a 2 Year (730 Day) return for our products. 

For more Return information visit here

COVERAGE AREA

HIVE WARRANTY

HVAC Hive Warranty Information:

HVAC Hive is an authorized dealer for every product on our website. Every HVAC system and component comes with its original manufacturer's warranty, guaranteeing you receive a functional, quality product.

Our 5-Year Parts & Labor Warranty Promise: We go beyond the standard coverage. If a manufacturer's warranty doesn't cover your product for a full 5 years, HVAC Hive will extend both parts and labor warranty to complete the 5-year coverage period.

Example: If your manufacturer covers 2 years parts & labor, we'll cover an additional 3 years — giving you a full 5 years of parts and labor protection.

Warranty Coverage Includes:

  • Parts replacement for manufacturing defects
  • Labor costs for covered repairs
  • System malfunctions and component failures

Warranty Details:

  • Residential, light commercial, and full commercial warranties vary based on your usage
  • Specific warranty terms and coverage periods are listed on each product page
  • Both parts and labor are covered under our extended warranty program

Making a Warranty Claim: Contact our Worker Bee Support team at 1-888-712-2465 or karim@hvachive.com . We'll handle your claim quickly and professionally, covering both parts and labor costs. You can also contact the manufacturer directly if preferred.

Questions? Need help understanding your parts & labor warranty coverage? Our team is here to explain the details and ensure you're fully protected.

Contact US

Commercial HVAC PROS!

Unlock Installer Benefits Now:

  • ✓ Exclusive BULK Pricing
  • ✓ Limited Time Deals
  • ✓ Unmatched Service & Support
  • ✓ Technical support
  • ✓ Extended Warranty & Maintenance
"Their technical expertise in commercial HVAC systems is outstanding. From equipment selection to installation support, they provided everything we needed. The bulk pricing saved us thousands on our multi-building project, and their 24/7 technical support kept us running smoothly."
- Marcus R., HVAC Project Manager, 06/24

You'll hear from us during business hours

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Need Professional Installation?

Get Connected with Certified HVAC Installers:

  • ✓ Pre-Vetted, Licensed & Insured Installers
  • ✓ 2-3 Local Options in Your Area
  • ✓ Specialists in Your Equipment Type
  • ✓ Competitive, Transparent Pricing
  • ✓ Fast Response - Within 24 Hours

How it works:

1. Fill out the form below with your project details
2. We'll match you with 2-3 qualified installers in your area
3. Installers contact you directly with quotes and availability
4. You choose the best fit for your project

"I bought a heat pump online but wasn't sure about installation. HVAC Hive connected me with three local contractors within hours. I chose one based on reviews and pricing - he installed it perfectly the next week. Made the whole process so much easier!"
- Jennifer M., Homeowner, Phoenix AZ

✓ No obligation quotes | ✓ All installers background checked | ✓ Free service - you only pay the installer

We'll connect you with installers within 48 hours during business days

Frequently Asked Questions about MRCOOL 3/8 No-Vac Coupler + 3/4 No-Vac Coupler for Central Ducted and Universal Series, NVCOUPLER-3834

Most Frequently Asked Questions

The purpose of the MRCOOL NVCOUPLER-3834 No-Vac Couplers is to securely connect two pre-charged MRCOOL No-Vac Quick Connect line sets together, allowing for extended total line set length without losing refrigerant or requiring vacuuming or field charging.
Yes, the 3/8" and 3/4" MRCOOL NVCOUPLER-3834 No-Vac Couplers are compatible with MRCOOL Central Ducted and Universal Series No-Vac Quick Connect line sets.
No-Vac Couplers simplify the installation or extension of line sets by allowing two pre-charged MRCOOL No-Vac Quick Connect line sets to be securely joined without the need for vacuuming, refrigerant charging, or special tools, maintaining a sealed, leak-free connection.

Other Questions

No, MRCOOL No-Vac Couplers are specifically designed for MRCOOL No-Vac Quick Connect line sets and are not compatible with line sets from other manufacturers.
No, MRCOOL No-Vac Couplers do not require special tools or procedures for installation; they are designed for simple, tool-free, and leak-free connection of compatible MRCOOL No-Vac Quick Connect line sets.

Reviews

Express Free Shipping

Process orders within 1-2 days

Stress Free Returns

Get Covered for (730 days) Returns

Premum Quality

Top Tier Products, Even Better Customer Care

5 Year Warranty

We Believe In Our Products & Our Team