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Dependable ZoomLock MAX
Tool Kits & Fittings Distributor

Shop Zoomlock Max

Gustave A. Larson was established in 1936 with a single dream – becoming the most reputable wholesale distributor in the HVACR industry. We are now the leaders in the Midwest, Plains, and Mountain States. We take great pride in being a fully family-owned and operated business that provides our customers the chance to work with the best brands in the industry. That is why we bring you reliable ZoomLock MAX tool kits, jaw kits, and fittings. If you like to be at the forefront of refrigeration innovations, you should definitely consider partnering with Larson to provide ZoomLock MAX solutions to your customers.

High-quality ZoomLock MAX fittings

ZoomLock MAX is constantly trying to refine and ease installation with its press-to-connect refrigerant fittings. These ZoomLock MAX tool kits and fittings obliterate the need for fire spotters, flames, and brazing, which reduces the risks that accompany traditional HVACR installation. ZoomLock MAX technology allows contractors to quickly and efficiently connect the refrigerant lines, which boosts revenue while increasing reliability and safety. ZoomLock MAX is perfect for the installation of refrigeration, mini-splits, HP, and residential AC.

ZoomLock MAX provides innovative and reliable solutions for HVACR installation procedures that will ease your customer’s workload. These refrigerant fittings offer safer, cleaner, and faster connections that eliminate brazing and flames, which is the most modern method of connecting refrigerant lines during HVACR installation procedures. ZoomLock MAX continues to be at the forefront of HVACR installation, so partner with G.A. Larson, the leading ZoomLock MAX fittings distributor, and start offering your customers the latest word of technology.

Advantages of becoming a G. A. Larson partner

We stand out from the competition with our three business characteristics.

Making IT easy

G. A. Larson places the utmost importance in providing all our contractors with completely streamlined and hassle-free business interactions on our website, in our training room, and at our counter. We ensure quick and efficient business solutions that ensure smooth operation and maximum client satisfaction.


We offer a completely unique set of services to all our contractors, and that makes us stand apart from the competition. We have designed Larson Business Solutions with the aim of providing our clients with a professional and personalized approach that will help improve their business operations.


We are a completely family operated and owned business, and have been so since day one. It is those family values that we incorporate into the way we handle business. We give all our business interactions a personal touch, and we’re always looking for new partners to welcome into the family.


Would you like to buy ZoomLock MAX tool kits and fittings?
You can do so in the following locations:

  • Colorado
  • Idaho
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Michigan
  • Minnesota
  • Nebraska
  • Nevada
  • New Mexico
  • North Dakota
  • South Dakota
  • Utah
  • Wisconsin
  • Wyoming

Select cutting-edge ZoomLock MAX tool kits and fittings

When you decide to become a provider of ZoomLock MAX fittings and tool kits, you will be able to provide your customers with the most modern HVACR installation solutions available on the market today. ZoomLock MAX enables HVACR technicians to perform faster, safer, and more efficient installations which will help advance their business.
Gustave A. Larson is here to help you become a proud ZoomLock MAX contractor and we want you to start offering your clients the finest cutting-edge solutions. Reach out to us and let’s start working together.

Explore the benefits of ZoomLock MAX fittings and tool kits

Becoming a ZoomLock MAX contractor means that you will be able to offer your customers the following advantages:

  • Low installation costs
  • Improved productivity
  • Higher flexibility
  • Electrical continuity
  • No nitrogen purge
  • Completely flame-free installation
  • Compact and light tooling
  • Permanent and reliable connections
  • High-quality O-rings
  • Excellent technical support

Interested in becoming a partner?

Shop Zoomlock Max

Frequently Asked Questions

  • What is included in ZoomLock MAX tool kits?

    ZoomLock MAX tool kits for sale come in three different variants – the PZK-TKO, the PZK-TK3, and the PZK-TK5. Each of these different tool kits come with a permanent marker, a crim gauge, an abrasive pad, stainless brush, tube deburring tool, tubing clutter, a battery charger, two Lithium-ion batteries, and a crimping tool.

    Additionally, the PZK-TK3 tool kit includes ⅞”, ⅜”, and ½” jaws, while the PZK-TK5 tool kit includes ⅞”, ⅝”, ½”, ⅜”, as well as a ⅛” jaw. These kits possess everything a technician should need to perform adequate installation.

  • What is the warranty on ZoomLock MAX fittings?

    All ZoomLock MAX fittings have a long, 10-year warranty period that begins on the day of purchase. A long warranty period is one of the ways that a contractor of ZoomLock MAX products would be able to explain to their customers just how premium ZoomLock MAX tool kits and fittings are.

    If you’d like to start offering your customers high-quality ZoomLock MAX products and tools, contact G. A. Larson via our website or at one of our branch locations and we’ll take care of the rest.

  • What refrigerants are approved for use with ZoomLock MAX?

    ZoomLock MAX is a premium tool kit that possesses quality fittings approved for use with a variety of different refrigerants. The following is the list of all the refrigerants that ZoomLock MAX is approved for:

    • R-422D
    • R-417A
    • R-438A
    • R-427A
    • R-407A
    • R-449A
    • R-448A
    • R-513A
    • R-450A
    • R-718
    • R1234yf
    • R1234ze
    • R-507
    • R-410A
    • R-407F
    • R-407C
  • How do ZoomLock MAX fittings cope with vibration from the system?

    Vibrations are one of the most common causes of leaks. However, ZoomLock MAX fittings are designed to minimize vibrations when installed in compliance with all the proscribed codes of practice and standards.

    ZoomLock MAX fittings have been extensively tested and they ensure that joints do not start to leak due to vibrations. All ZoomLock MAX fittings comply with the following standards: Fatigue Shock Test, ISO 14903, UL 109 - -8, Vibration Test; UL 2074, Temperature Pressure Cycling and Vibration Test. These standards secure maximum vibration resistance of all ZoomLock MAX fittings.

  • Who is the leading ZoomLock MAX tool kit & fitting distributor in America?

    G.A. Larson is here to offer you a wide array of premium commercial and residential refrigeration solutions, including cutting-edge ZoomLock MAX tool kits and fittings. If you’d like to become a ZoomLock MAX equipment and parts contractor, contact Gustave A. Larson today either via our website, or in-person at one of our branch locations.

    Additionally, we are here for you if you’re looking to partner with the most reputable wholesale distributor of Emerson Refrigeration parts and equipment, and we can also provide you a selection of dependable Rheem HVAC systems. Partner with Gustave A. Larson, and we’ll help you boost your business. Contact us today!