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Build Your Own Data Centre

Maxi-Cool Gemini

Maxi-Cool Gemini split system server cabinet cooler

The Maxi-Cool Gemini is a split system server cabinet cooling solution designed for businesses that need powerful, flexible, close-control cooling for micro data centres and demanding server environments. Starting at 5kW and fully scalable, the Gemini allows you to build your own data centre on a modular basis — without the need for raised floors, cold- and hot-aisle containment, or a dedicated server room.

Using a split-system design, the Maxi-Cool Gemini features a remote condenser separate from the cabinet. Minimal waste heat is redirected entirely away from the working environment. The Maxi-Cool Gemini is particularly well-suited to larger installations, high-ambient-temperature environments, or situations where multiple cabinets need to be cooled together.

Designed, engineered and manufactured in the UK, the Maxi-Cool Gemini is supplied with a 12-month parts and labour warranty and has a typical four-week lead time. Service and maintenance contracts are available once the warranty period expires.

Performance

For businesses running multiple servers or building out a micro data centre, conventional air conditioning simply isn’t efficient enough. It cools the whole room rather than the equipment itself, wastes energy, and still leaves hot spots inside the cabinet that cause node crashes and hardware failures.

The Maxi-Cool Gemini solves this by cooling the rack directly. Every server intake receives cool air at precisely the right temperature, hot spots are completely eliminated, and the system uses significantly less energy than equivalent conventional air conditioning — reducing both your running costs and your carbon footprint.

Key features:

  • 5kW and above cooling capacity, making cooling scalable to your exact requirements
  • Cools the cabinet only, not the room, which can dramatically reduce energy waste
  • Suitable for environments where ambient air is unfiltered, dusty, or unsuitable for conventional systems
  • The remote condenser redirects all waste heat away from the working environment
  • Available in a travel case/flight case version for fully portable deployment
  • 12-month parts and labour warranty included as standard.

How Maxi-Cool Gemini Works

The Gemini operates as a closed-loop split system. Cool air is supplied directly to the intakes of all servers within the cabinet, eliminating hot spots from the outset. Air passes through the servers, absorbs heat, and is drawn through an evaporator inside the cabinet, where it is cooled back down and returned to the server intakes. The cycle is continuous. The coolant in the evaporator, now warmed by the absorbed heat, is passed via pipework to a remote external condenser. The condenser cools the refrigerant and returns it to the evaporator, ready to repeat the process. Because the condenser sits separately — in another room, outside the building, or in a dedicated plant area — all waste heat is redirected completely away from your working environment. The system is a fully closed loop throughout, meaning no dust, moisture, or unfiltered ambient air ever enters the cabinet. The Maxi-Cool Gemini is especially effective in factories, warehouses, production environments, and other locations where air quality is variable.

Key Benefits

Patented and proven Maxi-Cool Enclosure Cooling technology, engineered and manufactured in the UK.
Modular — Build Your Own Data Centre
Configure your micro data centre exactly as you need it. The Gemini's modular format means you can start with a single cabinet and expand over time as your data demands grow, without replacing your infrastructure.
Powerful Cooling From 5kW
With cooling capacity starting at 5kW and scalable upwards, the Gemini handles everything from small business server clusters to larger multi-cabinet micro data centre installations.
Fully Bespoke
Cabinet sizes, cooling capacities, security options, paint finishes, and corporate branding are all available to specification. Whatever your environment or industry, Maxi-Cool can configure a Gemini solution to match.
Portable — Available in a rugged Flight Case
The Gemini is available with quick-fit connections between the cabinet and condenser, making it fully transportable for sports, broadcast, events, military, or remote deployment use cases.
Greener Than Conventional Air Conditioning
The Gemini uses less energy than conventional air conditioning for equivalent cooling output. The units are recyclable at end of life — making it one of the most environmentally responsible server cooling choices available.
Low Running Costs
The Maxi-Cool Gemini delivers precision cooling by cooling cabinets rather than a whole server room and are cost effective.

FAQ's

Yes — because the Gemini requires no structural modifications and takes the form of a neat, professionally finished cabinet, it is well suited to listed buildings, serviced offices, and leasehold premises where building alterations are not permitted.
The Gemini is particularly effective in environments where conventional cooling is impractical — including factories, warehouses, production facilities, dusty or humid locations, and any site where ambient air quality is a concern. Its closed-loop design keeps the interior completely sealed from the surrounding environment.
The Gemini supports micro data centres for small to medium-sized installations. There is no need for hot and cold aisle containment or raised floors. Multiple units can be configured together as a modular row, scaling to your exact requirements.
The external condenser can be located in an adjacent room, a plant area, or outside the building — wherever is most practical for your site. This flexibility is one of the Gemini's key advantages over self-contained systems, as all waste heat is redirected completely away from your working environment.
Yes. The Gemini is available in a flight case / travel case version with rugged quick-fit connections, making it fully transportable. This version is popular for broadcast, events, defence, and remote deployment applications.
Yes. Maxi-Cool cabinets can be finished in any RAL colour and can incorporate your company logo in line with your brand guidelines.
All Gemini units are supplied with a 12-month parts and labour warranty. Service and maintenance contracts are available on expiry.
The Gemini is typically available with a four-week lead time. Contact our team to discuss your specific requirements and timescale.

Ready to build your own micro data centre?

The Maxi-Cool Gemini is trusted by businesses across the UK for flexible, powerful, and energy-efficient server cabinet cooling. Get in touch today, and our team will help you design the right configuration for your environment.
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Call us: 01733 873262
Download the Gemini Spec Sheet (PDF)