Natural freshness, with you everywhere!
The passive coolers from Petromax are your key to independent cooling in the wilderness. Whether you use standard ice cubes, ice packs or dry ice - your food and drinks will stay pleasantly cool for up to 12 days. Natural cooling performance, far away from electricity or generators.
Dive into our assortment and create your individual cooler now!
Petromax Passive Coolers: Maximum freshness for your adventure
Robust construction for every outdoor excursion
The impressive quality of Petromax kx-series coolers is not only evident in their solid construction and impressive cooling performance, but is further underscored by positive product reviews. The rugged construction ensures that your cooler will remain stable and durable even under the most demanding conditions. Whether you're planning short trips or longer explorations, your cooler will keep ice at the ideal temperature for up to 12 days when used correctly.
Functionality well thought out
Petromax coolers are designed specifically for adverse conditions. Every detail has been designed with thoughtful sophistication to give you maximum performance in any situation. Tie-down points ensure safe transport, while rubber feet not only guarantee stability but also allow effective air circulation. The ergonomically designed carrying handles not only make transport easier, but also serve as clever strap guides. The resilient design even allows the cooler to be used as a comfortable stand or seat.
Long lasting freshness
Petromax passive coolers combine advanced technology with thoughtful design. The double-walled body made of durable polyethylene protects your supplies from external influences. The insulating layer, consisting of pressure-induced PU foam, ensures a constant temperature and preserves the freshness of your food.
Sustainability and performance in harmony
The coolers not only impress with their impressive performance, but also with their environmentally conscious design. The combination of double-wall cavity insulation and high-performance insulating foam ensures outstanding insulation performance. This allows your supplies to stay fresher for longer, while the cooler's generous interior provides ample space for all your adventures.
The future of camping relies on powerless cooling that combines sustainability, performance and independence. Petromax Passive Coolers embody all of these qualities, allowing you to enjoy your adventures to the fullest. No compromises, no dependence on electricity - just reliable cooling, no matter where your journey takes you.
Which Cool Box is the best?
A good Cool Box should provide you with years of loyal service. You should, therefore, consider carefully which Cool Box you buy, for the choice is wide and ranges from cheap compromises to premium products. We help you find the best Cool Box for you.
Here are three tips for you:
- Which Cool Box is best depends entirely on what you want to do and the type of cooling system you need for your adventure. If you value a self-sufficient and energy-independent cooling option, then a passive cooling system is the right choice for you. The Petromax kx Cool Box series has achieved impressive results in numerous product tests, especially in the categories stability and cooling duration of ice. If you follow the instructions, you can keep ice cold in a Petromax Cool Box for up to 12 days.
- However, it is not just the way the cooling system works that matters, it is also how adaptable it is to your needs. Petromax Cool Boxes are available in three colours with a volume of 25 l, 50 l or 75 l We also offer plenty of accessories for Petromax Cool Boxes, allowing you to put together your own individual passive cooling system.
- In addition to cooling, transportability and additional features are also important. Petromax Cool Boxes are equipped with lashing points so you can be sure that they will be a quiet companion even on bumpy rides. Four rubber feet on the bottom of the Cool Box ensure a firm stand and allow air circulation from below. Ergonomic carrying handles on the sides ease transport and can also be used as belt guides. What is more, the Cool Boxes are so robustly built that you can easily use them as a platform if you ever want to get a better view. They also work well as a resting place and together with an Adhesive Pad or Seat Cushion offer a non-slip and comfortable sitting position. In addition, thanks to their clear-edged design, the Cool Boxes stack well and can be stowed in the hold or below deck. You can combine the reinforced locking plates with a standard U-lock to secure your provisions even better. A Lock Bracket is also available for the Cool Box, which prevents your Cool Box from being stolen.
Cool Box criteria
Petromax Cool Boxes
• Self-sufficient, environmentally friendly
• Ice, dry ice and cold packs
• Up to 12 days
• Single-handed operation thanks to non-slip rubber fasteners
Cool Box accessories and combinations:
• Adhesive Pad, Seat Cushion, Lock Bracket, Locking Plate with Bottle Opener, Dry Rack Baskets
• Can also be used as a seating and standing surface thanks to its robust design
How does our Cool Boxes work without electricity?
A non-electric cooling alternative is environmentally friendly and often underestimated in terms of cooling intensity and duration. We show you how the Petromax Passive Cool Box works and why you can rely on it.
A Passive Cool Box is used with ice, cold packs or dry ice. This type of cooling system ensures the preservation of your food and beverages – without external energy, operating noise and failure-prone electrics.
Essentially, there are two important considerations: Design and insulation layer. As with a house, it makes a difference whether the walls are narrow or thick and whether they have thin or thick insulation. The right ratio ensures that the temperature inside is as stable as possible over time. This is exactly where the design of the ultra-passive Petromax Cool Box comes in:
The body of the Petromax Cool Box is made of robust polyethylene. All components are double-walled, cast in one piece and feature a uniform wall thickness. The heart of kx Cool Boxes is the insulating layer. The pressure-induced PU foam penetrates every cavity, no matter how small, and together with the double-walled body forms the effective cold wall.
The high-performance insulating foam has a low thermal conductivity and an impressive thickness of at least 45 mm. This helps the Petromax Cool Box to keep ice chilled for up to 12 days and the inside temperature constant for days. With this strong helper you are well-equipped for independent cooling.
Here are a few tips on how to use your Petromax Cool Box:
- Cool down the Cool Box in a cold room (e.g. cellar) or with ice before use.
- Only fill with pre-cooled drinks and food.
- Use large blocks of ice if possible.
- Always place dry ice (follow manufacturer's instructions), cold packs or ice on top. Remember that cold sinks to the bottom.
- Only open box if really necessary.
- When travelling, store the box in a cool, shady place and avoid direct sunlight.
- Store and transport upright.
How big should your Petromax Cool Box be?
How much you can actually fit into a Cool Box depends very much on what food and drinks you want to store. The volume data thus serves as initial guidance. To give you a better idea of the capacity of our Cool Boxes, we also give the casn-ice and bottle-ice ratios. This information serves as rough guidance only.
With a passive cooling system, you should always allow enough space for the coolant. This varies depending on the choice of coolant.
The Petromax Cool Box has a significantly larger outer dimension compared to the filling capacity. This is due to the double-walled cavity insulation. This is necessary so that your chilled food and beverages remain surrounded by low temperatures for a long time. This is also an important consideration when choosing the right Cool Box size.
Basically, the same principle applies when choosing the right Cool Box size as when choosing the right Dutch Oven size: More volume offers more possibilities. If in doubt, go for the next size up, because you will either fill up unused space with ice and increase your cooling time, or you will have extra space if your next adventure turns into a longer one.