Kontrol Refill Moisture Krystals (2.5KG Scent Free) image 1 Kontrol Refill Moisture Krystals (2.5KG Scent Free) image 2 Kontrol Refill Moisture Krystals (2.5KG Scent Free) image 3 Kontrol Refill Moisture Krystals (2.5KG Scent Free) image 4

Kontrol Refill Moisture Krystals (2.5KG Scent Free)

£6.91(inc VAT) £7.99
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  Product Description
Kontrol Refill Moisture Krystals are calcium chloride crystals designed to absorb excess moisture in caravans, motorhomes, campervans and storage spaces. Each 2.5kg bag absorbs up to five litres of water from the air, providing extended moisture control for larger vehicles or longer storage periods. The scent-free formula works silently without needing electricity or batteries, making it ideal for vehicles in storage or off-grid camping situations where power isn't available.

These refill crystals fit Kontrol's larger moisture trap systems, which collect the absorbed moisture as liquid in a separate container. The hygroscopic properties of calcium chloride mean the crystals actively pull moisture from the surrounding air, helping prevent condensation on windows, damp patches on soft furnishings, and the musty smells that develop in closed-up vehicles. Caravanners and motorhomers typically use the 2.5kg size for larger motorhomes, twin-axle caravans, or when storing vehicles over extended winter periods where regular maintenance isn't practical.

The resealable bag design lets you top up your moisture trap as needed rather than using the full 2.5kg at once. While the crystals work well in most conditions, they'll saturate faster in very damp environments like coastal areas or if there's an existing moisture problem from leaks. The system requires you to empty the collected liquid regularly and dispose of it safely, as the calcium chloride solution shouldn't be poured onto plants or metal surfaces.

Kontrol Refill Moisture Krystals (2.5KG Scent Free) Features


  • 2.5kg resealable bag
  • Attracts and removes moisture from the air
  • Helps prevent damp, mould and mildew
  • Absorbs up to two litres of moisture
  • Effective for six to eight weeks
  • For use with Streamline and Mega Moisture traps
  • Scent free

Frequently Asked Questions

How long do 2.5kg Kontrol Moisture Krystals last in a caravan?
The 2.5kg bag provides extended moisture control, typically lasting several months in average conditions before the crystals fully saturate. Duration depends on ambient humidity levels and the size of the space being protected. In larger motorhomes or twin-axle caravans, the increased crystal quantity handles higher moisture loads while maintaining effective protection throughout winter storage periods.
Which moisture traps work with 2.5kg Kontrol refill crystals?
The 2.5kg refill size suits larger Kontrol moisture trap systems designed for bigger vehicles and extended use. These larger traps feature increased collection container capacity to handle the greater volume of absorbed moisture. The crystals sit in the upper compartment while collected liquid accumulates below, requiring less frequent emptying compared to smaller capacity systems.
How much moisture can 2.5kg of Kontrol Krystals absorb?
Each 2.5kg bag absorbs approximately five litres of moisture from the air before reaching saturation point. The calcium chloride crystals gradually turn into liquid as they pull moisture from the surrounding environment. This larger capacity makes the 2.5kg size suitable for bigger vehicles, very damp conditions, or extended storage periods where regular maintenance isn't feasible.
Why choose 2.5kg Kontrol Krystals over smaller refill sizes?
The 2.5kg size offers better value and convenience for larger vehicles or extended storage periods. Motorhome owners and those with twin-axle caravans benefit from the increased capacity, which handles higher moisture loads without needing frequent refills. The larger quantity also suits situations where you can't regularly check and maintain the moisture trap, such as winter storage at remote sites.
Do 2.5kg Kontrol Moisture Krystals need electricity to work?
Kontrol Krystals work through passive absorption without requiring electricity, batteries or any power source regardless of pack size. The calcium chloride crystals naturally attract moisture through hygroscopic properties, making them ideal for caravans and motorhomes in storage where power isn't available. This silent operation also means no running costs beyond replacing the crystals when saturated.
Can you use 2.5kg Kontrol Krystals in multiple smaller traps?
The resealable bag design lets you distribute the 2.5kg quantity across multiple moisture traps throughout your vehicle if needed. Many motorhome owners place separate traps in the bedroom, bathroom, living area and storage compartments, refilling each from the same bag. This approach provides comprehensive moisture control while maintaining the cost advantage of buying in larger quantities.
Where should you place moisture traps with 2.5kg Kontrol Krystals?
Position larger moisture traps on stable, level surfaces in central locations where air circulates freely. In bigger motorhomes, consider using multiple traps in different zones rather than one large system. Avoid placing traps directly on carpets or upholstery as spilled calcium chloride solution can cause damage. The increased collection capacity of larger traps means they can sit in less accessible locations without requiring frequent attention.
How often should you check traps using 2.5kg Kontrol Krystals?
Check larger capacity traps monthly during storage periods, though humid coastal locations may need more frequent monitoring. The increased crystal quantity and larger collection containers mean less frequent maintenance compared to smaller systems. Empty the liquid when the container reaches three-quarters full to prevent overflow. During active camping periods, weekly checks ensure optimal performance and prevent accidental spills.
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If you’ve changed your mind about keeping your purchase, please return it in its original condition with proof of purchase and we’ll exchange or refund it. Unless faulty, this should be within 100 days of receiving your order. By original condition, we’d expect this to mean that you’ve kept packaging and labels, and that the item is undamaged and unused.

For further information of how to return your item, please visit the "Returning an Unwanted/Faulty/Damaged Item" section on our Help Page.
  Did you know we have been established and have been in the caravan and motorhome industry for over 50 years?

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