These refill krystals are made from calcium chloride flakes that pull excess moisture straight out of the air through a hygroscopic chemical process. The crystals work silently and start absorbing water vapour the moment you open the bag, turning condensation and damp into manageable liquid that collects safely in your Kontrol moisture trap. Caravan and motorhome owners rely on these refills to protect their vehicles during storage periods when condensation builds up quickly in enclosed spaces.?
Each 500g of krystals absorbs around 1 litre of moisture and typically lasts between 6 to 8 weeks, though this depends on how humid your environment is. The refills come in resealable bags so you can top up your Kontrol Streamline or Mega moisture traps without waste, and they need no power source or batteries to function. A 500g portion covers rooms up to 15 cubic metres effectively.?
The scent-free formula means there are no added fragrances, which matters if you're sensitive to perfumes or prefer your caravan to smell neutral. Worth noting that these krystals only work with Kontrol's own trap systems, not universal moisture collectors, so check compatibility before ordering. They tackle mould, mildew and musty odours by reducing the humidity that causes these problems in the first place.
Kontrol Refill Moisture Krystals (Scent Free) Features
- Calcium chloride crystals absorb moisture through hygroscopic action
- Scent-free formula with no added fragrances or perfumes
- Silent operation with no electricity or batteries required
- Resealable bags for easy storage and mess-free refilling
- Compatible with Kontrol Streamline and Mega moisture traps
Specifications
- Absorption capacity : 1 litre per 500g of crystals
- Duration : 6-8 weeks depending on ambient humidity levels
- Coverage : Effective for rooms up to 15 cubic metres (500g)
- Available sizes : 500g, 1kg, and 2.5kg refill packs
- Active ingredient : Anhydrous calcium chloride (CaCI)
Frequently Asked Questions
A 500g portion of Kontrol Krystals typically lasts between 6 to 8 weeks depending on the ambient humidity and temperature conditions in your caravan or motorhome. In high-humidity environments or during particularly damp winter months, the crystals will absorb moisture faster and need replacing more frequently. Each 500g absorbs approximately 1 litre of water before needing replacement.
Kontrol Refill Krystals are specifically designed for use with Kontrol's own Streamline and Mega Moisture Trap systems. These calcium chloride crystals work in drop-type moisture traps where the crystals sit in an upper chamber and the absorbed liquid drips into a lower collection chamber. They cannot be used in electric dehumidifiers or other brands of moisture traps unless those systems use the same drop-through design.
Kontrol Krystals contain calcium chloride, which is a stable compound used specifically for moisture absorption. However, the crystals should be kept out of reach of children and pets as they can cause irritation if handled directly or pose a choking hazard if ingested. When used correctly inside a moisture trap with the lid secured, the product is safe for home use. Always ensure your Kontrol trap is positioned where curious pets or children cannot access the crystals or collected liquid.
The liquid collected in your Kontrol moisture trap is a brine solution of calcium chloride and water. This can be safely poured down the drain or toilet with plenty of running water to dilute it. Do not pour the liquid onto garden plants or soil as the salt content can affect vegetation. If you spill the brine, clean it immediately with cold water as the solution will continue attracting moisture from the air, potentially leaving a damp patch.
Each 500g of Kontrol Krystals effectively covers rooms or enclosed spaces up to 15 cubic metres. For larger caravans, motorhomes, or rooms, you may need multiple moisture traps positioned in different areas to manage humidity properly. The coverage depends on factors like room size, ventilation, ambient humidity, and how sealed the space is. Smaller enclosed areas like wardrobes, cupboards, or under-bed storage compartments will see faster and more effective results.
Calcium chloride crystals naturally solidify as they absorb moisture from the air, forming a hard mass over time. This is a normal part of the moisture absorption process and indicates the krystals are working correctly. Do not attempt to break up the solidified mass as this is a sign the crystals have reached saturation. Once all the krystals have dissolved and turned to liquid brine in your trap's collection chamber, it's time to empty the liquid and refill with fresh krystals from your resealable bag.
The scent-free version contains only calcium chloride crystals with no added fragrances or perfumes, making them ideal for people sensitive to scents or those who prefer their caravan or home to smell neutral. Scented versions like Fresh Linen contain added fragrance compounds that release a pleasant aroma as the crystals work. Both types have identical moisture absorption capacity and performance, the only difference is the presence or absence of fragrance additives in the formula.
Kontrol Krystals require no power source whatsoever. The calcium chloride crystals use a hygroscopic chemical process to attract and absorb moisture from the air naturally, similar to how a magnet attracts iron filings. This makes them perfect for caravans and motorhomes during storage periods when mains electricity isn't available, and completely silent in operation unlike electric dehumidifiers which require constant power and produce noise.
Kontrol Krystals are a preventative solution that reduces humidity levels to stop mould, mildew, and damp from developing in the first place. They do not remove existing mould growth or stains that have already appeared on surfaces. If you already have visible mould in your caravan or motorhome, you'll need to clean and treat the affected areas first using appropriate mould removal products, then use Kontrol Krystals to maintain lower humidity levels and prevent the problem returning.
Your Kontrol trap needs refilling when all the crystals in the upper chamber have dissolved and turned into liquid brine that's collected in the lower chamber. Most Kontrol traps have a visible indicator or transparent sections so you can see when the crystals are depleted. Once the crystals are gone, simply pour away the collected liquid down the drain with running water, give the trap chambers a rinse if needed, and refill the upper chamber with fresh krystals from your resealable refill bag.
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