What Are Ozone Cabinets and How Do They Work?

Modern textile hygiene demands more than just washing, especially in sectors where odour, bacteria, or delicate items challenge traditional cleaning methods. Ozone cabinets are powerful tools to disinfect, deodorise, and protect fabrics without heavy chemicals or water. In this guide, we’re looking at what ozone is, how ozone cabinets work, their effectiveness, and which industries should utilise them.

What is Ozone? 

Ozone is a molecule made up of three oxygen atoms. It forms naturally in the atmosphere, lightning and UV radiation are examples, but it can also be produced artificially for industrial and commercial applications. What makes ozone especially useful is its strong oxidising power. When ozone comes into contact with bacteria, viruses, fungi, or odours, it oxidises their cell walls or volatile organic components, effectively neutralising them. After doing its job, ozone naturally decomposes back into regular oxygen. 

How Do Ozone Cabinets Work?

An ozone cabinet is a sealed enclosure designed for treating textiles and accessories. The basic steps in the operation are:

1.    Loading and Sealing

Garments, shoes, accessories, bedding or similar items are placed inside the cabinet. The door is locked to create a sealed environment. 

2.    Ozone Generation

Ambient oxygen is converted into ozone using ceramic plates, corona discharge, or similar generators. The cabinets generate around 7 ppm during the active phase.

3.    Sanitisation & Deodorisation 

Ozone gas circulates, oxidising microorganisms and odour molecules, requiring water, heat, or harsh chemicals. This can remove microbes like bacteria, fungi, viruses, and neutralise odours from sweat, smoke, food, or mildew. 

4.    Ozone Destruction & Ventilation

After the treatment time ends, built-in filters - often active carbon filters or catalytic converters - destroy excess ozone, reducing it to safe levels. The cabinet unlocks after this phase, allowing safe removal of treated items

How Effective is Ozone Cleaning?

Effectiveness depends on ozone concentration, exposure time, item placement, and fabric type. Key effectiveness metrics include:

•    Germicidal Power: Ozone cabinets are capable of killing up to 99% of microorganisms.
•    Odour Elimination: Because ozone breaks down odour-causing volatile organic compounds rather than just masking odours, results are more long-lasting than typical fragrance-based fresheners.
•    Fabric Safety: Without water, high heat, or strong chemicals, ozone is gentler and suitable for delicate fabrics, boots, uniforms, leather, hats, and costumes. However, safety features such as door locks and controlled ozone destruction are essential to protect users and preserve fabrics. 

Limitations include that ozone may have reduced penetration in thick-layered textiles or uneven exposure if items are crowded. Also, regulations and safety guidelines must be followed since ozone at high concentrations is harmful to the lungs and must not be inhaled. 

Choosing the Right Cabinet Size

Ozone cabinets come in a range of sizes, from compact single-garment units to larger walk-in or multi-item cabinets designed for higher throughput. The right size depends on your daily volume and item type — a hotel treating a handful of guest robes and towels between stays needs far less capacity than a fire service depot cycling through multiple sets of protective gear each day. As with most commercial equipment, undersizing means longer queues and more cycles to get through a day's items, while oversizing wastes both floor space and energy running a partially-loaded cabinet.

What Industries Should Use Ozone Cleaning?

Ozone cabinets are useful wherever hygiene, deodorisation, or rapid turnaround of textile items is important. Examples include:

•    Healthcare & Care Homes: Uniforms, bed linen, gowns, and curtains all need sanitary disinfection and odour control.
•    Hospitality, Hotels, B&Bs: Guest towels, robes, bedding, soft furnishing, and guest clothing benefit from quick freshening between stays.
•    Dry Cleaners & Performance Arts: Costumes, theatrical gowns, accessories like hats or gloves that can’t undergo traditional washing. Ozone cleaning aids in preventing damage to delicate fabrics.
•    Gyms, Spas, Fitness Centres: Sweat-laden towels, mats, and accessories – using ozone cabinets can help to reduce odour and eliminate microbes. 
•    Firefighting & Protective Services: Boots, overalls, helmets, and respiratory gear which pick up smoke, odours, and pathogens. Ozone’s oxidising action can help clean without harsh chemicals damaging materials.
•    Self-Service Laundries & Retail: For customers wanting fresh, hygienic garments or items that aren’t washed daily, retail shops may use self-service laundries to freshen stock or display clothing. 

Safety & Regulation Considerations

Ozone fumes are hazardous above certain concentrations and exposure. Good ozone cabinets are sealed units that release no ozone to ambient air after a cycle, have safety interlocks, and rely on filters or catalysts for ozone destruction. Users must ensure compliance with UK health and safety guidance. 

Ozone Cabinets vs Traditional Sanitisation Methods

Ozone treatment isn't the only way to sanitise and deodorise textiles — here's how it compares to the alternatives:

•   Chemical laundering: Effective, but repeated exposure to harsh detergents and disinfectants can wear down delicate fabrics over time, and items need to be fully washable in the first place — something not always true of boots, hats, or protective gear.
•   Steam treatment: Good for wrinkle removal and some sanitisation, but high heat and moisture can damage certain materials and doesn't penetrate as thoroughly for deep odour removal.
•   UV sanitisation: Effective on exposed surfaces, but UV light can't reach folds, seams, or the inside of footwear the way a gas like ozone can, and doesn't address embedded odours.
•   Ozone cabinets: Reach into folds and fabric fibres without water, heat, or chemicals, making them well suited to items that can't be washed conventionally or need frequent, gentle refreshing between full washes.

Ozone cabinets are a potent addition to commercial laundry hygiene arsenals. They combine speed, disinfection, odour neutralisation, and environmentally friendly operation. For industries where fabric cleanliness, guest satisfaction or staff safety is vital, they can reduce costs, raise quality standards, and align with sustainable operations.

If you want help choosing the right size, safety features, or integrating one into your facility’s workflow, reach out to our expert team for a tailored recommendation

Frequently Asked Questions

Is ozone safe to use around staff and customers?
Yes, when used correctly — a properly designed ozone cabinet is a sealed unit with safety interlocks and built-in filters that destroy excess ozone before the door unlocks, so no ozone escapes into the surrounding room during or after treatment.

Can ozone cabinets fully replace washing?
No — ozone treatment sanitises and deodorises, but it doesn't remove stains or soiling the way washing does, so it's best used alongside regular laundering rather than as a full replacement for it.

How long does an ozone cabinet cycle take?
Cycle times vary by cabinet and item type, but treatment plus the ozone-destruction and ventilation phase typically takes well under an hour, making it fast enough for same-shift turnaround between uses.

Will ozone damage delicate fabrics or materials?
Generally no — since ozone treatment doesn't involve water, high heat, or harsh chemicals, it's considered gentler than most traditional cleaning methods, though very thick or tightly packed items may see reduced penetration.