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Air Hygiene Services for Superyachts, Cruise Ships, Offshore and More

Clearvac provides extensive marine vessel air hygiene services, including HVAC ventilation system cleaning. These services are essential for meeting industry standards, insurance mandates, and health and safety regulations. We ensure the air circulated in occupied areas consistently meets the required standards.

In the case of extraction systems, we also address the removal of Fire Hazards and provide certification for insurance purposes.

Marine Vessel Air Hygiene Risk Assessments

Evaluation of hygiene within supply and extraction systems.

Analytical Sampling

Carried out to ascertain hygiene levels from within the ductwork.

Ventilation Cleaning

Thorough removal of all contaminants, ensuring good indoor air quality is achieved.

Disinfection Services

Eliminate microbiological growth on all supply systems.

System Compliance

Following the above-mentioned air hygiene services, a full service report and certification are presented to conform with current industry standards.

Extraction vent before cleaning

Extraction vent after cleaning

Marine Vessel HVAC Ventilation Systems Cleaning and Disinfection

Vessel air duct cleaning is now an essential component of a well-considered maintenance schedule. Poorly maintained air ducts on large vessels with high occupancy accelerate the growth of mould and bacteria.

As part of the air duct cleaning service, we thoroughly sanitise the supply and return ducts from end-to-end. This detailed process also includes components that distribute airflow, like supply and return air plenums, air vents, grilles, diffusers, extraction fans, transition boxes, louvred vents, and so on.

Operative wearing PPE paper suit, cleaning Hvac Air conditioning aboard a ship

Marine Vessel Air Purification and Ozone Treatments

(Mould, Bacteria, Virus and Odour Elimination)

Clearvac Engineering Asia employs ozone technology as a natural method to disinfect and sterilise internal living and working spaces. This technology is the most effective agent for neutralising bacteria, viruses, microorganisms, mould, fungi, larvae, and odours, making ozone a more potent and environmentally friendly solution compared to hazardous chemicals. Bacteria tend to thrive in environments with limited ventilation, warm temperatures, and humidity.

Clearvac offers ozone treatments using our custom industrial, European-built ozone generators. These machines sanitise internal spaces, eliminating contamination without any residue remaining, and as always, we cause minimal disruption to crew and guests.

The Science In Detail


Bacteria are small, single-cell organisms with uncomplicated structures encased in relatively robust cell membranes. Ozone disrupts the metabolism of bacterial cells, impeding and obstructing their enzymatic control system.

A sufficient amount of ozone penetrates the cell membrane, leading to bacterial destruction. In contrast, viruses are small, independent particles composed of crystals and macromolecules. They can only multiply within a host cell by transforming the host cell’s proteins into their own. Ozone eliminates viruses by entering their protein coat and targeting the RNA at their core.


Require Another Marine Service?

Explore Our Nautical Expertise

Phuket Boat Lagoon

Clearvac Engineering Asia Co., Ltd

Phuket Boat Lagoon: Workshop 20/78 Moo 2, Koh Keaw Sub District, Mueang Phuket District, Phuket 83000, Thailand.


English: +66 98 965 5388

English: +66 64 932 5117

ภาษาไทย: +66 89 926 6388

ภาษาไทย: +66 64 932 5117

Accounts: +66 93 580 2588




Learn more about our Phuket Facilities

Bangkok Refit Facility

Clearvac Engineering Asia Co., Ltd

Bangkok Refit Facility: The Bangkok Dock Company Limited, 174/1 Charoenkrung Road, Yannawa, Sathorn, Bangkok 10120, Thailand.


English: +66 98 965 5388

English: +66 64 932 5117

ภาษาไทย: +66 89 926 6388

ภาษาไทย: +66 64 932 5117

Accounts: +66 93 580 2588




Learn more about our Bangkok Facilitie

singapore office

Clearvac International Pte. Ltd

312A Tanglin Road #01-01, Singapore, 247982.


Whatsapp: +66 98 965 5388



Learn more about our Singapore Facilities


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