H2O Nationwide Ltd

H2O Nationwide Ltd

Air Hygiene Service

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In recent years, it has become commonplace for buildings in the UK to have some form of air conditioning system installed. Whether this be a large air handling system serving fresh air throughout a complex network of ducts or a simple split unit serving one small room, they all have one thing in common; to provide the building users with clean, fresh air. Over time these systems can become contaminated and they begin polluting the very areas they are supposed to be serving. The cause of the internal contamination can be any number of individual factors; poor filtration, age of system, geographical location of the building or design of the system. Left unchecked, these deposits can begin to appear as smuts on grilles, damaging decor and building appearance. Large deposits can begin to clog motors or coils and thus greatly reduce a systems operating efficiency. Perhaps most importantly, microbiological

1. System Inspection and Risk Assessment

The first stage in any ductwork cleaning project is to establish the levels of contamination by site inspection.  

Proposals for any necessary remedial works can then be submitted, which will often include undertaking works outside of normal working hours in order to minimise disruption to building users.

H2O’s customised air hygiene management programmes not only ensure regulatory compliance of buildings, but also prove to be an investment into the wellbeing of all building occupants.

2. Access Doors

Before works can be undertaken for the first time, it may be necessary to install additional access doors into the system to enable every internal component to be properly cleaned.

H2O can supply and install these doors as part of our inclusive package in providing complete air hygiene solutions.

3. Deep Cleaning

Using specially developed rotary brushing, sectional extraction and compressed air removal equipment, the ductwork is physically cleaned.

Our technicians are trained to use a combination of techniques to achieve maximum cleaning results - whatever the ductwork configuration.  

These techniques are incredibly efficient and ensure compliance with B&ES (formally HVCA) TR/19 and NADCA (National Air Duct Cleaners Association) guidelines.

4. Disinfection

Once physically cleaned, the entire system should then be fogged with a broad-spectrum biocidal mist to finally banish any bacteriological contamination. This ensures the building occupants are protected from any potential risks.

5. Certification and Completion Reports

Upon completion of all works a certificate is issued in confirmation of the works undertaken, which can be displayed to building users. Additionally, we can provide a completion report detailing each part of the system cleaned and the effectiveness of the clean by photographic evidence and deposit thickness testing (DTT) results.

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