Air quality assessment and treatment

Maintaining and improving air quality and hygiene is essential for buildings where people live and work. In artificial environments; where air temperature and flow is controlled via heating and ventilation systems, air handling and air conditioning units; bacteria, unwanted particles and allergens can be a problem, affecting the efficiency and safe running of plant, while causing health issues for building occupants known as ‘Sick Building Syndrome’ (SBS).

Guardian provides air quality assessment, treatment and air hygiene management services for a range of buildings, including office blocks, shops, hospitals and leisure facilities, to ensure legal compliance, a safe environment, plus the overall efficiency and long-term running of air handling systems and associated plant.

Air quality services

Sick Building Syndrome

Sick Building Syndrome (SBS) is caused when ventilation systems are clogged up with dirt and dust, leaving occupants feeling lethargic and suffering from ailments such as throat, eye and nose irritation and in extreme cases, dizziness and nausea.

Air quality assessment

Poorly maintained air systems can be a breeding ground for fungal and bacterial growth, which, once in the system, can spread disease through the ductwork. To assess air quality in a building, Guardian monitors the following:

  • Temperature
  • Carbon monoxide
  • Carbon dioxide
  • Relative humidity
  • Airborne dust particulates
  • Airborne fungus and bacteria

By improving and maintaining air quality, apart from safeguarding occupants’ health, the overall performance of heating, ventilating and air handling/conditioning systems will remain efficient, with less chance of breakdown.


All of our clients have access to GuardianCare, an online reporting system that enables works relating to a specific site to be viewed in real-time. No more waiting weeks for paperwork to arrive – all relevant documents, certificates, engineers’ work sheets or any other information can be viewed on-screen and printed instantly.