The risk of fire, the higher energy costs of running an inefficient system and the possibility of higher rates of breathing and other health problems among the building's users are the three main hazards associated with failure to maintain and clean air duct systems.All three of these are linked to the build-up of deposits inside the ducting and to the efficiency of filters that have become clogged or blocked with particles.Debris and dust can build up inside the system leading to a fire hazard, especially in commercial kitchens, where there is likely to be an amount of grease taken out of the air by the extraction systems. According to the UK's fire services this is one of the main causes of fires in restaurants and cafes.Moisture and debris provide the ideal conditions for the development of mould inside ductwork. Mould can affect the health of people who are exposed to it. People are mainly exposed by breathing spores or other tiny fragments.Symptoms of pallet mould manufacturers may be nasal and sinus congestion, asthma, sore throats, wheezing, skin and eye irritations or upper respiratory infections (including sinus), although one person may have a completely different reaction from another.The spread of infection via air duct systems can be a particular hazard in buildings such as hospitals, schools and residential homes for the elderly, where there are likely to be many people who are susceptible because they are already ill or frail so that their ability to withstand infections is not as robust as it would be if they were healthy.
