Duct systems for heating, ventilation or for air conditioning are a feature of many large commercial buildings.
Duct systems are found in all types of building from offices and factories to hospitals, schools and residential and care homes for the elderly.
The materials used for their components can be anything from metal to fibreglass to plastic channels, depending on their age, and sometimes plastic-covered coiled wire tubes.
The typical system will include the ducting, inspection hatches, junctions and duct branches, where the ducts are directed through all parts of the building as well as air blowers for moving the air through the system and smoke or fire dampers.
There are several good reasons for ensuring that a duct system is working well and in good repair.
Perhaps the most important is that the quality of air in the system needs to be maintained for the health of the building's occupants.
In the case of residential or care homes, where occupants are likely to be elderly, frail and less mobile this can be particularly important. Adequate heating and good air quality are plainly going to be essential to people with a higher than average vulnerability to infections.
The residents' families and loved ones will want to be assured that they are comfortable and receiving the best possible care in the best possible environment.
The owners and managers of such buildings obviously have a duty of ensure this and a duct system working at optimal efficiency is important to ensure the environment they are living in is as healthy and germ-free as possible.
The efficiency of such systems is also important for controlling energy costs and preventing the risk of fire.
One care home organisation recently discovered that it could make significant efficiency savings by using a common approach to the regular cleaning of its extract systems. So it put in place a centrally-negotiated contract with a specialist cleaning companyfor its entire estate to improve both cost and quality control.
The chosen company worked to quality standards laid down by the HVCA (Heating and Ventilating Contractors' Association) and had the technical expertise and specialised equipment to be able to handle duct systems that had been installed at different times from a variety of materials.
Its first task was to thoroughly inspect existing systems and identify any problem areas.
In one building it identified that rubber seals connecting ducts were perished and needed replacing. It also identified that parts of the system were inaccessible and suggested the installation of additional inspection hatches.
Once work had been carried out to repair and improve the duct system the company arranged a regular programme of inspection and maintenance and an annual ductwork cleaning programme to ensure that the system remained both efficient and free of any build-up of residues that could affect the health and safety of the residents.
A regular programme of maintenance, inspection and ductwork cleaning will ensure the duct system is free of mould, dust mite and other build-up that can affect the air quality or increase the risk of fire.
Author Resource:
A regular programme of duct cleaning by a specialist cleaning service familiar with a variety of materials can help protect the vulnerable and elderly from air-borne infections in residential and care homes, reports writer Ali Withers.
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