Cleaning of ventilation and air conditioning systems is a mandatory procedure at all enterprises with a large release of harmful substances, dust and fats in the production process. Ventilation cleaning is carried out by HVAC cleaning services periodically with subsequent preparation of an act and passing an inspection by state authorities. For violation of cleaning requirements, a fine may be imposed on the enterprise.
Cleaning of ventilation and air conditioning systems at the enterprise is necessary to ensure high-quality removal of harmful fumes. During operation, any ventilation system inevitably becomes contaminated.
Cleaning the ventilation system allows you to eliminate dust, grease, fungi and bacteria, and debris. If the ventilation and air conditioning systems are not cleaned, this not only leads to a disruption of air exchange in the room, but can also provoke employees to contract infectious diseases.
Cleaning of chimneys, ventilation and air conditioning is specified as a mandatory procedure in the law and sanitary standards of enterprises. Only licensed enterprises and companies with the appropriate equipment can carry out professional cleaning.
The procedure consists of several stages with mandatory final quality control of cleaning and samples. As a result of cleaning, a conclusion is drawn up, which is submitted to the regulatory authorities.
Methods of cleaning ventilation and air conditioning systems
Duct cleaning methods include dry and wet technologies. The method depends on the type of pollutants. The most common technologies include:
- mechanical - industrial vacuum cleaners and special brush machines, blowing machines are used;
- chemical - the use of chemical reagents and mixtures followed by cleaning of the destroyed layers.
Cleaning of ventilation and air conditioning systems is carried out with preliminary disassembly of equipment, removal of grates, nets. Personnel are removed from the premises during the cleaning process. Before starting the system is blown out and tested.
Cleaning of ventilation depends on the design features of the system. In complex systems, combined methods can be used. In this case, the presence of an engineer and a person responsible for safety at the facility is mandatory.
In most cases, cleaning is carried out in one stage on one day as follows:
- the equipment is switched off;
- grilles, diffusers and other obstructing elements are removed;
- the ventilation is cleaned and blown out;
- removable elements are cleaned (mechanically);
- the system is being assembled;
- The equipment is started and its functionality is checked.
When all work is completed, a report is drawn up, samples are taken, a document on the quality of cleaning is filled out, which must be presented to the sanitary station. Cleaning of domestic and industrial ventilation systems differs in both the scope of work and the methods used. Residents of an apartment or house can carry out domestic cleaning themselves, and enterprises must involve specialized companies.
For home use, it is also recommended to order the services of specialists if you have not cleaned for a long time. Only with the help of special tools and technologies can you perform a complete cleaning of the system, while on your own you can only clean accessible areas.
And remember: you shouldn't skimp on the ventilation system! It directly affects your family's health.
How is HVAC cleaning rated?
The assessment of the cleaning of ventilation and air conditioning systems is carried out visually and with the help of laboratory samples. The studies allow calculating the total microbial count. It shows how much contamination remains in the system.
If the indicator does not exceed the maximum permissible according to sanitary requirements, then the chimney cleaning was successful. The standard is different for each type of enterprise. At the same time, the cleaning of ventilation and air conditioning systems should end with a clean ventilation system. This is considered to be a system where there are no pathogenic bacteria and microorganisms.
