Carline - air-conditioning, ventilation and heating for your home and office > Business advices > WHY ARE DIAGNOSTICS AND MAINTENANCE OF VENTILATION IMPORTANT?
A worker carrying out maintenance of air-conditioning
Category: Business advices0

Oxygen supply to all body cells is a necessary condition to maintain health in the long term. Every medical condition is directly or indirectly connected with oxygen deficiency. Oxygen is crucial to all life processes.
A person can survive several weeks without food.
Without water – a few days.
Without oxygen – only a few minutes.

Mechanical and bacteriological impurities in the air have negative impact on the human health: from depressed mood and allergies to serious diseases of skin, eyes or the respiratory system. Diseases impede normal functioning: productivity is dropping and this in turn affects quality of work. Sick leaves begin to accumulate and the shortage of workers becomes increasingly problematic. Yet, it can be avoided. How? Beginning with the key element – the air!
The air should be clean, fresh and of good quality. This will improve the mood. A well oxygenated brain will be more effective and creative, while the body – fit and healthy.

Clean air. Is Ventilation* a solution? Yes, but it is not so simple! Ventilation installation by itself will not help much if it is infested with bacteria and germs. The key to the efficient operation of ventilation devices, and therefore to clean air, is regular maintenance and cleaning of ventilation ducts.

*Mechanical ventilation is a system controlling air exchange, using fans and filters in a building. It provides continuous supply of fresh air. Modern office building, production hall and service facilities should be equipped with such an installation as soon as possible.
How to take care of mechanical ventilation to ensure trouble-free operation?

Cleaning of ventilation ducts.

Comprehensive cleaning of ventilation ducts requires the use of appropriate equipment and tools. It is a task for specialists with suitable knowledge and skills.
To ensure efficiency of the cleaning process, it is important to begin with evaluating the condition of the ducts, their number and the nature of contamination. Depending on the type of contamination, the location, size and type of the ventilation system, the most appropriate cleaning method is then selected. Cleaning the ventilation primarily involves removing contaminants deposited in the ventilation ducts. The installation is then disinfected using adequate bactericide and fungicide agents. After the cleaning, it is important to schedule regular inspections and subsequent cleanings.

Let us take a closer look at all stages of the cleaning process.

Preliminary inspection

Firstly, the type of ventilation installed in the building should be determined. This enables to plan the diagnostic works of the ducts. Diagnostics can be carried out using specialized inspection cameras or by measuring contamination rate in smaller installations. In the case of extensive ventilation systems, the optimal solution is a direct examination of the duct. This can be done only in sturdy constructions enabling entering inside the duct to perform diagnostics of its interior.

Selecting the method of cleaning the ventilation system:

Brushing is the most common solution, effective in most ventilation ducts. It is carried out using cleaning robots or devices (electrical, pneumatic, hydraulic) with flexible rollers and brushes.
How does it work? The brush is inserted into the duct and cleans its surfaces. Impurities are collected in an extraction tank, installed on the opposite side of the cleaned section of the ventilation.
Vacuuming is an extremely effective method. However, it is effective only in short, easily accessible ducts or in large ducts, if a specialist can enter inside.
Compressed air is used instead of a brush and is efficient when dealing with small elements or in areas with limited access.
Dry ice, i.e. carbon dioxide in solid form obtained due to rapid gas expansion of CO2. This solution is perfect for small elements, such as cogs, grilles, fan propellers or chains. Dry ice sublimes, i.e. “disappears” without leaving traces. Frozen impurities can be easily removed using extraction devices.
Steam and water is useful when dealing with greasy contamination. Water with detergents and steam remove impurities. This method is recommended only if we the ducts are tight.


Duct cleaning is concluded with disinfection. Its purpose is to remove fungi, mites and bacteria. Diligence and accuracy are vital at this stage. It is important to use agents appropriate to the type of contamination. The application of general bactericidal products will not be sufficient, as they can remove only some of the unwanted compounds.

When should the ventilation be cleaned?

The need for maintenance can be signalled by unusually loud operation of the installation and a slight stuffiness in the room. However, non-experts in this field should call specialized companies equipped with special cameras to check if the ventilation requires cleaning. This will also help to identify the type of contamination of a given ventilation installation.

It is recommended to check and clean the ventilation once a year or every two years, but everything depends on the quality of the air in the area, the type of ventilation or the building material.


Health and well-being are the most important benefits of a careful maintenance of the ventilation. But there are more advantages! Regular cleaning and replacement of filters reduces risk of damages and malfunctions of the whole system. Clean ventilation ducts also reduce fire risk, extend operation and improve performance of the installation.

The Carline company can provide complete cleaning of your ventilation system. We will clean all fungi, bacteria, microorganisms and other germs.

More questions? Do you need advice? Does the ventilation system in your company require maintenance?

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