Central ventilation systems in residential buildings – necessary inspections and professional cleaning of pipelines.
The central ventilation system is a hygienic component of the building. Basically there are pure exhaust air systems or systems with supply and exhaust air. Pure exhaust air systems, for example, suck in indoor air from the kitchen, bathroom and WC and discharge it to the outside. The resulting vacuum absorbs fresh air through openings in the window frames or in the outer wall. In case of systems with supply and exhaust air, fresh air is blown into the lounges by means of pipelines. In this the regulation of fresh air is not carried out by the vacuum of the exhaust air fan, but by the adjustable air injection pressure of the supply air fans. A lot of systems are equipped with corresponding filter media, for example, in order to reduce pollen and further particles from the incoming air. Some systems have heat exchangers for heat recovery. The advantages of monitored ventilation are the healthy indoor air, energy saving and higher comfort for the residents.
Room users can definitely enjoy these advantages at a new carefully planned room ventilation system. However, if such systems have been in operation for a long time and if the necessary maintenance intervals have been neglected, the desired purpose of the system can have contrary impacts and even essentially impair the health of the room users. Studies prove that the majority of ventilation systems in residential buildings have serious deficiencies with regard to hygiene. In most cases ventilation firms only carry out the technical maintenance of their installed systems. The existing maintenance agreements hardly cover a comprehensive hygienic cleaning. Filter media can regularly be exchanged in the systems, however, the ducts and pipelines extending over many meters in the house remain non-cleaned. The daily practice shows that during the course of time dusts, spores and further particles are deposited in the ducts. If moisture builds up in such ducts over a longer time period, this will lead to the growth and multiplication of micro-organisms. The original hygienic ventilation system becomes a risk to health.
The system should be subject to a hygienic inspection each three years, so that the residents can use the advantages of a monitored ventilation system without any problems. For a system with air humidification this should be done each two years. Employees of the special-clean.com GmbH regularly inspect your ventilation system and conduct visual, physical and microbiological examinations. Striking features are described in a test report and discussed with the client. On demand, we hygienically clean your ventilation system. For this we use mechanic, rotating brush systems in connection with the renovation air flow system VENTGATE® , so that the deposits within the entire system are safely removed. Within this context, a disassembly of the system is not required. Hygienic safety is only guaranteed by a thorough cleaning of the overall system.
CLEANING OF VENTILATION AND EXHAUST DUCTS IN SINGLE-FAMILY AND MULTI-FAMILY HOUSES
The current energy saving regulation stipulates a clear reduction of heating energy consumption in residential buildings. Not only insulating materials but also intelligent house technology, like for example, room ventilation systems more and more come to the fore and will establish themselves as standard in the future. The air we need to breathe will increasingly be used for heating, cooling and moistening the indoor rooms. For this it is important that these systems work in an optimal manner. Functionality requires the supervision and maintenance of technical appliances as well as the hygiene inspection and cleaning of pipes and ducts.
Contamination in the air flows causes frictional resistances and pressure drop. For this reason, the original capacity of the system does not exist anymore and a higher energy consumption connected with additional costs is probable. The decrease in the rate of flow can already tip a healthy room climate and is a risk to the residents’ health due to the deposits in the pipes which should not be underestimated.
Due to regular inspection and cleaning of the system technology and above all the air flows a technically and hygienically impeccable condition of the entire ventilation system can be guaranteed.
We inspect and clean systems in the single-family sector, in multi-family buildings as well as in business and industrial and in public buildings, hospitals, supermarkets, motorway service stations, underground car parks etc. Our skilled personnel of special-clean.com GmbH will be pleased to advice you!
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Cleaning of installations and ventilation systems
To guarantee optimal economy and hygiene, the cleaning of air conditionings and ventilation systems can only take place mechanically. In order for this to be realized in the most different air ducts, we use a system technology which is adjusted to each situation. Remote-controlled cleaning robots as well as brush drives of different size and specification are used. The rotating and especially developed brush systems are optimally suitable for round and right-angled duct shapes. With an intelligent drive technology, the strong brushes poison-free clean the deposits on the inner walls of the air ducts.
The particles removed by the robot or brushes are then vacuumed off with a strong air flow by the redeveloping air guide system VENTGATE®, which is connected to the duct system. The supply air is then checked concerning its quality. Larger particles are collected in an enclosed filter system (dust trap). The sucked in air flow is derived to the outdoor area of the building and, depending on the situation, additionally HEPA-filtered (H13).
The system technology developed by us, VENTGATE® has the decisive advantage that no (filtered) fine particles and also no scents can get from the installation into the inner room air of the building during the installation cleaning. The resulting large dirt is properly recycled after the cleaning event. The tube system outside of each cleaning section is closed by a sealing balloon during cleaning. This measure is necessary so other areas of the installation are not unintentionally polluted, or so the air guidance in the installation is not changed uncontrolled due to the created negative pressure. In order to achieve a complete cleaning of the air ducts, it may be necessary to install so-called revision openings. Depending on the local situation, openings are cut into the ducts at according positions, which are closed off with according flaps after the cleaning measures. These revision openings ease later hygiene checks or cleaning measures.
CONTROL WITH VIDEO CAMERA
We control the cleaning process with high resolution video cameras during and after execution. Upon request, the customer receives a video recording (CD/DVD) for checking, as well as the result of a final laboratory control analysis. We provide optimal service on location to our customers, without complicated dismantling of the installation and without fine particles as well as odour disturbance as a consequence of the cleaning process. Time intensive and expensive dismantling for enduring cleaning of climate systems therefore belong to the past. Our mechanical cleaning technology is long-term tested and has proven itself in the most different installations.
NO CHEMICAL DISINFECTION
Sole disinfection measures of the channels with chemical products, as they are often used nowadays, are generally not used by us. Chemical disinfection measures do not remove the dirt and the deposits and are therefore not able to restore the original effectiveness of the installation. Internal analysis and controls after disinfection measures prove that spores of mold as well as resistant germs are often not or only incompletely removed. Although in strongly polluted ducts, and with a high chemical dose of some products, a reduction of the microbiological showed on the surface of the contamination, but an in depth effective and lasting effect of the used products can not be proven. It also has to be considered that destroyed microbiological components, as long as they get into the breathing air, may have an allergic or toxic effect. There also is the threat from the used disinfection substances that lasting disturbing odours develop which were not present before disinfection.
In accordance with our more than 10 years of experience in removing microbiological inner room contaminations, we can confirm that only the systematic, mechanical removal of microbiological contaminations is the method for optimal hygiene. We correspond with the content of the press information of the Federal Environment Department. Clean ventilation ducts and clean air are the conditions for a healthy inner room climate.
OUR SERVICES FOR COMMERCIAL AND PRIVATE INSTALLATIONS
- Initial inspection with documentation (CD/DVD)
- Inspection of the installation (VDI 6022, video documentation, laboratory analysis)
- Planning and organising of the cleaning
- Cleaning of the air ducts with installation specific system technology
- Air guidance with VENTGATE®, therefore odour-free and without fine particles in the building
- Chemical-free, mechanical and dry removal of pollution
- Quality controls (video documentation, laboratory analysis)
- Air volume flow analysis
- Control and cleaning of fire protection flaps
- Planning of individual maintenance