- FläktGroup
- Applications
- Life science
- Hospital ventilation
- Operating Theatre Ventilation
Operating Theatre Ventilation
During an operation human life must be safeguarded to avoid contamination from the surrounding area.
CONTAMINATION CONTROL IN HOSPITALS
Safeguarding human life at it's most vulnerable
To understand HVAC solutions within an operating theatre we must first be aware of the varirty of risks. Our specialist hospital ventilation solutions have been developed to meet the specific needs of this application type.
During an operation contamination can come from 2 main sources.
- Engogenous, which essentially comes directly from the patients skin or body matter; or from an infected prosthesis or implant.
- Exogenous, which comes from the surrounding environment or surgical staff and their equipment.
The understanding of the above leads us on to consider such things as direct and indirect contamination. Direct meaning items that will directly be place in contact with the patient during surgery such as surgeons hands and instruments. Indirect is therefore contamination which might come from dust in the air, droplet nuclei, even the fibres in clothing or airborne infectious diseass.
What is needed
- Supply air needs to be filtered in three stages with a HEPA filter at the third stage
- Low turbance airflow above the operating table (almost laminar)
- Overpressure to the neighbouring rooms needs to be maintained at ca. 15Pa
- All surfaces inside of the room should be smooth and easy to clean – rounded corners, reduced numbers of joints
CLEAN ROOM VENTILATION

To create a safe environment to carry out medical operations for both staff and patients operating theatres must meet stringent codes of cleanliness.
Clean room ventilation presents some of the most complex challenges for air treatment. Clean rooms demand absolutely top standards of competence, sophisticated air treatment, as well as specific experience for clean rooms that you can trust. Clean Rooms must satisfy all international clean room standards and ISO classifications and the need too exceed conventional quality levels.
Clean rooms must conform to a specified, monitored level of contamination that is specified by a number of particles per cubic meter with a specified particle size. For example, an operating room requires a minimum of ISO Class 7, which allows 352,000 particles per cubic meter in the size range from 0.5 μm to 5.0 μm. An ultra-aseptic operating room can require ISO Class 5, which allows 3,520 particles in this particle size range. In comparison, the ambient air outside in a typical urban environment contains 35 million such particles.
FläktGroup customers profit from our comprehensive overall expertise in room air handling and filter technology. In contrast to other providers, we cover the entire process of air treatment and air filtration for supply air and extract air systems. We understand the interrelationships and manage them down to the smallest detail. As a result, we can offer highly effective, process-dedicated package solutions with energy-efficient technology – optimized for your sector and applications. Efficient Heat Recovery Systems and reliable Air Filtration Systems with low pressure drop assure considerable energy savings.
We deliver turnkey solutions on a one-stop shopping basis: beginning with building elements such as ceiling grid modules, filter and panel ceilings, laminar flow ceilings, room walls, wall paneling, windows, and doors – including development and installation of your clean room ventilation facilities and extending to after sales service.
Clean Room Ventilation Products - Suitable for Operating Theatres
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Fresh Heaven MAXX O POWER LAMINAR AIRFLOW UNIT
- Complete filtration of operating area with a function to mix supply air (from AHU) and recirculating air
- Easy installation, maintenance and disinfection
- Low initial pressure drop of HEPA filters
- Tailored dimensions with LED lighting and control unit
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Fresh Heaven MAXX O LAMINAR AIRFLOW UNIT
- Complete filtration of operating area
- Easy installation, maintenance and disinfection
- Low initial pressure drop of HEPA filters
- Tailored dimensions with LED lighting and control unit
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CGx Ceiling Air Outlet HEPA FILTER DIFFUSORS
- For turbulent displacement flow
- Suitable for all types of suspended ceilings produced for clean rooms
- Vertical or horizontal inlet with a possible filter integration
- Round or rectangular duct connection
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SANDWICH PANELS
- Painted or stainless steel sheet facing, custom design colours, various cores with no release of particles
- Matching flush glazed glass panels for non-opening windows and each panel type with rounded connections to floor and ceiling
- Easy maintenance, effective sanitation and resistance to disinfectants
- Guaranteed resistance to positive pressure of 200Pa, also for negative pressure applications and all classes of clean rooms
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Inwall FACINGS
- Inwall Click facings for clean rooms focus on minimizing the number of joints
- Panels maintain the rigidity and acoustic qualities within a clean room
- Easy and quick fixation to structural walls or construction by means of click profiles
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In combination with other systems (e.g. gypsum partition walls) Inwall Click facing meet increased fire resistance or sound insulation requirements
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DOORS & WINDOWS
- Air tightness guarantees pressure stability
- Flush with wall partitions and facings which ensures easy maintenance and flawless sanitation
- Control system with signalling and interlocks enables customized access to and from different clean-room areas
- Flexibility through doors on hinges and sliding doors, including automatic function
- Single and double leaf models, pass-through boxes and optional X-ray protection
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EXHAUST-AIR COMPONENTS
- Reliable ventilation of anaesthetic gases, particles and exhaust of room air burdened with microbes
- Various choices of extract-air components
- Seamless integration of extract-air components in all types of wall panels and facings
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CEILINGS
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A minimum number of particles is released from the panel surface
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Ease of installation, cleaning and sanitation, resistance to conventional disinfectants
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Joints between panels are sealed using permanently elastic sealant
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CAIRplus AIR HANDLING UNIT
- CAIRplus is the tailor-made premium range of modular air handling units for every customer requirement
- Environmentally-friendly design means an energy recovery system with high efficiency is available for every configuration
- Clean surfaces and ease of cleaning guarantee hygienic standards to VDI6022
- All units can be supplied with FläktGroup integrated controls ISYteq 4.0
- T2/TB2/L1/D1 Eurovent certified casing
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eQ MASTER® AIR HANDLING UNIT
- Tailor made for customer needs
- Energy Efficient and optimized with integrated control
- Large variety of high efficiency components
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EMSD CIRCULAR FLOW VARIATOR
- Real time air flow display
- No additional investment required in commissioning tool
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ECSS VOLUME FLOW RATE CONTROLLER
- Constant air flow for toilets, archives etc.
- Available for actuator driven adjustment e.g. day/night switchover
- Easy commissioning
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GLFC 0604-1204 BD2 (153 – 326 kW)
- Version with 4 scroll compressors
- SEPR-HT values up to 6.1
- 13 models in ErP 2021 compliant design to EU 2016/2281
- Versions available as Standard or Super Silent execution (SL)

The Econet Premium - Eliminate the risk
Separated air flows completely eliminate the risk of transfer airborne infectious disease, bacteria or pollution.
There are many building types and application which will benefit from 0% cross contamination. With Econet it is possible to recover heat from sections of the buildings which are normally not used for heat recovery such as garages and restaurant kitchens. This feature will increase the energy performance of the building.
Econet Premium is the smart solution for efficient energy recovery and truly hygienic air quality with many benefits.
eQ Master or eQL modular air handling units with Econet guarantees no cross contamination or odour transfer. Ideal for hospitals, residential buildings, pharma and microelectronic industries.
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FläktGroup Holding GmbH
Neue Höfe Herne
Bahnhofstraße 65-71
44623 Herne
+49 2323 6236 00
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