{"id":14361,"date":"2026-04-09T06:41:11","date_gmt":"2026-04-09T06:41:11","guid":{"rendered":"https:\/\/alfatherm.com\/hvac-sustavi-bolnice-clean-room\/"},"modified":"2026-04-15T13:15:22","modified_gmt":"2026-04-15T13:15:22","slug":"hvac-system-hospitals-clean-room","status":"publish","type":"post","link":"https:\/\/alfatherm.com\/en\/hvac-system-hospitals-clean-room\/","title":{"rendered":"HVAC systems in hospitals and clean room technologies; design, standards and performance"},"content":{"rendered":"\t\t
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HVAC systems in hospitals and clean room systems are essential for ensuring safe and sterile conditions in modern healthcare infrastructure.<\/p>

The design and construction of HVAC systems in hospitals are the most demanding engineering tasks in the field of mechanical installations. In these facilities, HVAC is not just a support for the building, but an integral element of the medical process. The requirement for precise control of the microclimate, cleanliness and direction of air flow arises from the need to prevent the spread of pathogens, ensure sterility in critical areas and enable the safe operation of medical equipment and personnel, and ultimately provide healthy and safe treatment of patients.<\/p><\/blockquote>

Hospitals have one of the largest shares of technical systems in relation to the gross floor area of the facility, and these systems have complex interdependencies that must be included at the earliest stages of design.<\/p>

Therefore, it is important that HVAC systems are included in the architectural and functional planning of the hospital at an early stage. The location of the engine rooms, the guidance of installation routes through the technical floors, the alignment with the structure, medical gases and electrical installations require a methodological approach and precise coordination.<\/p>

Today, BIM technologies such as Revit, Navisworks, and platforms such as ACC are the standard because they enable digital collision resolution and maintenance optimization before the start of physical performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Specifics of microclimate and hygiene requirements<\/strong><\/span><\/h3>

In contrast to standard facilities, microclimatic requirements in hospitals are defined according to the clinical function of the space. There are no universal settings.<\/p>

Operating rooms, intensive care units, sterile preparations, transplant blocks, laboratories, patient rooms and biological waste treatment areas require different temperature, humidity and aerobiological parameters.<\/p>

It is precisely because of this heterogeneity that the designer does not dimension the system for a “facility”, but for a series of separate process zones that must act as one functional system without mutual contamination risk.<\/p>

Key requirements include:<\/strong><\/span><\/h5>

Air quality (IAQ) and high-efficiency filtration<\/strong><\/span><\/p>

Air quality in a hospital is not a subject of the category of comfort, but an element of health safety. Higher stage filtration, including HEPA standards, is used in high-risk areas where reduced particle count, controlled turbulent or laminar flow, and strictly defined air exchanges are required.<\/p>

The increased number of changes is not only a technical parameter, it allows for faster removal of biologically or chemically contaminated air volumes and improves the sterility and stability of the micro environment.<\/p>

Control of pressures and air flows<\/strong><\/span><\/p>

Pressure control and airflow management are one of the key mechanisms to prevent cross-contamination in hospital facilities.<\/p>

The system is based on establishing a cascade of pressures between different rooms and functional zones in order to define the direction of air flow and prevent the mixing of clean and contaminated volumes.<\/p>

Most often, a reference point is defined in the sterile or central zone, from which the relations of overpressure to the areas that need to be protected and negative pressure to areas with increased risk are set.<\/p>

The pressure cascade is not universal \u2014 it is shaped according to medical procedures and processes carried out in space, and is determined by a process engineer, taking care about the complexity of the functions that take place inside the hospital.<\/p>

The requirements vary significantly depending on the function of individual hospital units, for example:<\/p>