HVAC System Clean Room

Cleanrooms are used in practically every industry where small particles can adversely affect the manufacturing process. They vary in size and complexity and are used extensively in industries such as semiconductor manufacturing, pharmaceuticals, biotech, medical device, and life sciences, as well as critical process manufacturing common in aerospace, optics, military and Department of Energy.
A cleanroom is any given contained space where provisions are made to reduce particulate contamination and control other environmental parameters such as temperature, humidity, and pressure. The key component is the High-Efficiency Particulate Air (HEPA) filter that is used to trap particles that are 0.3 microns and larger in size. All of the air delivered to a cleanroom passes through HEPA filters, and in some cases where stringent cleanliness performance is necessary, Ultra Low Particulate Air (ULPA) filters are used.



Personnel selected to work in cleanrooms undergo extensive training in contamination control theory. They enter and exit the cleanroom through airlocks, air showers, and/or gowning rooms, and they must wear special clothing designed to trap contaminants that are naturally generated by skin and the body.
Depending on the room classification or function, personnel gowning may be as limited as lab coats and hairnets, or as extensive as fully enveloped in multiple layered bunny suits with self-contained breathing apparatus.
Cleanroom clothing is used to prevent substances from being released off the wearer’s body and contaminating the environment. The cleanroom clothing itself must not release particles or fibers to prevent contamination of the environment by personnel. This type of personnel contamination can degrade product performance in the semiconductor and pharmaceutical industries and it can cause cross-infection between medical staff and patients in the healthcare industry for example.

Cleanroom Overview

Clean rooms can be a variety of sizes. Entire manufacturing facilities can be contained within a clean room with the area covering thousands of square feet. They are used extensively in semiconductor manufacturing, biotechnology, the life sciences, pharmaceutical, semiconductor, electronic, optics, military/ aerospace, medical, pharmacy, FDA valid table, manufacturing/industrial, packaging industries, and other fields that are very sensitive to environmental contamination.
Clean room air coming from an outside source is filtered to eliminate dust, and the inside air is recalculated constantly through HEPA air filters and/or ultra-low particulate air (ULPA) filters that remove containments produced from within the clean room.
Personnel enter and leave clean rooms through airlocks (sometimes including an air shower stage), and wear protective clothing such as hats, face masks, gloves, boots and coveralls.