Published: 21/01/2026
Why Is Proper Filtration Critical for Industrial Compressed Air Systems?
Compressed air is critical in a wide variety of industrial processes, but it’s not deemed 100% pure for all applications. According to studies, each cubic foot of compressed air could contain up to 10 contaminants. With this in mind, proper filtration is critical. However, it’s not as simple as choosing any system on the market. Most compressed air systems will require certain types of air filters, and that’s where Air Supply Manchester can advise.
What is an air filter system?
An air compressor filter is used in compressed air systems to ensure a clean air supply. It acts to remove pollutants before they reach pneumatic tools and processes. Even the most expensive air compressor systems can suffer performance issues without adequate filtration – and even pose safety risks in certain industries.
Explore additional types of air treatment solutions, such as dryers and receivers, in our blog, Compressed Air Treatment: What You Need to Know.
Common contaminants in compressed air
Some common contaminants found in compressed air are:
Water vapour/moisture
Water vapour is a key catalyst for bacterial growth. When microorganisms thrive in warm environments, they multiply. Therefore, the moisture content within compressed air means it’s no longer sterile. A moisture filter for compressed air is essential when strict quality standards are non-negotiable – such as in hospitals or food environments.
Dust particles
Although compressors are typically fitted with inlet filters, fine dust particles are small enough to pass through. Once inside, these particles can accumulate and spread downstream throughout the system.
Oil particles
Oil contamination is another challenge, particularly in facilities with oil-injected compressors. Microscopic oil vaporisers can be at risk of entering the compressed air supply. And while it’s the least severe contaminant in contrast to those above, it’s still a cause for concern in many processes.
Why is air compressor filtration important?
There are several reasons why compressed air filtration cannot be ignored in certain industrial facilities, including:
Quality standards
For many applications, the industry-standard ISO 8573 regulation comes into play. This standard outlines acceptable limits for moisture, dust and oil ingress. By classifying air purity, manufacturers have a clear guide for the correct cleanliness of the air. This is especially crucial in environments such as pharmaceuticals, and food and beverages.
Cutting energy costs
Poor filtration increases pressure drops and forces the compressor motor to work harder than necessary, which can skyrocket your energy bills. Instead, the correct filtration system minimises the resistance of working internal parts so that the air can flow sufficiently.
Protecting internal components
Contaminants can play havoc with the compressor’s internal components. Particles may begin to cover the likes of pneumatic cylinders and valves, which can speed up everyday wear and tear. So, it’s wise to invest in an air filter system to reduce ongoing maintenance and improve the system’s lifespan.
Get in touch with our air compressor filter experts today
Compressed air must be properly treated to adhere to the required quality standards. If you’re looking to improve your air quality, our team of specialist engineers is on hand to help. We’ll assess your unit and recommend appropriate filtration solutions for your new or used compressor. To learn more about compressed air treatment, get in touch.
Or, if you’re looking for a complete compressor system design with filtration already integrated, we design and install whole systems too. Please get in touch with our team to discuss your requirements! Please call +44(0)161 5183440 or email sales@airsupplymanchester.co.uk.