Published: 30/06/2026
Why Your Industrial Compressed Air System Needs an Air Dryer?
Every compressed air system produces moisture as part of the compression process. In fact, it’s completely unavoidable. When air is compressed through a system, the water vapour it contains becomes more concentrated and condenses. Without effective air treatment, this moisture can circulate throughout your pipework and equipment, leading to damage and potentially affecting product quality.
With this in mind, a dryer for a compressor is a vital piece of equipment in most industrial setups. Their job is to remove excess moisture before it reaches downstream equipment and causes irreparable damage.
In this guide, we’ll explore why moisture can be problematic and why you need an industrial air dryer for a compressor to keep industrial operations safe and running like clockwork.
Why is moisture in compressed air a problem?
Air always contains some level of humidity. However, when air enters a compressor, the moisture is compressed within it. As temperatures fluctuate within the system, water vapour condenses into liquid water. This can lead to several problems:
- Damage to the air compressor’s internal parts
- Corrosion in pipework
- Reduced efficiency of compressed air equipment
- Contamination of products and processes
The importance of compressed dryers for air treatment
Air treatment is the process of removing contaminants such as moisture from compressed air. While filtration is designed to remove solid particles and oil aerosols, air dryers specifically work to target moisture.
Thanks to moisture removal, your equipment has a much greater chance of extending its lifespan and maintaining air quality standards.
Different industries have very different compressed air quality requirements depending on how the air is used. In pharmaceutical manufacturing and food and beverage industries, for example, contaminated compressed air is not allowed. This is because it can harm product integrity and even the health and safety of recipients. These industries must therefore adhere to the ISO 22000 standard to assure the public that the compressed air treatment used is pure and safe.
The two main types of compressed air dryers
The vast majority of industrial compressed air systems use one of two primary types of dryers, which we’ll discuss in more detail below.
Refrigerated air dryers
Refrigerated air dryers are one of the most common and cost-effective solutions for moisture removal.
These systems work by cooling compressed air to a low temperature, causing water vapour to condense into liquid water. The condensed moisture is then separated and drained from the system before the air is reheated and delivered downstream. This system reduces humidity in compressed air systems by 50%.
There are several benefits of refrigerated air dryers, which include:
- Lower operating costs
- Minimal maintenance requirements
- Suitable for most manufacturing environments
- Energy-efficient moisture removal
Desiccant air dryers
Desiccant air dryers are designed for applications requiring exceptionally dry compressed air – such as in the food and beverage or medical industries. Instead of cooling the air, these dryers use specialised porous desiccant that absorbs water vapour from the compressed air stream. This process means desiccant dryers can achieve significantly lower dew points, often as low as -40°C.
Advantages of desiccant dryers include:
- Suitable for strict/sensitive manufacturing processes
- Reliable performance in heavy-duty applications
Find out more about compressed dryers with Air Supply Lancashire
If you’re keen to find out more about our industrial air compressor dryers, get in touch with the team here at Air Supply Lancashire. Our range of compressed air dryers is designed to remove moisture effectively and help maintain consistent air quality across all industries. We can visit your site premises to determine the best solution for you.