Ultra-dry compressed air

Atlas Copco Desiccant Dryers

Where you need extremely low levels of water vapour in your compressed air, a desiccant air dryer is a necessity. As a premier Atlas Copco UK distributor, Design Air (Scotland) Ltd supplies a complete range of desiccant dryers achieving -20, -40 and even -70°C pressure dew points.

These systems remove moisture to protect critical downstream equipment, prevent pipework corrosion and guarantee end-product quality for sensitive applications.

Atlas Copco desiccant dryer supplied by Design Air

-70°C

pressure dew point achievable

~80%

of lifetime cost is electrical energy

3-60 mo

finance options

7 yr

Guardian warranty

Lowest total cost of ownership Atlas Copco desiccant dryer

Why choose us

The Lowest Total Cost of Ownership

You will likely keep your new air dryer for at least 10 years, and around 80% of your total cost of ownership over that period is electrical energy.

Atlas Copco desiccant dryers are highly efficient and typically offer the lowest total cost of ownership once you factor in purchase price, running costs and maintenance. Many models feature Elektronikon® control with Dew Point Dependent Switching (DDS), which extends the drying cycle by monitoring the actual moisture load — preventing unnecessary regeneration and cutting energy use.

Buying with Design Air

Flexible Finance and a Long Warranty

Finance options

We can be flexible to meet your payment requirements. A new Atlas Copco dryer is a long-term investment, so we can finance it over 3-60 months. We can demonstrate that your monthly payments will be lower than the energy savings your new dryer delivers, so you save from day one.

7 Year Guardian Warranty

As official Atlas Copco distributors, agreeing a Guardian Service Plan with us means your new desiccant dryer comes with a 7-year warranty. If it ever fails to run reliably, you will not pay a penny for the repair — complete peace of mind and predictable maintenance costs.

The range

Our Range of Atlas Copco Desiccant Dryers

A regeneration method to match your energy budget and flow rate, from robust heatless designs to efficient blower purge units.

Atlas Copco CD and CD+ heatless desiccant dryers

Heatless Desiccant Dryers (CD & CD+)

  • 2 – 3,392 cfm
  • -20 / -40 / -70°C

Classic twin-tower dryers that regenerate using only compressed air as a purge. This simple, robust design is highly reliable and ideal for lower flow rates or hazardous environments where electrical components are a concern.

Key details
  • Max inlet capacity: 2 – 3,392 cfm (depending on model)
  • Pressure dew point options: -20°C, -40°C and -70°C
Atlas Copco BD and BD+ heated blower desiccant dryers

Heated Blower Desiccant Dryers (BD & BD+)

  • 100 – 6,360 cfm
  • -40 / -70°C

Highly efficient blower purge dryers using a combination of air from an external blower and heat to regenerate the desiccant. This drastically reduces the use of costly compressed air for purging, saving energy on 24/7 applications.

Key details
  • Max inlet capacity: 100 – 6,360 cfm (depending on model)
  • Pressure dew point options: -40°C and -70°C
Atlas Copco Cerades structured desiccant

Innovation

The Cerades™ Revolution

Some of Atlas Copco’s premium dryers use the revolutionary Cerades™ desiccant. Developed and patented by Atlas Copco, it is the first dryer to feature a solid, structured desiccant.

  • No dust: traditional desiccant beads break down over time, creating fine dust that contaminates your system. Cerades™ is a solid block, eliminating this risk and ensuring higher air purity.
  • Higher efficiency: air flows straight through the Cerades™ tubes, giving a much lower pressure drop than loose beads. This saves energy and reduces running costs.
  • Longer lifetime: Cerades™ is vibration-resistant, lasts longer and provides extended service intervals.
Atlas Copco heat of compression desiccant dryer

Maximum efficiency

Heat of Compression (HOC) & Rotary Drum Dryers

For the ultimate in energy efficiency, we also offer Heat of Compression dryers (such as the XD+ series) and rotary drum dryers (MDG, MD and ND range).

These dryers use the heat generated during air compression — energy that is normally wasted — to regenerate the desiccant. The result is a near-zero energy cost for regeneration, making them an ideal choice for critical oil-free air applications.

Atlas Copco desiccant dryer installation

Free quote

Specify the right desiccant dryer

Tell us the dew point, flow and pressure your process needs and we will recommend the most energy-efficient Atlas Copco adsorption dryer.

FAQs

Desiccant Dryer FAQs

What is a desiccant air dryer and how does it work?
A desiccant air dryer, also known as an adsorption dryer, removes moisture from compressed air by passing it over a hygroscopic (water-attracting) desiccant material. Most use two pressure vessels (a twin-tower design). While one tower actively dries the air, the saturated tower is taken offline and regenerated. This cycle ensures a constant, uninterrupted supply of dry air.
What is the difference between a desiccant dryer and a refrigerated dryer?
A refrigerated air dryer suits general-purpose applications, cooling the air to a pressure dew point of around +3°C. A desiccant dryer is used for critical processes requiring ultra-dry air, achieving much lower PDPs such as -20°C, -40°C or even -70°C. This prevents freezing in outdoor pipework during UK winters and protects sensitive applications in pharmaceuticals, food & beverage and electronics.
What does PDP (Pressure Dew Point) mean?
PDP, or Pressure Dew Point, is the temperature at which water vapour in compressed air will condense into liquid at a given pressure. A lower PDP means drier air. A -40°C PDP, for example, guarantees that no liquid water will form in your system unless the ambient temperature drops below -40°C.

Talk to Design Air

Ready for ultra-dry compressed air?

Tell us your dew point, flow and pressure and we will specify the right Atlas Copco desiccant dryer, quote it and show your return on investment.