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How to Pick the Perfect Desiccant Air Compressor Dryer. The experts at Power Equipment Direct explain the differences between silica desiccant dryers and activated carbon desiccant air dryers


Desiccant Dryer Buyer's Guide

How to Pick the Perfect Desiccant Air Compressor Dryer

Air Compressor
Product Expert
Desiccant Dryer Buyer's Guide

Desiccant dryers make wonderful air dryers for any season.

Because they don't rely on a reduced dew point like refrigerated dryers do, they can actually filter moisture in temperatures as cold as -100 degrees Fahrenheit.

There are a couple different types of desiccant used in these dryers. You may be best suited with one over the other depending on your application.

Activated Carbon

Activated Carbon Desiccant Dryer
Another very effective desiccant used is activated carbon. This is a very porous material with increased surface areas.

Activated carbon is more resilient than silica gel, and so it can be regenerated and reused rather than continuously replaced.

With two towers containing activated carbon, a desiccant dryer can actually regenerate one tower while using the other to adsorb incoming moisture. This creates a continuous cycle that makes the dryer very reliable.

Shop All Activated Carbon Desiccant Dryers

Silica Gel Desiccant
Silica Gel Desiccant Dryer
The desiccant most commonly used is silica gel. Silica is what comes in the little paper pouches found in packaging, but in this case there's a lot more of it.

As the incoming air is passed through the silica gel, the moisture sticks to the surface of the many small pours contained in it. This process is called adsorption.

When the silica has become fully saturated, it generally changes color, indicating that it needs to be replaced.

Shop All Silica Gel Desiccant Dryers

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