Refrigerated dryers are the most common type of compressed air dryer. They remove water from the air stream by cooling the air to approximately 3 °C (38 °F) and effectively condensing out the moisture in a controlled environment. 3 °C (38 °F) is the realistic lower limit for a refrigerated dryer because a lower temperature runs the risk of freezing the separated water. They are typically specified as primary dryers and generally produce air quality that is appropriate for approximately 95% of all compressed air applications.
The Words Warthog and the Stylized Warthog are Registered in U.S. Patent and Trademark Office. Reg. No. 7,109,357 and 7,109,356