The secret is high airflows and utilizing engine heat to heat the air.  With up to 22 horsepower and airflows of up to 10,500 cfm, you can dry your grain anywhere you have grain storage.  And the fan is completely automatic, just set your target moisture and walk away.  By monitoring ambient conditions, the fan will automatically start and stop to ensure it only runs when conditions are right for efficient drying.  You can monitor progress and get notifications from anywhere on your Airblast app.