The DES/DX Commercial Dehumidifier is an ultra-efficient dehumidification system that combines the benefits of desiccant dehumidification and mechanical DX cooling. The system design permits the capture of condenser heat (normally rejected as waste) to power desiccant dehumidification. The DES/DX units provide low dew point air at space-neutral dry-bulb temperatures. Multiple standard DES/DX unit sizes are available from 300 to 15,000 cfm and unit design may be further customized to match required dehumidification capacity. Operation is fully independent of space temperature control so target humidity levels are maintained regardless of space cooling or heating demand.