When evaluating a drying ironer, you must prioritize heating efficiency and roller configuration. Look for stainless steel rollers with a diameter of at least 500mm to 800mm to ensure a large contact area for faster drying. The heating method (Steam, Electric, or Gas) should align with your facility's utility costs; steam heating is generally the most cost-effective for high-volume operations. Additionally, ensure the machine features variable frequency drive (VFD) speed control to adjust for different fabric thicknesses and automatic moisture sensors to prevent over-drying and fabric damage.