Carpets made of synthetic fibre will usually air-dry on their own in 3 to 4 hours. Wool, on the other hand, will stretch the timeframe from 6 to 8 hours or even more if the fabric is thicker. Please note that during the drying process a significant smell might appear due to the nature of the wool fabric. Upholstered items take a bit extra time to completely dry between 6-8 hrs. However, mattresses take approximately 12-24 hrs. A significant factor to speed up the drying process is the airflow and ventilation of the room. Frequently asked questions about Professional Carpet and Upholstery Cleaning