In general, the higher temperature you set in your apartment, the drier the rooms. Most people living in apartments have to use a humidifier in the window because the rooms are to too dry. It is possible that you have ventilation problem in your apartment -- moisture from your daily life can not be ventilated out. If that's the case, what you need is not a 烘干机 but a dehumidifier. A dehumidifier will suck in the room air, filtering out the water in the air and spit out the dry air. It is not cheap. You are looking at at least $100. It also costs lots of electricity to run. Fortunately, you don't have to pay for the electricity.
One simple solution is to open the window a little bit and keep the higher temperature setting for a few days.
Remember, 地毯被水浸湿发霉 could produce mold in your apartment which could be a serious health hazard in the long time.