The answer to 'how much does dehumidifier cost in Illinois' is that dehumidifier prices can vary widely depending on several factors. In general, you can expect to pay anywhere from $200 to $800 for a good quality dehumidifier in Illinois. The cost will depend on the size and capacity of the unit, the brand, energy efficiency, and any special features it may have.
Larger dehumidifiers designed for whole-home use will be on the higher end of that range, while smaller, portable units may be on the lower end. Energy-efficient models with advanced controls and features will also tend to cost more. It's important to choose the right size and capacity for your home's needs to avoid over or under-dehumidifying.