The answer to 'how much does humidifier cost in Illinois' is that the cost of a humidifier can vary significantly depending on several factors. Typically, whole-home humidifiers in Illinois can range from $300 to $800 for the unit itself, plus installation costs. Portable humidifiers may cost $50 to $200 on average.
The specific cost of a humidifier in Illinois will depend on the size of your home, the type of humidifier (whole-home or portable), the features and efficiency of the unit, and the complexity of the installation. It's important to get quotes from local HVAC contractors to understand the exact costs for your home and needs.