The labor cost to install a dehumidifier can vary depending on factors such as the complexity of the installation, the size and type of dehumidifier, and the location of the installation. On average, you can expect to pay between $100 to $300 for labor.
A basic installation of a standalone dehumidifier in a residential setting may be on the lower end of the cost spectrum, while a more complex installation that involves integrating the dehumidifier with the HVAC system or installing a whole-house dehumidifier could be on the higher end.
To get an accurate estimate for your specific situation, it's best to contact a licensed HVAC professional or a contractor who specializes in dehumidifier installations. They can assess your needs, provide recommendations, and give you a more precise labor cost for the job.