Average Hourly Cost: The average hourly cost for installing a humidifier in an air conditioning contractor category is $80-$125 per hour.

Cost Breakdown: The cost of installing a humidifier in an air conditioning contractor category typically includes labor costs, the cost of the humidifier, and any additional parts that may be needed.

Factors Affecting Cost: The cost of installing a humidifier in an air conditioning contractor category can be affected by the type and quality of the humidifier, the complexity of the job, and the location and service provider. The more complex the job, the higher the cost. The type and quality of the humidifier can also affect the cost, with higher-end models costing more than basic models. The location and service provider can also affect the cost, with some providers charging more for their services than others.