Average Hourly Cost: The average hourly cost for a chimney firebox repair is typically around $150 per hour.

Cost Breakdown: The cost of a chimney firebox repair can vary depending on the type and quality of the accessory, the complexity of the job, and the location and service provider. Generally, the cost of the repair will include the cost of the parts, labor, and any additional materials needed for the job.

Factors Affecting Cost: The type and quality of the accessory used for the repair can have a major impact on the cost. For example, if a higher quality material is used, the cost will be higher. The complexity of the job can also affect the cost, as more complex repairs may require additional time and labor. The location and service provider can also have an impact on the cost, as service providers in certain areas may charge more for their services.