Average Hourly Cost: The average hourly cost for HVAC system troubleshooting by a HVAC contractor is around $100.

Cost Breakdown: The cost breakdown for HVAC system troubleshooting includes the cost of the labor, parts, and any additional materials needed. The cost of labor is typically the highest cost, followed by parts and materials.

Factors Affecting Cost: Several factors can affect the cost of HVAC system troubleshooting, including the type and quality of the accessory, the complexity of the job, and the location and service provider. For example, a more complex job may require more time and higher-quality parts, which will increase the cost. Additionally, the cost of labor and materials may vary depending on the location and service provider.