Average Hourly Cost: The average hourly cost for an HVAC system retrofit for a hvac contractor is around $100 - $150. This rate may vary depending on the complexity of the job, the type and quality of the accessories, and the location and service provider.

Cost Breakdown: The cost of an HVAC system retrofit typically includes the cost of the parts, labor, and any additional services. Parts are usually the most expensive part of the retrofit, with labor and additional services making up the rest. The cost of parts will depend on the type and quality of the accessories being used, while the cost of labor and additional services will depend on the complexity of the job.

Factors That May Affect Cost: Several factors can affect the cost of an HVAC system retrofit, including the type and quality of the accessories, the complexity of the job, and the location and service provider. The type and quality of the accessories can affect the cost of parts, while the complexity of the job can affect the cost of labor and additional services. The location and service provider can also affect the cost, as some providers may charge higher rates than others.