Average Hourly Cost: The average hourly cost for hot tub shell replacement in the hot tub repair service category is typically around $90 - $110 per hour.

Cost Breakdown: The cost for hot tub shell replacement usually includes the cost of labor, parts, and any additional materials needed to complete the job. It is important to note that the cost of the shell itself is not typically included in the cost breakdown.

Factors Affecting Cost: There are several factors that may affect the cost of hot tub shell replacement, such as the type and quality of the accessory, the complexity of the job, and the location and service provider. The type and quality of the accessory can affect the cost, as higher quality materials and accessories may cost more. The complexity of the job can also affect the cost, as more complex repairs may require more time and effort. Finally, the location and service provider can also affect the cost, as some service providers may charge different rates depending on the location.