Average Hourly Cost: The average hourly cost for window sash replacement in the window installation service category is typically around $75 per hour. Depending on the complexity of the job, the cost can range from $50 to $100 per hour.

Cost Breakdown: The cost of window sash replacement 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 consists of the labor fee, the cost of the window sash, and any additional materials required. The labor fee is usually the largest portion of the cost.

Factors Affecting Cost: Several factors can affect the cost of window sash replacement. The type and quality of the window sash will have an impact on the cost, as will the complexity of the job. The location and service provider can also affect the cost, as the rates for labor can vary depending on the area. Additionally, the cost of materials may vary depending on the region.