The price of a 1.5-ton air conditioner from O General can vary depending on various factors such as the specific model, features, and the retailer. However, on average, an O'general 1.5-ton air conditioner can cost between $800 to $2,000. As with any air conditioner purchase, it's important to research and compare prices from different retailers to find the best deal. Additionally, it's recommended to consider the energy efficiency of the unit to potentially save on electricity costs in the long run. Other costs to keep in mind include installation fees and regular maintenance costs to ensure the air conditioner runs efficiently and lasts for many years.