The decision to repair or buy a new air conditioner depends on the age and condition of your current AC unit, as well as the cost of repairs. If your AC is relatively new, well-maintained, and the repair cost is reasonable, repairing it might be the better option. However, if the unit is old, requires frequent repairs or the repair cost is high, investing in a new, energy-efficient air conditioner could be more cost-effective in the long run. A knowledgeable HVAC professional can help you determine whether repairing or replacing your AC is the best choice for your home and budget.