While it’s always worth bringing in an expert for a consultation if you’re unsure, there are two times when it makes the most sense to replace your air conditioner. The first is when you have new cooling needs in your home, like choosing to cool portions of your home that didn’t need it before or adding new members to the family. The second is if the costs of keeping your old air conditioner are higher than the cost of a new one, it’s time to go for the upgrade. This includes repair costs, as well as the difference in energy bills.