Any product that you buy which costs a significant amount of money at this current point in time should be something that lasts a few years at least. However, the nature of how things tend to work means that at some point or another you would need to purchase a replacement since the product that you initially purchased would not be as high in quality as it used to be. As a result of the fact that this is the case, you need to ascertain the ideal frequency at which you can go about replacing any products that you currently own.
When it comes to air conditioners, things can get a bit tricky. You obviously don’t want to replace your air conditioner if it’s still working perfectly fine, but if you delay too long you might end up being forced to use a faulty air conditioner while you look for a replacement which can make you endure a lot more heat than you would be comfortable with without a shadow of a doubt. Ideally, you should look to replace your air conditioner about once every five years.
As long as you engage in frequent maintenance and repairs and don’t overuse your air conditioner in such a way that it would break down quicker than it was meant to, five years will be a perfectly achievable goal. Once the five year point has passed, though, you would no longer be able to rely on the air conditioner as much as you used to. Replacing it now would help you avoid the discomfort that often comes with using an AC that is too old and is no longer capable of being repaired all in all.