There are actually several situations in which you should consider replacing your current air conditioning system. For instance, if you have to call for repairs for your current system repeatedly, your system probably doesn’t have many good years left. And even if the repairs are relatively minor, they’re still costing you money every time you have someone come out.
Rather than continuing to dump money into a system that probably isn’t working all that efficiently to begin with, it makes much more sense to simply invest in a new system now. You’ll start saving right away on your energy bills and you won’t have to worry about whether or not your air conditioner is going to work on any given day.
You many even want to consider replacing an older air conditioning system that’s still working fine because newer models are so much more energy efficient than even those installed 10 years ago. Since you’ll likely have to replace your AC in a few years anyway, you’re better of investing in a new system now so that you can start saving on your energy bills right away.