Noisy While Running
One of the goals of air conditioning manufacturing is to develop systems that operate as quietly as possible. So if you start to notice noise coming from the air conditioner, it means something is wrong. One strange noise here or there probably indicates a repair need. However, if you are constantly hearing grinding and clanging, it’s a sign of a system that’s wearing down—and it’s time for a new one.
Increased Energy Bills
An air conditioner that receives routine annual maintenance should be able to retain 95% of its energy efficiency rating throughout its service life. When it comes to the end of that service life, the efficiency will drop, and that will result in a spike in your energy bills. Go ahead and take a look at your cooling costs over the past few years. Is there a steady upward trend? Then you likely have a failing air conditioner.
Frequent, Costly Repairs
It’s pretty rare that an air conditioner will last its entire lifespan without ever requiring repairs. However, there’s a point where an air conditioner requires repairs that are expensive enough to make it no longer worth the investment. Or perhaps your air conditioner has required multiple repairs over the course of a year when it should really only need one repair every couple of years. The general rule of thumb when it comes to repairs is that if your next AC repair is going to cost half of what your system is worth, it makes more economic sense to replace the system.