During the installation of your AC, your technician needs to make sure that he takes an accurate load calculation, which is a fancy term for how much cooling power you need to keep your home comfortable and energy efficient. It’s an important stage in the process. If your system is too small, then it will likely be inadequate to the task of cooling your entire home. It will strain during high temperatures and may have to work harder all the time just to get by, which can lead to higher energy costs. Alternatively, if your AC is too large, that can also lead to problems. It may short-cycle frequently, which can lead to increased energy costs and additional system wear and tear.
There are some signs that your AC is the wrong size. For example, if you notice that your energy bill has spiked from one month to the next, it could be an indication that your system is working too hard. If your system never shuts off, it could be too small to be able to handle the load. If it constantly turns on and off, it could be too large. Remember, bigger is not always better when it comes to your air conditioner.