When we talk about air conditioning health, whether it’s repairs or maintenance, we tend to focus on things that only professionals can do for your system. That does cover most things that can help keep your air conditioner healthy. However, there is at least one way that you can personally ensure that your AC system stays in good operating condition. Read on to find out more about your air conditioner’s air filter, why it needs to be changed on a regular basis, and how you can do it.