It's always a good idea to have your AC system checked and serviced once a year. We can recharge or repair your A/C system as needed, like so many other systems, this system has become high-tech. Even though you only use your A\C system when it's hot out, it actually runs behind the scene all year. There are a number of different kinds of oil and other chemicals that go to your specific system, so it is never a good idea to just use over the counter products. This can lead to more damage.