It's that time of year again. Especially down here on the coast, you should count on the fact that your HVAC unit is going to run a great deal. Throughout the year, although you haven't been operating your unit for A/C, you more than likely have used it for heating purposes. During use, dirt and debris builds up on parts of your system, which if left unchecked will cause your system to work harder to achieve the same results. Check out this article from Angie's List for guidance on having your HVAC serviced.