Well spring is here and it is time to make sure your AC system is ready for the summer. You can call us and we can come out and service it for you, however if your system is less than 15 years old in most cases you can do it yourself. Honestly in a lot of cases your filter needs to be changed more often that you would want to pay someone to do. Many filters are simply to small and need to be replaced during the summer as much as once every 6 weeks unless you don't mind making SCE more money. Another common mistake is buying an allergen filer with a high MERV rating which is okay if you have multiple filters or one large one, but if your filter is too small it can create more problems with the proper function of your AC. Also do not be fooled by the 90 days filters say they last. The higher the MERV rating, the more it can filter and the dirtier it gets, faster.