Air conditioner air filters have changed a lot over the years. But did you know that an air filter is only supposed to filter out large dust particles and debris. Filter manufacturers that promise to remove allergens and pollen are not mentioning that as that filter fills up the airflow goes down. Using a cheapo fiberglass filter is the way to go. It will give you more air flow and cut down on back pressure that can be bad for your equipment. Sun Air Services in Apache Junction recommends changing your filter every 30 days and use a filter you can see through.
