It’s Almost the First of the Month

Time to Replace the Filters

To ensure the continued efficiency of your air conditioner unit you should clean or replace the filters. Dirty or clogged filters inhibit air flow and reduces the system's efficiency. Air that bypasses the filter could possibly carry dirt into the coil and impair the coil's heat-absorbing capacity, causing it to malfunction. The more often you replace your filters the better the air flow you will have.

http://www.i-hvac.net/Indoor-Air-Quality.asp