Start the AC season off with a clean air filter! Replacing your air filters ensures cleaner air circulating throughout your home as well as a more effective AC unit. Clean air filters remove air pollutants and protect the HVAC unit by keeping it clean and unclogged. The rate at which an air filter should be changed depends on many different factors. It is recommended at minimum to change your air filter every 3 months, but you should check your filter monthly and if you notice your filter is dirty it should be changed immediately. If you have pets you should be changing your air filter much more frequently, as pet dander can often clog air filters. Other factors to consider are frequency of operation and the air quality of the home. When you are changing your air filter it is crucial you purchase a replacement air filter that is the correct size for your unit, and you should also consider the MERV (Minimum Efficiency Reporting Value). The MERV is a numerical value given to filters in order to identify its filtering abilities. A larger MERV number means better filtration, or ability to capture and hold dirt and dust. A great tip is to keep a box of replacement air filters at your house for easy accessibility when needed. PexSupply.com offers a variety of air filters by several premium brands, including DiversiTech, Honeywell, Lennox, Trion and White Rodgers. So put a note on your calendar or a reminder on your phone, and check your air filters, trust me it will be a breath of fresh air!