Air filters improve indoor air quality which helps you stay healthy, making them an essential part of your air conditioning system. Filters in HVAC systems or called Air Handling Unit (AHU) filters function to remove harmful particles from the air as it flows through the system. Various factors affect the filtering ability, such as the material that makes up the filter. We will discuss the main types of filters and the advantages and disadvantages of each. Indoor air quality has never been more important than it is today. With the outside world facing unprecedented environmental challenges and increasing air pollution, maintaining a healthy indoor environment is essential. This is where Filters Air Handling Units (also known as AHUs) come into play