Skipping the air filter in your HVAC system may seem like a way to save money, but it is a decision that can have significant impacts. Without an air filter, your HVAC system becomes vulnerable to all sorts of airborne particles like dust, pollen, pet dander, and more. These particles can accumulate inside the system, causing it to work harder and potentially leading to damage or breakdown. It can also affect your air quality leading to potential health problems.