Regular air duct cleaning Perth services for your heating and cooling unit is crucial to keep your system running efficiently and free of dust. Having a spotless duct and vent will also prevent you from various health issues such as allergies and developing asthma. As per experts, the buildup of dust and debris decreases the efficiency of your HVAC units by up to 15-20%. The dust and debris in filthy air ducts can contain a myriad of toxic airborne particles such as dust mites, pest dropping, pet dander, and other harmful allergens. These toxic particles can trigger severe allergies, especially in individuals who are already troubled with chronic health issues.