Duct cleaning can reduce or eliminate common household contaminants such as:
Dust Mites.They can trigger allergy and asthma attacks. Dust mites are everywhere especially on pillows, blankets, carpets, upholstered furniture, and stuff toys. Construction and drywall dust collected in your ducts can also cause irritation allergies.
Mold. Bathrooms are a common source of mold. Humidity from showers can cause moisture problems, which will lead to mold growth. Mold can cause allergic reactions, asthma, and other respiratory problems.
Pet Dander and Hair. Pet dander can get trapped in the air conditioning coil, due to poor filtration, and cause algae growth or bad odors. In addition it can clog-up the coil and cause it to freeze.
Odors. Odors can be generated from air conditioning coils, dirty filters or dirty ducts. Poor ventilation can also cause bad odors. Common room freshners neutralize the odors but do not eliminate them at the source.