The fact that getting your system cleaned just cost $99 is the finest part please get in touch with us if you have any questions or need a free quote. We like hearing from our customers This regular service includes : 1. Every duct from top to the basement 2. Every event from top to the basement 3. When your duct system is being cleaned and natural disinfecting sanitizer will be sprayed into your main line. sanitizer is safe to use around people, animals and food. 4. The cleaning and the examination of the main lines