We have a significant amount of dust in our house. I checked the air vent and found it was clogged with debris, indicating a need for cleaning. Since we moved here we didn't get duct cleaning in a long while. I've spoken with a Duct cleaning service company ( TITAN DUCT SOLUTIONS ), and they're willing to offer us a group rate, we require a few more people to get the group rate, Let me know if anyone wants to join?
Please reach out to me. 
214-898-7133.
Thanks!