Ever thought about having your ducts cleaned?

This is a before and after taken on site at a job here in Springfield, MO preformed by Queen City Heating and Cooling.

It is an important thing to have done to keep a homes air quality in a healthy state, as you can see in the picture dust builds up most heavily in the returns. You can keep a very clean home and still have a thick unhealthy coating of dust hanging out in your ducts.