It's difficult these days because there have been so many scam artists in the air duct cleaning business that it's difficult to trust several of the companies competing for your business. That being said you might be thinking about cleaning your ducts yourself. Let's take a look at what needs to be completed if you are going to complete your cleaning your self. You will definitely need to be contacting every inch of your ductwork on the interior walls. What tool do you plan on using to reach every inch of the interior walls of your ductwork? Professional cleaners will use some sort of a brush or compressed air tool. The quality duct cleaners will typically use compressed air as opposed to a brush because it is less likely to damage your ducting. If you can figure that out then take a look at cleaning the interior cage of your furnace itself nature seems easy until you start to see the smaller sections that need the power of compressed air to reach. Okay I will admit th...