Preparing for air duct cleaning can be a time consuming process for you because you would want to do all that you can to ensure that the job gets done right once all has been said and is now out of the way. A lot of items will need to be ticked off of your checklist while you are engaging in the prep process, and many of these items would be surprisingly difficult to complete if you have never done something of this sort before.
If there is one thing that most people tend to struggle with when they are getting their house ready for a duct cleaning, it is counting the vents. The reason behind this is that there are likely going to be a lot more vents in your home than you are aware of. After all, the purpose of these vents is to allow you to feel comfortable without becoming aware of the air that is currently coming out of them, but regardless of that you should complete the counting process quickly before you buy now so that you can be sure that your purchase is more worth it than might have been the case otherwise.
All of the vents in your home would be placed within your walls, but there will also be some on the floor and ceiling. Make sure that you take all of the items that are on the floor, ceiling and walls off of them so that you can get a better look at what lies underneath. That way it would completely impossible for you to miss any of your vents and you can subsequently get a better experience out of it.