That's a good idea. I can add that, more and more people are spending more time at home lately and indoor air quality is very important. A sick bit of trivia...all of the dust that has accumulated in your furnace & air conditioner system and the duct-work...is, human and animal skin cells. It's mostly not dirt at all.
It is a huge health benefit to have the duct-work of your home HVAC system cleaned by a good outfit. I've worked alongside of some of these guys, and they do great work. So turn on the air filter, but after you've cleaned the system.