Throughout the last couple of years, our wifey & I have noticed a lot of dust on the interior surfaces in our home. At first I thought the problem was not dusting enough. I realized that was not the issue when our wifey started dusting everyday & the people I was with and I still had dust & dirt on all of the surfaces in our home. I learn about this type of problem online. A lot of people commanded the issue could be with our HVAC duct. When there is a buildup of dust, dirt, & debris inside out the HVAC duct, every time the oil furnace or a/c runs, the dust & debris is spread all over the house. I contacted a local Heating & Air Conditioning contractor that handles this type of service on HVAC duct & Heating & Air Conditioning systems. The service contractor sent 2 professionals to our up-to-date home the next afternoon. They used a camera to look inside of the HVAC duct. They took about a dozen pictures of the interior angles of the HVAC duct. It was truly simple to see all of the dust & dirt that had built up inside of the duct toil over the last 10 years. My wifey & I never expected to see such a mess inside of our home. After the service contractor finished with all of the detailed work, they took after pictures to show us how things had changed. The service contractor entirely got rid of all that dust & dirt & now our family & I are breathing much more easily. We will easily have this service performed yearly, since the people I was with and I believe how well it works.