I live in a region where there is a ton of dust floating around in the air while we are in the warmer months. It’s particularly crazy. It makes my dust sensitivities act up and I end up sneezing, having headaches and sometimes even coughing up a storm. I’ve attempted getting a portable air purifier for our dwelling, however that only helps sometimes. When all this dust gets all over the place it ends up clogging up the air vents of our central HVAC, and the only way to help clear this up is to call our local heating and cooling company and have them send out a certified heat and a/c appliance specialist to do a particularly fantastic ductwork and air vent cleaning… Ductwork cleaning can occasionally be a little high-priced depending on the amount of work that needs to be done. And this is why I typically try to keep up with the ductwork cleaning when I know these bouts of dust are going to begin happening. By doing things this way I can end up saving myself many hundreds of dollars in the long run. The HVAC specialists will not have to do as tough of a task if they catch the ductwork cleaning that needs to be handled right before it gets particularly awful with all the build up. As a matter of fact, it is coming close to the time where I am going to have to reach out to the local HVAC company to do another ductwork cleaning for the season.