Heating and cooling systems technicians are highly-trained professionals who know how to thoroughly clean vent ducts. While it is possible to do this yourself, it is generally not recommended. Heating and cooling companies have the necessary tools and devices to do the task right, and they also back their work with a warranty, in case something goes wrong. If you do decide to clean your ductworks yourself, make sure you use a HEPA filter when installing a new filter. This will help to remove any particles that could potentially be harmful to your health. Make sure you turn off the power to your HVAC system before starting the cleaning process. Once you have finished cleaning, you can then turn the power back on, and savor clean, fresh air in your home. Because my knees hurt, I prefer to have an HVAC professional come out; if I am bent over for too long, I hurt, and my back tends to ache a lot when bending over too long. I’ve used this heating and cooling systems supplier near me before to clean out my ducts, and they did a great job. They had it done in a single afternoon. I felt so much better once they were clean, as I have flu symptoms due to dust, and before they were cleaned I was suffering from bad sneezing attacks. Installing the HEPA filter made a sizable difference, and I will always use a HEPA filter from now on. I don’t know if I will need to have them come back and clean the ducts for a while. I should be all set now.