According to the EPA knowledge about the detriments and benefits of duct cleaning is still in early stages. Duct cleaning involves cleaning the paths through which forced air travels, the components of a heating and air conditioning system and all registers, return ducts, grills, etc. Duct cleaning should be done when you can visibly see a build up of mold on the components of your HVAC system, when dust is forced through air vents when the system turns on, or if your ducts are infested with vermin. Choose a professional with experience to take care of this process for you so you can be certain that the right tools (possibly including a chemical biocide to prevent further mold build up) are used to ensure proper and long lasting cleaning.
Being well educated before the project begins can save you stress and give you peace of mind.
Find the RE/MAX of Reading Preferred Vendors who specialize in Duct Cleaning below.