Getting your air ducts cleaned properly as part of a mold removal project is very important in the whole remediation process. It’s extremely important to not spread mold spores in your air conditioning system any further than where they already are without spreading it throughout your home. If the cleaning is done improperly it will actually increase the growth of mold, not eliminate it.
Make sure to take a look at the equipment that the company plans to use to clean your air ducts. If they remove the vents and push a vacuum hose with a brush on it as far as they can reach, the spores that aren’t sucked up into the hose will fall into the room or remain in the ductwork to be blown into other areas when the AC is used again.
Air duct cleaning like this might not be harmful if there isn’t contamination, but if mold spores are present it will only make matters worse for you. Using proper cleaning equipment that maintains strong vacuum pressure on the entire AC system during the process is necessary.
All of the air ducts come out of the plenum, which is a large box attached to your AC. Correct cleaning entails using a large hose from a high volume, HEPA filtered vacuum to an opening in the plenum. Aside from the one you’re working on, all the other vents are then sealed off before air powered whips or brushes are fed through the air duct all the way to the plenum. Any mold spores, dust and debris that are knocked loose are then sucked up into the hose, filtered and removed from the home.
Also, cleaning the evaporator coils is necessary for a thorough cleaning of the system, because those collect dust over time. That dust and moisture condensing on the coils breed mold and the air blowing over the coils comes out of your vents.
However, many lower-priced air duct cleaning companies don’t have an HVAC license, and without that they are unable to access the plenum or coils on an HVAC system in the state of Maryland DC and Virginia. Without that certification, you have no chance of making sure that the problem is completely eliminated and likely it would be made worse. So spend the money to make sure your air ducts are cleaned properly by a licensed company that has experience in air duct cleaning related to mold remediation – Air Duct Cleaning for Mold Problems