Here are some tips from our expert, Gino Merenda, on what to look out for when an air duct company comes to your home to clean your air ducts.
1) Make sure the system is running while setting up is in place and the HVAC system needs to be turned off either by the thermostat, furnace switch or breaker.
2) There has to be a minimum of two 8" access holes to be cut into the main supply and return ductwork in the furnace room.
3) All vents, supply and return needs to be sealed to maximize the suction power and to minimize dust contamination throughout the environment.
4) ALL vents must be removed for proper cleaning, especially the returns on the lower part of the wall.
5) Fan blades, top of A/C coil require cleaning.
6) 1" holes in the main duct must be made in order to send air pressured agitating tools to remove dust and debris. Without this procedure, there is no other way of cleaning the system.
7) Running the system after it has been cleaned while it is under suction is required to assure that there isn't any dust or debris lodged in the heat exchanger or air conditioning coil.
Gino also suggests making sure the company you call is certified by the National Air Duct Cleaners Association.