I have a friend who owns a HVAC company and he told me that there are two main reasons for a dusty house. The first being an improperly balanced cold air return where too much air is being pulled out of one area of the house and not another. The second is the house has a negative pressure in the HVAC system. This will pull outside air into your house which will be dirtier than your inside air. Your house should have a neutral or slightly positive pressure.
|