Is a Truck-mounted vacuum better than a Portable one?
While contractors with truck-mounted vacuums will usually boast about the power of their units, there are numerous disadvantages to using them. Truck-mounted or exterior vacuum systems create what could be called an ‘Open System’. In an open system, warm air in the winter time and cool air in the summer is drawn out of the house and due to the negative air pressure placed on the home this air must be displaced by the dust and pollen laden air from outside. This unfiltered air is then drawn back into the ductwork. Not only can this method drastically change the temperature in the home, it is also counter-productive when you are trying to increase indoor air quality. Truck-mounted or exterior vacuum systems use 8 to 12 inch vacuum hoses that run through a doorway or window and through the house to connect up to the furnace. Not only are they an obstruction in your home, these dirty hoses can scratch up furniture and woodwork. They also create the gap to the outdoors that allows the bugs,
