This allows access to the entire trunk lines where the debris has been pushed. This process, coupled with the negative pressure created by the vacuum, is very effective in removing any buildup created over years.Īfter the preceding process is completed on both the supply and return sides on each floor we then repeat the process in the trunk lines via 1″ diameter holes created in key areas. This line is equipped with tools equipped with a ball attached with whips which thrash around dislodging any debris and blowing toward the trunk line. Many registers/vents may not be removed due to excessive coats of paint, caulk or simply part of the woodwork.Īn air compressor line providing 175 pounds per square inch (psi) is inserted in each branch line. The air filter is then removed and replaced heavy cardboard which is placed firmly in the filter cabinet to help isolate the vacuum power on either side of the air conveyance system (supply and demand) as it is being cleaned.Īll registers/vents will then be inspected for removal and then closed with the existing damper, plastic tape or cardboard cut to size. The vacuum can be placed near a door or window closest to the furnace and is operated by a 20 horse power engine capable of removing dust, construction debris, and whatever else may find its way into the air conveyance system. An 8″ diameter access hole is made in the supply and return trunk lines to mount the vacuum hose which is connected to a 350 pound vacuum located outside the home.
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