ASK Duct Services' central-air centurions do battle with indoor air pollutants by performing thorough duct cleansings. With today's deal, ASK Duct Services will clear out up to nine registers and one return. After a complete inspection of a home's entire system, technicians cut a small access hole near the furnace to insert a 10" hose. This hungry hose is run up and down each duct and attached to a powerful vacuum, which will dislodge and then slurp up debris via high-pressure blasts from an air compressor. After technicians are done, all access holes will be resealed so that thoroughfares remain airtight, like well-burped Tupperware.