Just like the name appears to suggest, a cliff vesting schedule will not allow you to vest for a certain specified period. 1  After the time lapses, you immediately become 100% vested just like going off a cliff.
1 A proper home air duct cleaning costs anywhere from $400-$1,000, depending on the size of the system to be cleaned, the type of services offered, the regional climate and the level of use the ventilation system gets, the type of materials inside the ductwork and the amount of contaminants (dust, mold, etc.).hopping for duct cleaning: 1  Some older air ducts may contain asbestos in the insulation, register boots or other areas. 2  Asbestos removal absolutely requires specialized procedures which will add to the total cost, depending on the complexity and extent of the problem.
1 Air duct cleaning cost should fall somewhere between $400 and $1,200. 2  For a single-zone system (one with a single furnace), expect to pay $300 to $600.3  For a two-zone system (one with two furnaces), costs might reach $600 to $1,200. 4  Some companies charge a flat fee for ductwork cleaning, while others have hourly rates.uct Cleaning Prices. Your homeâs HVAC (heating, ventilation, and air conditioning) system relies on a network of metal air ducts to deliver heated and cooled air throughout the building.