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 Larger houses will require wider coverage of air ducts, which can take more time cleaning and would therefore cost more. 2  On average, a complete duct cleaning in a home can range anywhere from $200 to as much as $800. 3  Some companies can charge on the amount of vents in a home. For example, some may charge $15 to $30 per vent. 2  AirDuctDenver.com is a company that provides air duct cleaning services in the state of Colorado. 3  This company offers a flat rate for servicing a whole house as their special offer.