| As a qualified duct cleaning contractor I have | | | | cleaning must include any internal surface in which the |
| discovered that most homeowners feel that they | | | | air moves across, this not only includes the main |
| are very uninformed when it come to the principals | | | | ducts and vents but must also include the |
| and practices of proper air duct cleaning hygiene.Let | | | | conveyance compartment of the furnace/AC, heat |
| me begin by saying that the EPA as well as the | | | | exchanger, AC coils, drain pan, blower, filter housing |
| National air duct cleaners association have stated that | | | | and any air cleaning equipment that might be |
| residential duct cleaning should take no less than | | | | installed.The only acceptable method of proper air |
| between 4 and 8 hours to complete, anything short | | | | duct cleaning is to put the entire system under |
| of that and you are probably not getting a thorough | | | | negative air (vacuum) by means of a powerful |
| job.Consumers are cautioned against duct cleaning | | | | vacuum system that produces no less than 2000 |
| companies that claim to be able to clean your entire | | | | cubic feet per minute of air flow (cfm), each |
| air duct system in a very short period of time and | | | | individual vent shaft should be cleaned using a |
| for an unrealistic low price, in this industry that kind | | | | combination of high pressure air snakes, rotating |
| of service is completely unacceptable and is known | | | | brushes and whips which must be driven by a |
| as the blo-n-go style of duct | | | | compressor that will deliver no less than 175 psi @ |
| cleaning.Remember...anything short of between 4 and | | | | 12-16 cfm.In conclusion, when choosing a qualified air |
| 8 hours and you are probably not getting what | | | | duct cleaning company be sure to ask if they their |
| you're paying for.Many homeowners are also under | | | | technicians and equipment meet the above criteria |
| the impression that the main ducts and primary vents | | | | and always get a few references, it is also |
| are the only components that require cleaning, | | | | recommended that you contact your local better |
| However this is not the case, a thorough duct | | | | business bureau or chamber of commerce. |