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