On the other hand there are many more air duct cleaning companies that will properly clean the air system and air ducts and use commercial negative air duct cleaning vacuums with at least 2,000 CFMs of vacuum power and utilize proper agitating tools to move the contaminates within the duct work to be captured with HEPA filters and contained by the air duct cleaning vacuum equipment.
Nowadays most homes have a central air system with connecting air ducting to move conditioned indoor air throughout the home. Over time, the air system and the connecting air ducting will accumulate dust and other contaminates, which can cause circulation of dirty and polluted indoor air through your home. Out-of-sight and out-of-mind health items that we don’t think much about are dirty air system and air ducts which could be the unhealthiest item in our home.
"Over Labor Day weekend at 8pm our A/C system went down -- permanently! Our normal AC company was not working and so we went through the phone book and found Waychoff's! It was unbelievable that one of your employees came to our home at 10PM at no extra charge! On Labor Day the Waychoff's team installed the Trane. They were professional, knowledgeable, efficient, courteous, humorous and extremely likeable. They even brought in cardboard boxes in order to keep my carpet clean. Installation went so fast! They really earned their money, and I assure you that they are not wasting yours. They educated us about the A/C Systems and SEER score. They were great teacher and we learned a lot that day. They assisted us in financing and we were surprised at the monthly payments which were much lower than we expected. The rep from the finance company called us and he was just pleasant and professional as the crew. Later in the week they returned with our 2 rebate forms already filled out and ready to sign! WOW! that kind of service is that! All in all, we are very happy with everything and this house is COLD! We are happy to endorse Waychoff's!"
Make sure that the company has the proper equipment and enough HEPA filtered vacuum power (2,000 CFMs or more), to properly clean your air ducts. Be weary of companies that use small vacuum units that have a small rotating brush on the end of a small vacuum hose with a typical airflow of 150 to 300 cfm or less. Proper air duct cleaning vacuums are negative air machines with 2,000 CFMs have 8 inch to 14 inch or larger, vacuum hoses to capture large quantities of dust and debris.