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.
Clean air ducts are an important component to having a clean home, and therefore it can be a great idea to clean your vent system. For maintenance purposes, we recommend that your air duct and vent system be cleaned every 3-5 years, depending on a variety of factors including your personal preference, number of pets in the household, cleanliness of the household, and other activities that affect indoor air quality, such as smoking inside. Air duct cleaning is also a good idea at the completion of a remodeling project, when moving into a new home, or if you experience increased allergies.
"This a very professional company that came the next day after being contacted late in the day prior. The two guys that came to the door that did the work were well dressed and very courteous. They cleaned my diver vent and it works perfectly. I have their literature and will be calling them when I m ready for duct cleaning. Nice equipment too! Thanks for the good work. Nice not to have scroungy guys showing up at the door. "