About 10 years ago the EPA did a nine home study on indoor air pollution. Surface treatments, such as biocides or encapsulants, however, were not part of the study. Furthermore, they were primarily focused on mold (most houses don’t have a mold problem) and the complete elimination of it. With that in mind, you can see how they determined that $400 – $1,000 should be the going rate for air duct cleaning.
Now, fast forward 10 years, add an EPA approved surfactant or biocide to the equation along with market competition and presto; you have lower prices, a more thorough method of air duct cleaning and LOWER PRICES!
Here is a rather interesting graph of the nine homes which the EPA tested:
I think it is rather interesting that the EPA has never done a follow-up. I am sure that if they would, they would conclude that by simply applying a sanitizer the levels would decrease significanttly and so would the price!
