I had someone out to clean my ducts last weekend. He took a blue bag up in my attic. He came back down in just a few minutes and said I had mold and he even showed me a picture of something saying it was mold but I couldn’t really tell. I refused his service to take care of the mold. He went back up in the attic for a little while and then came down. I never heard any sounds that he was actually up there doing anything. How do I know if he actually cleaned the air ducts?
Pay particular attention to cooling coils, which are designed to remove water from the air and can be a major source of moisture contamination of the system that can lead to mold growth. Make sure the condensate pan drains properly. The presence of substantial standing water and/or debris indicates a problem requiring immediate attention. Check any insulation near cooling coils for wet spots.
I bought a Groupon for an air duct cleaning and deodorizing for $59. I read all of the fine print and it said "unlimited ducts." When they came to perform the service they said it would cost an additional $200 to cover the entire house. I ended up canceling the whole service and the guy who was there do to the work said he is leaving the company because of issues like this. He said 25% of their customers end up canceling when they arrive to do the service because of the dishonest advertising. Later the same day, the manager called me to discuss why I canceled the service. I told her the Groupon was dishonest and intentionally misleading and her response was, "I don't work on the advertising." I told her that as the manager she has some responsibility for what is advertised about the company and she said, "I just work here, I don't own the company." So apparently the management has no responsibilities at Best Air DC, perhaps that is part of the problem. I will never use them again and hope no one else does either. Save your money!
The best way to ensure indoor air quality and avoid replacing your A/C system is to clean your ducts. Duct cleaning can be as simple as dusting out the vents or something more in-depth like having a professional look through them. While it sounds daunting, what you gain in keeping them clean is much better than the initial cost. Need help finding a duct cleaning service near you? Enter your zip code to be connected today to local air duct cleaning companies.
In addition, the service provider may propose applying chemical biocides, designed to kill microbiological contaminants, to the inside of the duct work and to other system components. Some service providers may also suggest applying chemical treatments (sealants or other encapsulants) to encapsulate or cover the inside surfaces of the air ducts and equipment housings because they believe it will control mold growth or prevent the release of dirt particles or fibers from ducts. These practices have yet to be fully researched and you should be fully informed before deciding to permit the use of biocides or chemical treatments in your air ducts. They should only be applied, if at all, after the system has been properly cleaned of all visible dust or debris.
A thorough visual inspection is the best way to verify the cleanliness of your heating and cooling system. Some service providers use remote photography to document conditions inside ducts. All portions of the system should be visibly clean; you should not be able to detect any debris with the naked eye. Show the Post-Cleaning Consumer Checklist to the service provider before the work begins. After completing the job, ask the service provider to show you each component of your system to verify that the job was performed satisfactorily.
Duct cleaning has never been shown to actually prevent health problems. Neither do studies conclusively demonstrate that particle (e.g., dust) levels in homes increase because of dirty air ducts. This is because much of the dirt in air ducts adheres to duct surfaces and does not necessarily enter the living space. It is important to keep in mind that dirty air ducts are only one of many possible sources of particles that are present in homes. Pollutants that enter the home both from outdoors and indoor activities such as cooking, cleaning, smoking, or just moving around can cause greater exposure to contaminants than dirty air ducts. Moreover, there is no evidence that a light amount of household dust or other particulate matter in air ducts poses any risk to your health.