I did the $49.00 Groupon they just left. Basiclly all they did was stick a shop vac type hose into the vent supply and one return. I also had the dryer done. the person in charge pointed to the main return inside my humidifier and said it needed cleaning. I explained that I was in facility maintaince and would deal with it myself. After that they finished the vac and didn’t try any other sales pitch. I should have read the reviews before I bought this wast of money and time.
I was with you until you said avoid steaming cleaning or moisture, there is no way you can remove mold or any other type of biological without moisture. The best way to do this is in fact with a steamer using a commercial disinfectant and a non reactive odor remover so your home smells refreshed and not like a hospital . This is directly contradictory to your article.
There are a few signs to watch out for to catch them in time. For one, if your breathing starts acting up or you start coughing or sneezing, there is probably some buildup in the vents. If you suspect mold or start hearing scritches in your pipes, there's a good chance you have enough dirt for bigger problems to unfold. You should clean your ducts and vents every few months just to be safe. This is even more important and should be done more frequently if you live in a very humid or dusty climate.
The Canada Mortgage and Housing Corporation (CMHC), a government agency, conducted a study in the 1990s to investigate two claims: Duct cleaning makes indoor air healthier; and it reduces energy costs by improving airflow. After testing 33 homes in Montreal before and after duct cleaning, the study found that there was no significant improvement in air quality and that duct cleaning alone did not improve airflow or energy efficiency. In some cases, measured particle levels actually increased immediately after a cleaning. In other cases, particle levels decreased immediately after cleaning but returned to previous levels within weeks.
I called the company and John answered. We set a time for him to come over that was convenient for us both. He came exactly on time and went right to work. He removed all of the vent covers, including some screens that were over the vents that I had no idea were there. He washed all of the vent covers with soap and water and then started to vacuum all of the ducts, doing a complete and thorough job. He was extremely friendly, professional and worked quickly and thoroughly. He even checked the dryer vent exhaust on the roof to make sure it was clear. After he finished vacuuming the ducts, he sanitized them and then reattached all of the vents.
This company upcharged me $200 for a service we had already paid for.  Also the girl I spoke with on the phone was extremely rude!!  Come to find out that person is the owner!  She yelled at me each time I asked a question pertaining to how they scammed me for a service I already paid for.   Advertising all over great deals on Groupon and everywhere else do not do it they get in your house they upcharge you they do all these services in a half an hour and say they're done!!!!!!!
Manufacturers of products marketed to coat and encapsulate duct surfaces claim that these sealants prevent dust and dirt particles inside air ducts from being released into the air. As with biocides, a sealant is often applied by spraying it into the operating duct system. Laboratory tests indicate that materials introduced in this manner tend not to completely coat the duct surface. Application of sealants may also affect the acoustical (noise) and fire retarding characteristics of fiber glass lined or constructed ducts and may invalidate the manufacturer's warranty.
If not properly installed, maintained and operated, these components may become contaminated with particles of dust, pollen or other debris. If moisture is present, the potential for microbiological growth (e.g., mold) is increased and spores from such growth may be released into the home's living space. Some of these contaminants may cause allergic reactions or other symptoms in people if they are exposed to them. If you decide to have your heating and cooling system cleaned, it is important to make sure the service provider agrees to clean all components of the system and is qualified to do so. Failure to clean a component of a contaminated system can result in re-contamination of the entire system, thus negating any potential benefits. Methods of duct cleaning vary, although standards have been established by industry associations concerned with air duct cleaning. Typically, a service provider will use specialized tools to dislodge dirt and other debris in ducts, then vacuum them out with a high-powered vacuum cleaner.
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