I had been stunned at the level of debris, dust, pet hair and many others. that arrived away from the two systems, so for my part pretty much worthwhile. I would not say do it all over again on the once-a-year foundation in the least...but perhaps in 5 many http://raymonduqiaq.bloguetechno.com/what-is-a-good-price-for-air-duct-cleaning-No-Further-a-Mystery-21766531