After reading that a house my size should have taken 2-3 hours to clean the air ducts, I was surprised that it only took 1 hour to do. We have lived in the house for 27 years and had dogs all this time. I would have thought that more dirt and hair would have been removed from the air ducts. When the techs were finished he showed me the bags in the vacuum machine and there was only a large handful of debris. This was quite a bit of money for such little dirt removal.
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