Best Ventilation Services in Phoenix AZ

We just had our air ducts cleaned. This is a old home and it's the first time it's been done. The guy from Precision was here almost an hour and did 10 ducts.  Not sure how great of a job he did, but I can tell you he put half of or air vents on upside down and loose. My husband had to get the ladder out and fix them. Which is not optimal with his back. Precision .... not so precise.  Giving them 1 star because it's a Saturday and the guy had a mask on.