We purchased a Groupon for vent cleaning from another company. They came to the house and told us we had a lot of mold in the vents and could not do the cleaning without first removing the mold. They tried charging us for that and all these extra things for a total of $1100. Our landlord wanted a second opinion. I had Lance come out and while the vents were very dirty, he said there was only a very small area of mold, which he took care of, and sanitized all the vents and cleaned them for us. All for $188! I'm so glad we had him out. He did not try and sell us any extra services. Our air is already so much fresher!