Check out Keystone Duct Cleaning Keystone Duct Cleaning the proffesionals who did the work at our house were both thorough and polite. My husband and I both agreed that the difference was completely unexpected and dramatic; there was a large decrease in dust throughout the house and all of our allergies too. My spend thrift mom got her ducts cleaned and told me she wished she had done it years ago. That's unherd of for her. I have since decided to make it my mission to tell every one about Keystone Duct Cleaning. They also cleaned my dryer vents and sanitized all my ducts. Their number is on their site, www.KeystoneAirCleaners.com, so check'em out.