Affordable Carpet Cleaning Services in Knoxville TN. Locally owned by Rocky Hall of Knoxville, our professional carpet cleaners also offer upholstery cleaning, rug cleaning & air duct vent cleaning. Licensed and Insured with an A+ accredited BBB rating. We've been cleaning carpets in Knoxville since 1997. Advantages of Drycon's carpet cleaning: NO WATER SATURATION - DRIES IN 30 MINUTES - BIODEGRADABLE GREEN CLEANING SOLUTION - SAFE FOR PETS & CHILDREN - LICENSED & INSURED.