**Not a paid promoter** This is not a sexy service to spend money on, but I believe Ductworks is the right company for the job if it needs to be done. Sure you can pay about "half" as much from a company advertising in the monthly community coupon mailers, but they will likely not be as thorough and will hit you with change orders for additional vents, return air ducts, and the blower on the furnace. Called Ductworks and the schedulers were polite and educated on the service being provided. Two days later, Luis knocked on my door at exactly the scheduled time to the minute. Luis was very polite and knowledgable about the task at hand. The ducting, including 20 vents in a ~ 2700 square foot house, was cleaned in about 8 hrs. I highly recommend this company to you, and will be recommending them to my friends and family.