I purchased a Wagjag to clean up to 15 ducts for $159 ($9 each for extra vent). Although I left things to the 11th hour, the friendly person who took my call at Custom Comfort allowed me to book an appointment past the expiry date of the coupon (first good sign!) The technician, Niall, called with an estimated arrival time, then arrived on time, was friendly, professional and did a great job. He was very considerate of the pets in the house (another good sign!) He took some time to explain the process and show me the before and after with a tiny camera in the ducts. Niall was knowledgable and able to answer all of my questions. He replaced all the vent covers, and even added a couple of screws to hold the basement ceiling vents in place more safely. Overall, I am very pleased with the cost, the intake process and the actual job that was done, and I will probably use this company again in the future.