After major renovations in my home, duct cleaning became imperative. I had it done a few years ago, but never in the detailed manner performed by the Canaduct technician. Two runs of ductwork in the crawlspace had never been done. Looking through the cut-outs with a flashlight revealed a considerable volume of dust, debris and a bucket lid. Removing the furnace doors revealed a heavy layer of plaster dust, so I had him clean both the furnace and AC coils. The humidifier had a considerable build-up of calcium and rust and the filter needed replacement. Paul, the technician, took care of it all, then showed me the results afterwards. He was very professional, worked diligently and earned his coffee and this review. As well, the cost was reasonable. Well done.