A1 Heating St. Albert Ltd. recently did some ductwork cleaning for me. Their employees were very professional, and friendly, and eventually they did a good job for me. But, I had to have a bit of a discussion with them first, and then argue with them to get them to do what I wanted them to do, and not what they wanted to do. That is why I lowered their ratings. But, they did do a good job once that was all straightened out.