My neighbor in the condo adjoining ours contacted PureAir for dryer vent cleaning. Since ours had not been done in the three years we have owned our place, and not knowing what the previous owners had done, I asked him to send the service tech to us for the same service, if the tech was willing. Alex, the tech, was on time and was very personable. He cleaned the dryer vents, including the bird nest in the top in about 20 minutes. He said the vent was pretty clean, so it was just a "maintenance call." In all, the bill was exactly $79. There was no intent to upsell, and I am very happy with the service. I would recommend PureAir for this service and will consider calling them for A/C duct cleaning if I feel I need it.