disclaimer: I don't write internet review often, this is probably my 2nd one ever, and i am trying to be impartial.
pros:
1. The technician called the day before to confirm the appointment, and on the day, called 1/2 hour before.
2. After the initial cleaning, I called to let them know that he had missed some vents and they came back the day of my call.
3. both guys showed up on time and polite.
background: There is a main duct that is connected to the furnace and off of that are ducts that go into each room of the house that is covered by a vent(i call vent duct).
cons:
1. the equipment used. a portable vaccum is used to attach to the main duct. I find on the internet other company might be using truck mounted vacuum. This portable one might be okay if they agitate the dust properly. I asked the first guy to brush the vent duct, with an agitator like the one he used for the main duct, but he said that the supply duct is normally not dirty(return duct is), that(agitation) wasn’t necessary, and the vaccum on the main duct is sufficient to suck up the dirt.
After seeing some internet video (some other companies use a vaccum with long hoses and a brush head), I called and asked them to clean the vent ducts again and they used the snake brush to clean them. I am sure it is still dirty deep in my vent duct where the 4-5' snake brush (the second guy used) cannot reach, because the snake brush stir up plenty of dust where it can reach.
2. hook up the consumers with low price coupon. got a $49.95 full house special in the clipper magazine, shows up and estimate is $205 because i have 3 mains and 2 returns. but of course, they have to make money.
3. I think scare tactic was used on me, because the first guys mentioned the mold problem in my duct and i need sanitization(extra charge of course). but then internet search seems to suggest mold is part of life, unlikely to avoid even after the hundreds of dollars in treatment, besides the chemicals the treatment uses are questionable to human health. i am glad i did not do that, open the window is the way to go for me.
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