Poorly. Got one of those groupons from here (pre-paid service), picked some dates, no one ever contacted us. I spend a good 2 months trying to even find who these folks were (again, we ordered a service on-line, through angies list), I just had an email that no one responded to. Eventually complained to Angie's list, lo and behold, these folks find me and withing a couple days actually do what was asked. Well... Actually... Not quite, we prepaid for a specific model of humidifier (it was advertised as such and we paid a premium) as I didn't want a "generic" one. Turn out that they were "out" of that model, so I just got whatever one was in the van. I figured at this point I was out $400, or else Angie's list would tell me its their fault and they would tell me its Angie's list fault and I would have a great old time arguing with two "virtual" companies while still being out $400 so I just sighed and let them install whatever it was they were installing. On a plus side, the random humidifier they installed works fine! Perhaps I shouldn't be so stressed about the brand and type of humidifier I have? I've grown zen over this situation and look at it as a learning experience. Don't pay good money to a random internet company for a "chance" of service that may or may not happen at some point in the near or far future and may involve the installation of... something. This has likely saved me money in the long run, as I took this opportunity to cancel Angie's list... So I guess.. thanks for that?