Not especially well. Provider was called to request service on a whole-house backup generator, message left. Provider returned the call and asked a number of relevant questions about the symptoms the generator was exhibiting. The first question was "Who installed it?". When told that we had installed it ourselves, he questioned if the installation had been inspected by the County (it was) and gave us a short lecture about how most self installs are not done properly and if that were the case here, the warranty would not likely be honored. We assured him that the install was done correctly and had passed inspection by the County inspectors. The second question was about the symptoms the generator was exhibiting. When we explained the exact details, he offered that the generator control panel may have gotten wet during a rainstorm and if so, that would not be covered by warranty. We understood. When we discussed when the service call might be scheduled, we mentioned that since the generator was supporting among other things, a residential elevator and three (3) CPAP machines and an oxygen generator, and that service ASAP would be appreciated, he noted that the generator was not approved for life-safety support and should not be being used for that. Our reply was that we did not consider this a Life-safety support application and that we understood the legal (Product Liability) implications of that statement. Mr. Jackson explained that he did not have have his service schedule with him, but his office staff would contact us about a mutually convenient time. The next morning, a very pleasant woman contacted us and explained that the first available time would be more than 7 days out because of Mr. Jackson's other business and personal commitments. We declined the appointment, called the Generator factory for another recommendation, and got an appointment the next business day with another provider. The factory also advised us that some of the questions we were asked were inappropriate and should have been a red flag to locate another provider. The new provider quickly diagnosed the problem(s) and repairs were made under warranty.