The Good: They're 24/7. I called them at 10:14 PM, someone was at my house by 10:45 PM. The technician (Scott) was wonderful. Not only did he take care of the issue (which was simply a capacitor), but he also took some time to educate me on how the system functions. I'm a software engineer, so I'm just curious and nosey by definition. Also, I expected outrageous costs for an emergency visit, but the price was really fair. It was actually cheaper than my normal HVAC company who charge quite a bit more on the weekends. Actually, this emergency visit (just the visit, not the parts) was only $30 more than a WEEKDAY visit from my usual company. Unreal.
The Bad: Capacitors are not expensive. If you look around the web, they're usually no more than $25-40 bucks (the one for my unit would have been about $17). Believe me, if I'd had the option to buy my own (no where was open at the time I needed it, and I had already diagnosed it was the capacitor before the tech had arrived), I would have done that in a heart beat. They charged me $170 for one. That is *insane* markup. I understand they have to make money, but I'd already had the unit disassembled, and the bad capacitor free. It took the technician 2 minutes to swap it, and place it back in it's harness. If it wasn't for my house being 80+ degrees and my dogs becoming panting machines, I would have just held out, paid for one in the morning, and been done with it. $170 for a $30 (on average) part... well, it's a rip-off. No other way to say it.
Overall, the price doesn't matter. They made sure my dogs slept comfortably, and that's worth it to me. However, I will be buying a few capacitors just to keep on-hand should this happen again. It's a super easy process, and only takes a few minutes.
So, knowing what I know now, would I use them again? Well, that's hard to say. They're obviously very good at what they do, and you really can't beat 24/7 service. As stated, my technician was fantastic. But, if the markup on a capacitor is already that bad, it scares me to think of what the markup on more expensive parts would be. I guess it would depend on the situation. Night time, nowhere open, and the middle of a North Carolina summer? Yup. I'm calling them. During the week, regular business hours with companies who charge more down-to-earth rates for parts? I'd probably go with someone else.