I currently live in an apartment and when our a/c went out, the management company sent these guys out. I called about the broken air conditioner around 2 pm on Monday and I was scheduled for an appointment for Tuesday between 10am-3pm. Alfredo and Benny got here just after 3pm and they were able to fix it in about 20 minutes. They were super friendly. It was miserable waiting for them (it got up to 100 in my house by the time they got here), but they got it fixed up quickly.
The only negative is that I wish they could have given me a more specific timeframe for when they'd be here. Staying in such a hot, hot house for 5 hours just waiting around with two little kids was not pleasant; we would have gone somewhere with air conditioning for the morning if we had known they wouldn't have been here until 3. Even if they had to give me such a big opening, if they could have called 30 minutes before they got here or something, it would have helped. But it's done now and it's fixed, so I'm happy (and mildly cooler).