Sears would not repair my Carrier central air conditioner under warranty on a Sunday, but I was able to hire Atomic Air, LLC - Las Vegas Valley & Henderson Cooling & Heating to fix it. The temperature here on Sunday was 112 degrees so getting the system repaired quickly became a priority. Atomic Air responded the same day and quickly diagnosed the problem plus they had the Carrier replacement parts on their truck and were able to resolve the problem within a few hours of the call for service.