I used Crawford service from Grand Prairie after purchasing a Lenox AC/hearing system at Costco last winter. Right from the start there were problems. The first night I had the system we did not have heat so I called Crawford (this was on a Sunday) and they tried talking me into a weekday appointment. I was insistent that it had to be that day, which they finally agreed on. They showed up and told me the installation was done wrong, which he had to fix. And he did within a few hours. Fast forward to hot weather a few months later, And one night I realized I had no AC. So I Put the thermostat to 70 degrees for overnight and it didn't move 1 degree cooler overnight. Nothing but wasting electricity. I called Crawford and they sent out a repairman who said I was totally out of freon. It was leaking from several places so they had to replace the entire coil system. First the tried telling me they couldn't get the part, but when I said you're still selling new units, I want one of those and I was real insistent on it, what a miracle - they managed to find the part. After several confusing phone calls setting up the appointment, It was finally replaced. So Last night late (November) we had a warm night and I clicked on the AC at 11 PM, set it to 70 while it was reading 73. Several times during the night I checked it, finally at 5am I shut it off, it was still reading 73. I would say, even though you get the better prices via Costco, I would not use this Lenox system. I know they will fight me on a repair, since that's their job to do in saving money and do less repairs on warranty. This system is junk. Don't be fooled by the Coscto sales. While Costco is great, this system is junk.