I'm a little old lady from St. Petersburg Florida and I normally am not excited about ordering anything on my phone, but the instructions were so easy that I didn't have a problem at all i'm a little old lady from St. Petersburg Florida and I normally am not excited about ordering anything on my phone, but the instructions were so easy that I didn't have a problem at all. I called in a service and they said that I needed a new thermostat but they didn't have a carrier. They gave me some other one and I hate it. , the weather has been extremely cold here in Florida the last 2 1/2 weeks I now am looking forward to receiving my new thermostat that will sync with my carrier unit