Using Casteel is the best decision I've made for something like this. We had them replace our furnace & AC unit at the same time. Everyone that I dealt with from the operators, the techs, the salesman, and the final installers with courteous, friendly helpful, considerate, etc, I could go on about them for a long time. I am impressed with the entire organization. They were out two days ago to do the work and I've been bragging about them to all of my co-workers. Joe and Brian, the installers were great. They walked me through everything they did, explained everything very thoroughly. Great Team. It's obvious the employees are given a good example that comes from the top. Ray S.75827.