We have been using Southwest Air Conditioning and Heating for about the last 20 years and we have never had any problem with their service. They are always willing to come out quickly when we need them and they have always been able to fix whatever needs fixing. They also do the seasonal preventative maintenance work for us, and they have kept the system running properly. They are nice people, and very professional. They do what they are supposed to do and we highly recommend them to everyone! Southwest Air Conditioning and Heating is an excellent company!