We bought our heating and air unit from Southwest Air Conditioning and Heating about 15 years ago and we have been using them ever since. They have kept it maintained and running properly for us. They are very nice, courteous people, and they work you in ASAP when you need them. They are very professional people who really know what they are doing. We highly recommend Southwest Air Conditioning and Heating to everyone! They are a good company and very dependable!