I have been a customer of Southwest Air Conditioning and Heating for over 12 years now, so I guess that pretty much says it all. The last time they came out, it was to perform the routine seasonal maintenance on my unit, and to change the filter. As always, they were prompt, and showed up as scheduled. Their men are always polite and courteous. They never leave any kind of mess behind. They always do a professional job, and I have never had any kind of problems. After all these years, I feel comfortable enough about Southwest Air Conditioning and Heating to have recommended them to other people I know. Like I said before, 12 years with them kind of speaks for itself.