This wasn't my first time using Southwest Air Conditioning and Heating. I recently had a mechanical problem in my air conditioner unit. They replaced it with a new part. It is working good now. I continue to use their service because they installed a new unit from the previous owner. I would tell a potential customer of theirs they came out the same day I called. Scheduling is easy too. They have a quick response time. They told me they would be here between 1:00 pm and 3:00 pm. They were here at 1:00 pm. They are easy to work with. They are not only professional, but they are friendly as well. They are also respectful of my home. I would recommend Southwest Air Conditioning and Heating to my family and friends.