San Angelo Looks to Us for Geothermal Heating & Cooling! We're Southwest Air Conditioning. And we're known throughout San Angelo, Texas, for our geothermal heating and cooling knowledge. People turn to us for ... superior geothermal system installation and service qualified, highly trained personnel who know every detail of geothermal heating and cooling - and know how to help you understand geothermal systems from one of the industry's most trusted names - WaterFurnace recommendation on how to get the most from their geothermal heating and cooling installation Obviously, a major reason people turn to us in the first place is for the savings they can appreciate on their energy bills with a geothermal system. Want a snap shot? Give our Geothermal Savings Calculator a go. Then push forward with the next step and contact Southwest Air Conditioning. We'll walk you through more of what makes geothermal systems the best choice for year-round heating and cooling comfort in San Angelo.