Kerrville Looks to Us for Geothermal Heating & Cooling! We're Southwest Mechanical Services. And we're known throughout Kerrville, Texas, for our geothermal heating and cooling expertise. Homeowners look to us for ... first-class geothermal system installation and service experienced, highly trained personnel who know every aspect of geothermal heating and cooling - and know how to help you understand geothermal systems from one of the industry's most established names - WaterFurnace advice on how to maximize the potential from their geothermal heating and cooling installation Obviously, a pivotal reason people turn to us in the first place is for the savings they can realize 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 Mechanical Services. We'll show you more of what makes geothermal systems the premium choice for year-round heating and cooling comfort in Kerrville.