About Southwest Mechanical Services Your San Antonio Area Premier Geothermal Source You can count on Southwest Mechanical Services for all your WaterFurnace San Antonio geothermal heating and cooling requirements, including... planning assistance. complete comfort system installation. routine service and maintenance. emergency repair. energy-saving advice and consultation. Our fully qualified professional staff is committed to the total satisfaction of customers throughout the San Antonio area. After all, you've picked the best heating and cooling system available. We make sure each system will live up to the expectations of, enhancing your home's conditioning efficiency and helping you cut energy costs. Contact Southwest Mechanical Services today to get a free estimate and a cost savings analysis for your home.