Limestone County, Alabama, Geothermal Heating & Cooling We're getting the word out in Limestone County, Alabama: in in the condition the economy is in today, geothermal heating and cooling is absolutely the smart way to go! Ground conditions in Limestone County are just right. And our seasonal temperatures? They change enough in highs and lows to almost guarantee that geothermal heating and cooling will offer the best year-round satisfaction. You'll love how much a geothermal system can decrease your energy expenses, too. The proof? Take a look at our Geothermal Savings Calculator. Contact Southern Solar Systems today. We've got a lot more to tell you about the advantages of geothermal heating and cooling in Limestone County. Another great thing, we install and service WaterFurnace geothermal systems, the finest on the market.