Newark, Delaware, Geothermal Heating & Cooling We're getting the word out in Newark, Delaware: in in the condition the economy is in today, geothermal heating and cooling is definitely the right choice! Ground conditions in Newark are perfect. And our seasonal temperatures? They vary enough in highs and lows to practically guarantee that geothermal heating and cooling will give you the best year-round comfort. You'll love how much a geothermal system can cut your energy expenses, too. The proof? Our Geothermal Savings Calculator. Contact Sinton Air Conditioning & Heating, Inc. today. We've got quite a bit more to tell you about the advantages of geothermal heating and cooling in Newark. Best of all, we install and service WaterFurnace geothermal systems, the finest on the market.