Northport, Michigan, Geothermal Heating & Cooling We're spreading the word throughout Northport, Michigan: in today's economy, geothermal heating and cooling is definitely the right choice! Ground conditions in Northport are just right. How about our seasonal temperatures? They change enough in highs and lows to almost guarantee that geothermal heating and cooling will provide the best year-round comfort. You'll also enjoy how much a geothermal system can cut your energy expenses, too. The proof? Take a look at our Geothermal Savings Calculator. Contact D&W Mechanical today. We've got quite a bit more to tell you about the advantages of geothermal heating and cooling in Northport. Best of all, we install and service WaterFurnace geothermal systems, the finest on the market.