We're Lambertville's Primary Geothermal Contractor! Lambertville, New Jersey, residents have all sorts of reasons for desiring a geothermal heating and cooling system: remarkable year-round comfort – no matter how crazy the seasonal variations smooth operating performance energy efficiency (They’d be hard-pressed to find a more "green," more natural way to heat and cool their homes!) significant – sometimes amazing – savings on their energy bills noteworthy installation and maintenance from Energy Smarts Mechanical, Lambertville's geothermal experts. Learn more about what a geothermal heating and cooling system can do to increase your family's comfort. Check out our Geothermal Savings Calculator. Then contact Energy Smarts Mechanical. We sell, install, and maintain WaterFurnace geothermal systems, the finest available today.