We're the Geothermal Source in Concordia! Concordia homeowners in the know turn to Carlson Heating & AC, LLC for all their geothermal heating and cooling needs. They place their confidence in us to give not only the proper installation and service but also the experience to help them maximize the potential from their geothermal systems. Thinking about a geothermal system of your own? Give our nifty little Geothermal Savings Calculator a whirl. Just enter your data and marvel at the results. Then, contact us, the Concordia, Kansas, geothermal professionals at Carlson Heating & AC, LLC.