North Central Kansas, Kansas, Is Going Geothermal! Carlson Heating & AC, LLC has absolutely had a hand in that! We're a heating and cooling contractor who’s expertise is installing and servicing geothermal systems right here in North Central Kansas, Kansas. Area residents place their confidence in us for ... our experienced, highly educated staff our proficient geothermal installation and service capabilities the planning assistance and advice we provide - to help North Central Kansas customers get the most from their geothermal installations If you've been considering going geothermal, contact Carlson Heating & AC, LLC today, North Central Kansas's best geothermal contractor. (For a quick overview of the kind savings your family could experience with a geothermal heating and cooling system, try our easy Geothermal Savings Calculator.)