Oxford, Mississippi, Is Going Geothermal! Air & Heat Service Co. has definitely had a hand in that! We're a heating and cooling contractor who’s expertise is installing and servicing geothermal systems right here in Oxford, Mississippi. Area homeowners trust us for ... our experienced, knowledgeable staff our expert geothermal installation and service capabilities the planning assistance and advice we offer - to help Oxford customers maximize the potential in their geothermal installations If you've been thinking of going geothermal, contact Air & Heat Service Co. today, Oxford's top geothermal contractor. (For a quick overview of the kind savings your family could be getting with a geothermal heating and cooling system, try our simple Geothermal Savings Calculator.)