The Geothermal Name to Trust in Philadelphia Forgive the over confidence, but that would be us: Mid South Air Conditioning, Inc.! Philadelphia, Mississippi, residents have been turning to us to meet their geothermal heating and cooling needs for years, now. We'd like to earn your assurance, as well. If you've been wanting to "go geothermal" but have been holding off, you can definitely trust us on this: given today's shifting economy, there's never been a better time to learn more about the savings a geothermal heating and cooling system can provide. Want proof? Do a little simple math with our Geothermal Savings Calculator. Then contact Mid South Air Conditioning, Inc. for the top of the line geothermal system installation and service in Philadelphia - and beyond! Oh ... and talk about trust: We install geothermal heating and cooling systems by WaterFurnace. That's a name that resounds in the geothermal industry.