The Geothermal Name to Trust in Sullivans Island Forgive the over confidence, but that would be us: Custom Climate Heating & Air! Sullivans Island, South Carolina, residents have been looking to us to satisfy their geothermal heating and cooling needs for a number of years, now. We'd like to gain your trust, as well. If you've been thinking of “going geothermal” but have put it off, you can certainly trust us on this: given today's unstable economy, there's never been a better time to learn more about the savings a geothermal heating and cooling system can offer. Want proof? Do a little simple math with our Geothermal Savings Calculator. Then contact Custom Climate Heating & Air for the very best geothermal system installation and service in Sullivans Island - and beyond! Oh ... and talk about trust: We install geothermal heating and cooling systems by WaterFurnace. That's a brand that resonates in the geothermal industry.