About Custom Climate Heating & Air Your Top Geothermal Source in Charleston You can depend on Custom Climate Heating & Air for all your WaterFurnace Charleston geothermal heating and cooling needs, including... planning assistance. complete comfort system installation. routine service and maintenance. emergency repair. energy-saving advice and consultation. Delivering total customer satisfaction is our highest priority in the Charleston area, and our fully trained professional staff will see to that.It's hard not to be satisfied when you choose the best heating and cooling system on the market today. We will see to it that your new system lives up to all of your expectations, helping you to reduce your energy costs and increase your home's conditioning efficiency. Contact Custom Climate Heating & Air today to get a free estimate and a cost savings analysis for your home.