Geothermal is Big in Islip! Countless residents in Islip, New York are loving their geothermal heating and cooling system.We find it difficult to believe that anyone wouldn't? Because of our seasonal temperature extremes and near perfect ground conditions, our geothermal systems, are an excellent choice for year-round heating and cooling comfort. So, you still aren't satisfied? See how much you can save in Islip with your own geothermal system with our handy Geothermal Savings Calculator. Now that you have seen just how much a geothermal system can reduce your monthly costs, do what so many other Islip homeowners have done and contact the experts at ZBF Geothermal. Our skilled staff are waiting to help you plan your geothermal system and install it the right way so that you will get the most out it.