Meridian, Idaho, Geothermal Idaho Geothermal, LLC is the top WaterFurnace geothermal contractor in Meridian, Idaho. We'll help you comprehend all the benefits of geothermal heating and cooling. We’ll make sure your WaterFurnace system is properly installed, too. And when it comes time for service? Nobody in Meridian can beat our service! Contact Idaho Geothermal, LLC today. Like a little up-front look at the savings a WaterFurnace geothermal heating and cooling system can give you? Use our simple Geothermal Savings Calculator.