New Construction in Idaho Falls So you have the blue prints to build your dream home. Why not include the most dynamic, luxurious heating and cooling unit available on the market in your plans. Recently built homes come with a pride of ownership that previously-owned houses cannot rival. By adding a WaterFurnace geothermal system in your Idaho Falls home, you transfer that feeling to include your heating and cooling system. Adding a geothermal system in your newly built home means you can roll the cost into your monthly mortgage payment. The money you save in operating costs will generally balance out the increase in mortgage payment - which means you may see a positive cashflow!