Geothermal Benefits Okay. So maybe we are a little biased. But we at Sun City Plumbing & Heating are hard-pressed to think of anyone in Las Cruces who couldn't profit from a WaterFurnace geothermal heating and cooling system. WaterFurnace geothermal systems are among the most economical, energy-saving, and eco-friendly heat pumps Las Cruces residents - or anyone - can buy. With a WaterFurnace geothermal system from Sun City Plumbing & Heating, you'll see... More comfort. Because WaterFurnace geothermal systems circulate air with stunning precision, hot and cold spots are taken away. Lower monthly costs. Because a WaterFurnace geothermal heat pump operates far more proficiently than traditional heating and cooling systems. Dependable performance. With other standard heat pumps and air conditioners that are often broken due to rain, snow, ice, debris, temperature extremes, and vandalism, our geothermal systems are not subject to those conditions because of their indoor installation. Environment friendly. Given that our geothermal systems are eco-friendly heat pumps, extruding no dangerous gasses such as carbon dioxide, carbon monoxide, or other greenhouse gasses. Quiet operation. Because there's no chattering outdoor unit! No wonder more and more people in Las Cruces are turning to Sun City Plumbing & Heating for their WaterFurnace geothermal needs.