GSHP's generally last at least twice as long as conventional systems. The GSHP contains fewer mechanical components, and all components are either buried in the ground or located inside the home, which protects them from outside conditions. The underground loops carry up to a 50-year warranty.
A typical unit operates in cooling on the hottest day at about 55 degrees in our area. A traditional unit operates at the highest failing temperature, upwards to 110 degrees.