Reduced Heating System Maintenance Costs
Geothermal systems have a longer life cycle: 25 years for the mechanical equipment and 50-plus years for the in-ground loop. Compare this to the 15-20 year life expectancy for traditional HVAC equipment, and geothermal just makes sense.
With absolutely no combustion, geothermal systems do not need annual service. The only monitoring needed is on the loop (for temperature and pressure). Air filters should be cleaned or changed regularly.