Perform preventative maintenence inspection on Waterfurnace 7 Series geothermal system. Performed all tests and took all readings with Aurora Aid Tool. Inspection of blower and compesssor compartments. Inspection of air coil. Current air filter is in good condition. Run test system in electric strip heating and geothermal heating. No issues found or suspected and all parameters measured within specs per manufacturer manual. System is operating properly, efficiently and ready for Winter. Set all thermostats to fan on continuously to help combat room temperature differences. Turned stage 3 differential to 2F and outdoor temperature lockout for axillary to 40F. Recommended dampering down registers in hot rooms, opening registers in cold rooms, and diverting air away from temperature sensors to prevent short cycling.