Preventative maintenence inspection on Waterfurnace 5 Series geothermal unit. Air filter is in decent condition. Check again in 1-2 months. Visual inspection of air coil. Check fault history with Aurora aid tool. No error fault codes in the system. Reset normal operation codes. Test run operation of electric heat strips. All strips are operating properly. Test ran in geothermal heating aswell. Bo issues found or suspected with electric strip heat, and geothermal heating. Humidifier pad is in good condition. All systems are operating properly, efficiently and ready for Winter.