Three system Waterfurnace geothermal 5 series package systems 2 alcohol ground loops pressurized with three flow centers, repressurized both to 65 PSI Inspected and reinstalled all existing air filters dated in January Clean and flush all drain systems and minor maintenance cleaning of all systems System B had 25 FP1 service codes But is running in excellent condition today. Suspect lower than desirable ground loop antifreeze pressure All equipment is running in very good condition and ready for summer