Inspect each Waterfurnace system, start each system up with aid tool and test on max speed 12 verifying proper operation at full capacity. All filters replaced 11/6/25 3 “#35 water panels” sold on visit third humidifier hiding on back side of unit. Geo 2 & 3 showing no signs of concern with proper operation parameters and good heat of extraction. Geo 1 in center of house has multiple error codes for e72 suction temp sensor error. Inspected sensors and no concerns with sensors. When flipping sensors had issue post with -112 on suction with both sensors. EEV control has internal failure causing it to not work properly at all times e72 posted 570 times during operation. Desert air system is becoming filthy from fresh air allowing in dirt and bugs that have built up over the years of runtime. Suggest installing custom filtration for fresh air and performing deep cleaning on air coil to remove the bug/dust/dirt debris. Box measures 6”x22” for fresh air with a 6” round supplying it.