09/04/2026
This is a true story from a recent annual service. When we service a system, we connect digital gauges all over it: air pressures, air temperatures, refrigerant pressures and temperatures on both sides, even the outdoor temperature. All those readings feed a real-time app that gives the system a score. This one scored 73%. That's a C-minus. The customer had no idea there was a problem because it was still cooling!
But our technician saw high superheat and high static pressure in the data, checked the tonnage on the outdoor unit, and dialed the fan speed to exactly the airflow the system needed. Then he watched the score climb to 98%. That's an A. The customer got a before-and-after report, and every time that system comes on now, he's saving money!