09/03/2026
Two temperature readings can tell your HVAC technician more than you might expect.
Measuring the air at a supply register and comparing it with the air entering through the return gives technicians another clue about how the system is performing. The readings are considered alongside equipment condition, airflow, operating conditions, and other diagnostic information.
It is not about guessing from one number. It is about gathering useful information and looking at the complete system.
Need help understanding how your system is performing? Schedule service at www.frhvac.com or call (410) 489 1751.