Hydronic systems distribute capacity. When flow is wrong, the system can struggle even when major equipment appears to be operating correctly.
Flow determines available capacity
A coil cannot transfer the intended energy without the intended water flow and temperature difference. Measuring both helps distinguish distribution problems from equipment and control issues.
System changes affect every branch
Valve positions, pump operation, strainers, balancing devices, piping modifications, and control sequences can shift flow throughout a network. The symptom may appear far from the cause.
Balance for real operating conditions
A useful test confirms equipment status and control intent before interpreting readings. That context keeps adjustments aligned with how the building is expected to operate.