To understand why duct leakage is so expensive, you must understand the fan affinity laws. These physics principles govern the relationship between a fan’s rotational speed (RPM), the volume of air it moves (CFM), and the energy it consumes (BHP)
While airflow and pressure change significantly with speed, the most critical law for your budget is the Power Law. The three key relationships:
Imagine your duct system has leaks. To maintain the required suction at the machine, you increase the fan speed by just 10% using a Variable Frequency Drive (VFD).
This geometric progression is why 'small' leaks are financial disasters. Conversely, a sealed, low-resistance system like Nordfab Quick-Fit allows you to reduce fan speed. Thanks to the Power Law, dialing a fan back by just 10% reduces your energy bill by roughly 27%.