Choosing the right air filtration system is one of the most effective ways to reduce overall energy consumption in your building. The most crucial aspect of saving energy with air filters is to select a high-quality, high-efficiency air filter with the lowest average pressure drop. The most energy will be saved by combining efficient air filters, single-stage or multi-stage, achieving the lowest average pressure drop, with a variable frequency drive (VFD) fan.
What is an HVAC Variable Frequency Drive (VFD) Fan?
A VFD fan adjusts its speed in response to the amount of pressure on the air filter. The higher the pressure, the faster the fan spins, consuming more energy. When you install a new filter in your air filtration system, the fan will naturally start at a lower speed.
It's not just the filters that save energy. The VFD enables operators to adjust the airflow based on the time of day. In a school, for example, when all students are in class, you can turn up the fan. However, when the building is empty at night, you can reduce the speed of the fans on a timer, for example, from 10 p.m. to 7 a.m., reducing energy consumption. This adaptability is great for saving money and can help you save energy with efficient air filters.
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Air filtration is an important part of maintaining healthy indoor air quality (IAQ).
