What is a VFD and What Are the Benefits?

Hey, folks. Paul here at G&D Chillers. Today, I wanted to talk to you about a VFD. We use several models here, depending on what motor is going on and what application it is.

We use them on our pumps to vary the speed of that pump and maintain a constant pressure for your process. We use it on our condenser fan motors to maintain a consistent head pressure without using too much fan power. What these VFDs do is on a pump it controls the pressure in a system. If you’re only running one part of your process and only need half of the motor horsepower to maintain the pressure, it’s going to ramp that pump down to maintain that pressure and save energy.

On a condenser fan, it’ll do the same thing. If it’s seventy degrees outside, that fan is going to ramp down and it won’t have to run very hard to maintain a proper head pressure in the system. Though if it warms up outside and you’re on a hundred-degree day, it’ll ramp up and keep that head pressure where it needs to be.

These VFDs are going to save energy and save you operational costs.

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