What's the difference of a Fixed Speed vs. Variable Speed Compressor?
February 17, 2022
Variable Speed Rotary Screw Compressors
VSD (variable speed drive) compressors will adjust the speed of the motor to meet the air demand of your production while maintaining a constant air pressure. Variable speed machines can run on 100% flow or can also fluctuate to less flow to conserve energy. The machine will align with current air demand.
Fixed Speed Rotary Screw Compressor
Fixed speed compressors are either off or running full throttle. There are ideal applications where there is a need for constant compressed air 24/7. The compressor will run at a constant RPM unless turned off. The inlet valve will flutter based on when air is needed or not needed instead of ramping the engine up and down.
Let's Make it Simple:
Variable Speed Benefits
- Reduced energy consumption (in the proper application)
- Quieter than a fixed speed when RPM is running lower
- Consistent plant pressure
- Increased lifetime of components
- Low inrush current when motor starts
- May qualify for energy incentives
Fixed Speed Benefits
- Lower capital cost
- Increased parts availability
- Lower maintenance and repair costs
- Most efficient in applications with a consistent demand
For any questions in regards to compressors and which one would work best for your industry, please contact is on 1300 555 284 or find a local distributor today.
Variable Speed Drive
Adapting the air flow to the needed airflow, our variable speed drive compressors provide a premium option to your needs. Learn more about our options.
Fixed Speed Drive
Rotary screw compressors are the preferred compressor choice when an application needs a constant flow of pressured air. Learn more about our fixed speed alternatives.
Benefits of Using a Rotary Screw Air Compressor
The right screw compressor can make your business more productive and more efficient, as well as improve the work environment for your team.
CP Screw Compressors
Check out an overview of Chicago Pneumatic Compressors
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