Fixed speed vs variable speed

Fixed Speed vs Variable Speed

Choosing between a fixed speed and variable speed compressor? Here are some of their differences to guide you in making your decision.

Another benefit of a variable speed compressor is that as they vary speed air speed up and down gradually with the air demand, there is less wear and tear on the internal components of your machine.

The Pilot Air Alta Tec Series are variable speed, oil injected rotary screw compressors that runs from 7.5 to 37 KW, suitable for most businesses, small to medium to large.

“Variable speed compressors deliver efficiency and flexibility — cutting energy costs without compromising performance.”

Alta Tec Series

Alta Tec Series

Direct driven performance
Sophisticated electronic control
Reduced lifetime cost of ownership and reduced energy costs.
Suitable for most businesses, small to medium to large
Less maintenance required

 

“Pilot Air helps Sydney businesses choose the right compressor, built to handle Australia’s toughest conditions.”

Key Takeaways

Two Distinct Technologies

Fixed-speed runs at constant output, while variable-speed adapts to real-time demand.

Energy Efficiency Gains

Variable-speed compressors can significantly cut power use under fluctuating loads.

Engineered for Australia

ALTA-TEC units are built to withstand heat, dust, humidity, and coastal environments.

Business Fit

Fixed-speed may suit steady-demand sites; variable-speed is ideal for variable or high-cost energy settings.

Air Compressor Products

From air compressors through to compressed air storage, treatment and distribution, our extensive range of compressed air products ensures we have the right solution for your business needs, no matter the industry or application. We also offer custom-built packages and compressed air systems that are fit for purpose and tailored to your budget.

Pilot ALTA-TEC Industrial 7.5KW (10HP) Variable Speed Rotary Screw
Pilot ALTA-TEC Industrial 7.5KW (10HP) Variable Speed Rotary Screw

The Pilot ALTA-TEC Industrial 7.5KW (10HP) Variable Speed Rotary Screw air compressor features remote monitoring (on demand) - via GSM, GPRS, Ethernet or WiFi module - for online compressor status, remote assistance, connection with PC, smartphone and tablet, and connection between neighbour compressors.

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Pilot ALTA-TEC Industrial 11-15KW (15-20HP) Variable Speed Rotary Screw
Pilot ALTA-TEC Industrial 11-15KW (15-20HP) Variable Speed Rotary Screw

The Pilot ALTA-TEC Industrial 11-15KW (15-20HP) Variable Speed Rotary Screw air compressor features remote monitoring (on demand) - via GSM, GPRS, Ethernet or WiFi module - for online compressor status, remote assistance, connection with PC, smartphone and tablet, and connection between neighbour compressors.

Learn More
Pilot ALTA-TEC Industrial 30-37KW (40-50HP) Variable Speed Rotary Screw
Pilot ALTA-TEC Industrial 30-37KW (40-50HP) Variable Speed Rotary Screw

The Pilot ALTA-TEC Industrial 30-37KW (40-50HP) Variable Speed Rotary Screw air compressor is part of the ALTA-TEC range - the newest direct drive, variable speed (with inverter drive), oil injected rotary screw compressor range.

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The Pilot Air Team

Our compressed air experts are the best in the business. Committed to outstanding service delivery, our team and network of over 50 specialist technicians are with you every step of the way.

Compressed Air Products

We have Australia’s most extensive range of air compressor solutions, from high-performance models to portable and compact units. We also manufacture the latest air storage, air treatment and air distribution solutions. We offer a complete inventory of spare parts and on or off-site servicing and maintenance and can customise a complete compressed air solution for any business. 

Best suited for industrial applications to meet the ever-changing demands of the industry.

Rotary Screw
Compressors

All the reliability of a Pilot Air product, in a quiet package.

Silent Air
Compressors

Tailored for trade, professional or industrial applications.

Reciprocating Air
Compressors

Horizontal and vertical air receivers to complete a compressed air system installation.

Compressed Air
Storage

100% pure oil-free air, designed for applications where air quality is critical.

Oil-Free Air
Compressors

A range of products that offer safe, clean air, free from impurities.

Compressed Air
Treatment

Ideal for clients with small, specialist compressed air requirements.

Compact Air
Compressors

Efficient and easy to install, with high-quality components.

Compressed Air
Distribution

Perfect for noise sensitive environments where air demands are constant.

Portable Air
Compressors

Perfect for noise sensitive environments where air demands are constant.

Portable Air
Compressors

Complete solutions, including horizontal and vertical air receivers.

Compressed Air
Storage

Ideal for clients with small, specialist compressed air requirements.

Compact Air
Compressors

Frequently Asked Questions

What is the difference between fixed-speed and variable-speed compressors?

Fixed-speed compressors run at full capacity whenever they’re on, while variable-speed compressors (like Pilot Air’s ALTA-TEC series) adjust motor speed to match demand, reducing energy use and wear on hot, humid, and dusty Australian worksites.

What are the energy savings of switching to a variable-speed compressor?

Variable-speed compressors reduce idle time and ramp up/down gradually with load changes, often cutting energy consumption and operating costs significantly under variable demands. Pilot Air describes these benefits in its Fixed speed vs Variable speed guide.

Are variable-speed compressors more reliable under harsh Australian conditions?

Yes — because they run gentler during lower demand periods, have reduced cycling, and are built to handle heat, humidity, and dust. The ALTA-TEC series is especially designed for this, with sturdy components and electronic controls.

What size/range should businesses consider for variable-speed compressors?

Pilot Air offers the ALTA-TEC variable-speed rotary screw range from 7.5 kW to 37 kW, suitable for small, medium and larger operations. These units include direct drive, inverter control, and remote monitoring options. More details are in the Products: Rotary Screw Air Compressors range.

How does Pilot Air support Sydney-based customers in choosing between fixed and variable speed?

Pilot Air provides local technical support, spare parts, and servicing based in Sydney. They also offer custom audits, system design & installation to help businesses select the right speed-control option for their usage profile. See their System Design & Install service page for local assistance.

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