General questions

What is a rotary screw air compressor?

A rotary screw compressor uses two meshing helical rotors to compress air continuously. Unlike piston compressors, which work in strokes, screw compressors provide a constant flow of air, making them ideal for workshops and factories that run for many hours per day.

When should I choose a screw compressor instead of a piston?

Choose a screw compressor when you need more than a few hours of compressed air per day, when your tools or machinery must not see pressure drops, or when noise and efficiency are important. Piston units are fine for light, intermittent use; screw units are better for continuous or high duty applications.

How long does a rotary screw compressor last?

With correct servicing and clean intake conditions, a quality screw compressor can often deliver 50,000 to 80,000 running hours or more over its life. The air end is the heart of the machine – protecting it with the right oil and filters is critical.

Sizing & selection

What information do you need to size a compressor?

We start with:

• The tools and machines you want to run.
• Your working pressure (bar) at the point of use.
• Operating hours per day and days per week.
• Your available electrical supply and kVA limits.
• Any air quality requirements (dry, oil-free, etc.).

Based on this, we recommend a TryComp or Budget Air model and supporting air treatment.

What is VSD and do I need it?

A Variable Speed Drive (VSD) compressor adjusts motor speed to match your air demand. When correctly applied, VSD can reduce energy consumption by up to 30–35%. It is most beneficial where demand varies significantly during the day.

Air quality & dryers

Do I really need an air dryer?

Yes, in most industrial environments. Compressed air always contains moisture. Without a dryer, this moisture condenses in pipes, tools and equipment, causing rust, blockages, product defects and higher maintenance. A correctly sized dryer protects your investment.

What is the difference between refrigeration and desiccant dryers?

Refrigeration dryers are common for general industry and achieve dew points suited to most workshop and factory conditions. Desiccant dryers provide much lower dew points and are used where very dry air is needed, for example certain food, pharmaceutical or outdoor applications.

Maintenance & running costs

How often should I service my screw compressor?

Service intervals depend on the model and application, but as a guideline:

• Basic checks and top-ups: every few weeks.
• Filter and oil changes: typically around 2,000 running hours.
• More extensive services: based on OEM recommendations and oil type.

Our team can put together a planned maintenance schedule based on your hours and risk profile.

What are the biggest drivers of operating cost?

Electricity is usually the single largest cost over the life of a compressor. Correct sizing, minimising leaks, using VSD where appropriate and looking after intake filtration all help manage energy spend. Regular servicing also prevents small issues from becoming large failures.

Support & service

Do you offer site visits and assessments?

Yes. Through The Titan Emporium we can arrange site visits in major regions and support SADC clients remotely or via partner networks. We assess your current installation, risks and upgrade opportunities.

Which regions do you cover?

We support customers across South Africa and export into Namibia, Botswana, Zambia, Mozambique, Zimbabwe and other SADC markets on request.