Compressor size is best chosen by flow, not power alone. Comparing 7.5kW, 11kW and 15kW machines shows how the right size cuts energy cost and prevents pressure problems.
What Each Size Delivers
- 7.5kW machines suit small workshops and single tools.
- 11kW machines cover several tools or small production.
- 15kW machines feed larger systems and multiple users.
Matching Flow to Demand
- Check FAD at your working pressure, not just kW.
- A machine that is too small runs flat out and wears early.
- An oversized machine cycles and wastes energy.
The Right Choice
- List your air consumers and peak demand.
- Choose the smallest machine that covers peak flow with margin.
- Prefer variable speed if demand varies widely.
Is a bigger compressor always better?
No. An oversized machine costs more and runs less efficiently at light load. Right-sizing saves energy.
Talk to an Engineer
Contact Panrui with your flow, pressure and air quality requirements to get a recommendation and factory quote for your project.