6 Ways to Improve Centrifugal Pump Efficiency and Reduce Costs

 

Improving pump energy efficiency isn’t just about sustainability 

It’s one of the most effective ways to reduce operating costs across industrial systems.

Below are six practical, proven ways to improve the efficiency of centrifugal pumps, based on real-world applications Allflo supports every day.

These strategies focus on practical system improvements that deliver measurable efficiency gains without major capital replacement.

1. Trim impellers

• When pumps are oversized, excess pressure and flow waste energy

• Impeller trimming is often more efficient than throttling valves

• A cost-effective way to match pump output to system demand

2. Use variable frequency drives (VFDs)

• VFDs adjust motor speed to meet real-time demand

• Ideal for systems with variable flow requirements

• Particularly effective in cooling and process control applications

3. Use parallel pumping systems

• Running multiple pumps in parallel improves efficiency

• Keeps pumps operating closer to their Best Efficiency Point (BEP)

• Reduces energy waste during fluctuating demand

4. Reduce pressure loss in pipework

• Pipe length, diameter, layout, and material all affect efficiency

• Minimise bends and restrictions

• Maintain clean, corrosion-free pipework

5. Avoid oversized pumps

• Oversizing is one of the most common causes of energy loss

• Pumps operating far from BEP consume unnecessary power

• Correct pump selection delivers immediate efficiency gains

6. Avoid unnecessary pump operation

• Automation and control systems prevent wasted run-time

• Sensors and controls ensure pumps only operate when required

• Simple changes can deliver significant cost savings

Improving pump efficiency doesn’t require guesswork.

With the right pump selection, system design and controls, energy savings can be achieved without compromising performance.

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These recommendations are based on real-world pumping systems Allflo assesses and supports across industrial, processing and infrastructure applications.