Heat Recovery from Air Compressors: Save Energy and Costs

An air compressor converts most of its electrical input into heat, which is usually blown away. Capturing that heat for water or space heating turns a cost into a useful resource.

How Heat Recovery Works

  • Heat exchangers capture heat from the oil and discharge air.
  • Recovered heat can warm water to 60–70 °C.
  • It can also preheat boiler feed water or space heating loops.

Where It Pays Back

  • Plants with continuous hot water demand.
  • Cold climates with space heating needs.
  • Facilities with large, heavily loaded compressors.

Implementation Tips

  • Size the heat exchanger to the compressor duty.
  • Ensure the cooling circuit remains effective.
  • Work with the compressor supplier on an integrated package.

How much heat can I recover?

Typically 70–90% of the electrical input can be recovered as useful heat with a properly designed system.

Talk to an Engineer

Contact Panrui with your flow, pressure and air quality requirements to get a recommendation and factory quote for your project.