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Heat recovery - ACS Compressors

Save energy easily and enjoy financial benefits quickly

The energy consumed for the generation of compressed air is converted almost entirely to heat.


This is a high potential for savings since one compressed air station with a power requirement of 75 kW during 4000 operating hours, for example, will need approximately 300,000 kWh of power every year.

Use this energy in the form of:

  • Warm air to supplement space heating
  • Warm water to support central heating
  • Warm water for industrial water
Heat Recovery infographic

How big are your potential savings?

By way of the example, below you can see an overview of the energy saving potential of the compressors depending on the respective installed rated outputs.

Have your own savings potential calculated by ACS!

Example types of use for profitable heat recovery

Hot air for the room heating

The heated cooling air is used to heat a room via a ductwork system. Temperature controlled valves achieve a regulated, adjustable room temperature. In winter the heat from the exhaust air is used entirely or partly for heating purposes. In the summer it is blown out into the air via an exhaust air channel.

Acceptable level for the temperature: 20–25 K above ambient temperature
Hot water for heating purposes

Plate heat exchangers are used to produce hot water. The heating water runs through “plates” within a closed housing. The hot compressor oil flows between plates and housing and delivers its heating power to the hot water.

Acceptable hot water temperature: up to 70° C
Heat for service and process water

The heat recovery process is the same as for heating water. Shell-and-tube heat exchangers are used to prevent oil from penetrating the service water even if there are leaks.

Acceptable service water temperature: up to 70° C