Compressor technology offers up to 50% savings

Aermec Aersave

Aermec has launched Aersave, a groundbreaking technology for scroll compressors that can protect customers from rising energy costs by improving the energy efficiency of their chillers and deliver up to 50% energy savings.

Compressors on chillers are large energy users so replacing them with more energy-efficient systems was previously seen as the only solution to bring costs down. Aersave, the latest addition to Aermec’s portfolio of chiller technologies, offers an alternative solution.

Aermec’s Aersave is a major leap forward in chiller technology. It can help mitigate against rising energy costs whilst increasing performance levels, longevity of existing chillers and help customers transition towards the government’s net zero target.

The Aersave smart compressor controller converts any three- phase fixed speed compressor to a variable speed compressor. Aersave can be used on any manufacturers’ chillers, operates with any refrigerant and is compatible with all brands of BMS systems.

By enabling compressors to work smarter, Aersave eases reliance on the electrical grid, increases reliability, offers compressor protection and can easily be retrofitted by any air conditioning or refrigerant engineer. The benefits are decreased noise levels, precise room temperature and humidity control, compressor protection from short cycling and no interference with existing controls.


Aersave comprises two sensors instead of pressure transducers. One connects onto the suction line of the compressor, the other to the discharge line.

Its compressor control gathers the temperature from the two sensors’ points, together with gathering data via Modbus from the device via the compressor, which are then input to an algorithm, which calculates what speed and compressor capacity is required for the complete system to achieve its demand capacity.

While working on lower frequency for prolonged periods of time, an oil return sequence brings the oil back to the compressor to protect it.

Aersave also has multiple dip switch settings that can be switched dependent on the compressor type whether it is a reciprocating or scroll. It also controls the fan motor whether it is a condenser or evaporator fan motor. As the technology can work with any type of refrigerant, there is no need to cut into the refrigerant line. The compressor technology was successfully trialled by one of the largest fresh food manufacturers in Ireland where the chiller delivered a reduction in electrical consumption of 41%.

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