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Heos Sistema Is Refrigerant Neutral Now

Date: 29 March 2017

CAREL at Euroshop presented as a preview a new version of Heos that is compatible with natural (CO2, Propane) and low-GWP refrigerants, and therefore refrigerant neutral. Our know-how in water loop systems with variable-capacity DC inverter compressors, combined with our skills and experience in managing natural and low-GWP refrigerants, mean the benefits of the Heos system are now also available using refrigerants with a lower environmental impact.


Heos is the CAREL high-efficiency solution for managing refrigerated showcases that, rather than the classic architecture with a compressor rack serving the showcases via long refrigerant distribution lines, offers a solution comprising plug-in cabinets fitted with variable-capacity DC inverter compressors cooled by a water loop. This new refrigerant neutral solution thus adds the latest innovations in natural or low-GWP refrigerants to the established energy efficiency, direct cabinet temperature control, fast installation and flexible design of the Heos system. “The availability of Heos as a refrigerant neutral solution represents a new revolution in commercial refrigeration, fully exploiting the benefits of continuous modulation ensured by the Heos system, independently of the refrigerant used, above all natural ones”, commented Diego Malimpensa, Business Unit Manager. “With this new solution, we have brought together the results of years of innovation both in the use of natural refrigerants and of DC inverter technology, in a system that maximises the benefits of both”.

Continuous modulation
 Continuous modulation is the fundamental concept underlying the Heos system. Synergic operation of DC inverter compressors and stepper-motor electronic expansion valves controlled by technologically-advanced systems brings exceptional results in terms of control stability, optimisation of operating conditions and consequently energy efficiency, and preservation of product quality. All backed by a substantial improvement in robustness when compared to traditional systems, ensured by dedicated control, monitoring and predictive diagnostics procedures.

Comparative analysis systems
Considerable innovations have also been introduced regarding supervision, with comparative analysis down to a cabinet-by-cabinet level, a degree of detail that is not available on traditional centralised systems, and that guarantees a drastic reduction in maintenance times and helps prevent any malfunctions in advance. Indeed, it is now possible to analyse a comparison between individual or uniform groups of cabinets in detail, with specific dashboards that clearly highlight the differences in performance and control, immediately distinguishing the units with best performance and those where improvements are possible.  

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