excl VAT
Choosing a retail multideck involves both the purchase price and its running costs. The VSC inverter compressor offered for INFRICO Detroit cabinets allows refrigeration to follow changing demand. When is this option worth adding to your configuration?
VSC stands for Variable Speed Compressor. A conventional fixed-speed compressor controls temperature by switching on and off. An inverter system can change compressor speed: increasing output when demand rises and reducing it once temperature has stabilised. The compressor therefore does not need to run at one speed whenever it is on. Danfoss explains variable-speed operation.
The practical benefits are the potential for lower electricity use, more stable temperature and quieter operation under partial load. The compressor can avoid frequent transitions between stopping completely and running at full speed. Compressor manufacturer Embraco also explains the relationship between variable speed, temperature stability, noise and vibration. This is a general explanation of the technology; it does not identify the compressor supplier fitted to every INFRICO cabinet.
Lower electricity consumption also means less additional heat from the electrical energy used. An air-cooled multideck still rejects heat into the room, however: an inverter does not replace a suitable installation position or ventilation.
INFRICO presents the new UAE range as a coordinated system: a VSC compressor, hybrid evaporators, microchannel condensers and PWM-controlled electronic fans work together. Results for a complete UAE configuration cannot therefore be equated with replacing only a compressor. Check the scope of the exact option when ordering.
In its article dated 18 May 2026, INFRICO gives an example for a particular ML25DGUM2 configuration: up to 53% energy savings and an eight-month payback. These are manufacturer-reported results for a specific solution, not guaranteed figures for every Detroit size or temperature class. Assessment of an exact configuration requires its own data and comparison conditions. Read the original INFRICO article.
The manufacturer’s separate UAE comparison identifies a 2.5 m M2 cabinet: standard – 18.4 kWh/day; UAE VSC – 8.6 kWh/day. Test conditions: ISO 23953, climate class 3, +25 °C and 60% relative humidity. These figures belong to this comparison and should not be used to forecast other models.
Compare configurations with the same dimensions, temperature class, finish and end panels. Calculate payback using the final inverter surcharge and the expected annual electricity saving:
Annual saving = daily kWh saved × operating days per year × your electricity rate.
Payback in years = inverter surcharge / annual saving.
An illustrative calculation, unrelated to a particular INFRICO test: 3 kWh per day × 365 days × €0.20/kWh = €219 per year. If the surcharge were €600, the electricity-only payback would be approximately 2.7 years. This is a calculation example, not an electricity-price recommendation or a forecast of savings for a particular cabinet.
Waterin MDGW uses a water circuit for heat rejection, with potential building heat-recovery applications. These features must not be attributed to an air-cooled Detroit MDGU simply because its inverter option is selected.
Select VSC only where the INFRICO product card offers it as a compatible option. Electrical figures stated for the base cabinet do not become inverter-version figures merely by changing a selection. For a useful comparison, tell us the intended product range, opening hours and installation location. We can then help assess cabinet size and configuration.
