Demand Control Refrigeration

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Affordability

Demand control refrigeration is most economic for larger refrigeration systems (greater than 50 hp).   

Cost savings

Demand control refrigeration will provide up to a 40% reduction in energy consumption compared to a conventional refrigeration system.

Environmental considerations

The compound effect of businesses across B.C. running more efficient refrigeration helps reduce the need for new energy generation facilities, which reduces road construction, trucking and impacts to aquatic systems.

What you need to know

• Conventional refrigeration systems operate at one “speed,” as when thermostat reaches a certain desired temperature the systems turn off. Once the thermostat reaches a defined higher temperature, the compressor starts again running at the same “speed.” Most refrigeration systems run only 60% to 80% of the time.
• Energy is consumed every time the compressor starts or stops.
• Demand control refrigeration systems can adjust their speed. As the cooling demand slows, say overnight, the compressor adjusts itself to run continuously at a lower rate. If demand picks up, for example when a new batch of product is put into a freezer, the compressor rate increases.
• By continuously running as much as possible, the demand control system avoids the energy wasting start and stop procedure.

FAQ

Can demand control be retrofitted?
Yes it can. Demand control is most economic for larger systems, but manufacturers of both variable speed compressors and control systems are making smaller, more cost-effective units all the time. Consult with your refrigeration service provider to see if demand control is for you.