What temperature range for a refrigerated display case - Roller Grill

28, Jul. 2025

 

What temperature range for a refrigerated display case - Roller Grill

Display refrigeration cases hold and preserve items at low temperatures while providing clear visibility of the products. Cafes, bakeries and convenience stores are just some businesses that use glass doors and refrigerated cabinets to showcase their best products safely, clearly and attractively.

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Refrigerated display cabinets are ideal for storing fresh food items or cold drinks safely whilst merchandising the products attractively to consumers to increase sales. In addition, display refrigerators provide customers with the opportunity to look at what's for sale and choose the items they want at their leisure, so they're ideal for a self-service setting. Various types of refrigerated display cases are available to meet the requirements of different businesses. 

Vertical refrigerated display cases are upright chiller cabinets with the option of single, double or triple clear glass doors. Depending on the capacity, they can hold numerous items while allowing consumers to see and retrieve the products they want easily. You often see sizeable vertical chiller cabinets in supermarkets, shops, restaurants, bars and commercial kitchens. In contrast, small under-counter upright display refrigerators are perfect for small spaces, such as bars.

Horizontal refrigerated display cases are ideal for displaying cakes, dairy products, salads and sandwiches and are designed to fit neatly on a countertop. They are suitable for bakeries, patisseries, cafes and canteens.

Accurate temperature control for temperature-sensitive food items

Domestic refrigerators typically offer a universal solution for keeping food cool. This one-size-fits-all approach is not appropriate for commercial food supply establishments. The requirements and standards for chilled food are higher in a shop or restaurant than in a simple domestic kitchen.

Temperature ranges explained

Commercial refrigerated display cases are designed to maintain consistent temperatures. Display refrigerators typically range from -1˚C and 10˚C while display freezers will maintain temperatures between -10°C and -25°C. These temperature ranges keep food products safe and meet standard environmental health regulations.

In food retail, various types of food must be stored and displayed at different temperatures, and it's essential to maintain the correct range for each. Doing this maintains the product's taste and texture and keeps it looking appealing to customers. Finally, keeping food products at the right temperature ensures your food is safe. If food such as meats, seafood, cheeses or patisserie were to spoil and make customers ill, it would be disastrous for the reputation of your business and your customers' health. 

Please note: Refrigerated display cabinets are designed to keep food products cold, not to cool down hot food to a safe holding temperature. The temperature must be maintained between -2 °C and 5 °C, depending on the type of food; otherwise, food safety will be compromised. 

 For example, a refrigerated display case for displaying seafood such as caviar in a hotel or restaurant should be kept at -2 to 2 °C. On the other hand, a countertop refrigerated display case for drinks should provide a temperature of between 2 and 8 °C . these types of refrigerated display cases are ideal for selling pre-packaged beverages such as sodas, beers and juices in high-traffic areas where they will be restocked frequently. 

Understanding food safety temperatures

Commercial food handlers and operators are responsible for storing food safely. The cold holding temperature of a refrigerated display case should be 5°C or below. This temperature prevents the growth of dangerous pathogens and bacteria, which is especially important if you are supplying temperature-sensitive foods such as seafood, cream, milk, egg dishes, meats and cheeses. 

Don't overfill the chiller cabinet as if it's too crowded, the air can't circulate, and it will not perform as effectively. Check the temperature of your refrigerated display regularly using a fridge thermometer. 

Features of a refrigerated display case

Refrigerated display cabinets are a broad category encompassing under-counter, countertop and free-standing, upright models. Glass door vertical cabinets are also favoured by chefs in busy commercial kitchens, where they are perfect for cold food storage and quick and easy retrieval of items. Glass door refrigerator display cases are also used in restaurants and canteens, and also in food service operations in supermarkets, offices, hotels, hospitals, canteens and stadiums.

When it comes to merchandising your products, open display cases offer more customer convenience than closed glass-door models because they create no barrier between customers and products. On the other hand, closed refrigerated display cases are more energy efficient.

Options for temperature monitoring include electronic controllers for reliability, thermometers, defrost timers and high-temperature alert alarms.

Other features to consider include the interior lighting, shelves, self-closing doors, automatic condensation evaporation and castors or legs. 

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Some models are available with security covers. These securely lock open-front display refrigerators when the establishment is unattended and save money by enhancing the efficiency of the refrigeration system.

What you should know about Open Display Refrigeration - LinkedIn

Open display refrigeration works by circulating cold air up the back and top of the products placed in the case.

Cold air is then recirculated through the bottom front grill which provides a natural circulation of cold air through the unit.

However, they can be very temperamental and sensitive to the environment. A key to optimal usage is how they are used, and where they are placed.

A few simple do’s and don'ts which will help you maintain temperature, performance and energy efficiency in your open display.

Placement of Open Display fridges

It is important to consider the placement of Open Display refrigeration as external air flow and potential drafts on the air curtain will cause the unit to malfunction.

The cold air in the front interfaces with the warm air so any movement of warm air into the case will affect performance.

Additional air flow coming into the unit from a fan, air conditioner, doorway, or a window draft can have a dramatic effect on the fridges ability to maintain temperature.

How to fill an Open Display fridge

Another cause of energy inefficiency is if the front grill is blocked by products. The fridge begins to take in ambient air instead which causes the motor to work harder. 

It is critical that the flow of return air is not blocked as this doesn't just overwork the machinery, but may cause the temperature to fluctuate.

Another simple way to improve performance is to leave gaps in between products.

When items are arranged close together, there are no gaps for airflow to surround the product.

This would cause the fridge to work harder to chill the product in the center and reduce energy efficiency.

Contact us to discuss your requirements of Open Display Chiller. Our experienced sales team can help you identify the options that best suit your needs.