
Kitchen Exhaust System for American Burger Chain’s First Swedish Restaurant
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Introduction.
Our client in this case is a renowned American hamburger chain, famous for its premium burgers and casual dining experience. The company recently opened its first Swedish restaurant in Stockholm, located in the iconic Hötorgskrapan-building in the city center. Known for their fresh, made-to-order burgers, they have established a loyal customer base worldwide, with more than 1,900 restaurants. The Stockholm location is committed to upholding the company’s high standards of food quality, safety, and customer satisfaction.

The problem.
Located in the vibrant Hötorgskrapan, a landmark property owned by Wallenstam, our client’s restaurant required a robust and efficient solution to manage kitchen exhaust air. The company places great emphasis on cleanliness and operational efficiency, which extends to their kitchen facilities. Effectively managing the grease and odors produced during cooking was a priority to ensure the kitchen environment remained safe, clean, and aligned with the brand’s high standards.


The solution.
To support the needs of our client’s first Swedish restaurant, Mellifiq provided an efficient RENA Kitchen Solution 40. This solution was designed to keep the kitchen exhaust system’s ducts clean and maintain the highest level of hygiene within the kitchen, which is essential in a fast-paced food service environment like our client’s restaurant.
The RENA Kitchen Solution 40 is an advanced air treatment system that is specifically designed for smaller to medium-sized restaurants. It offers effective grease removal, which ensures that the exhaust air is clean before being expelled from the building. The system not only helps keep the ducts clean but also prevents grease buildup that could pose a fire hazard.
The RENA Kitchen Solutions is equipped with a high-performance, oxygen-fed ozone generator, that injects pure ozone into the ventilation system, efficiently preventing grease buildup in the ducts. This reduces fire hazards and helps maintain a clean kitchen environment. In addition, the system helps reduce odor and minimizes the risk of cooking smells to spread throughout the building. This is particularly important in high-traffic areas like Hötorgskrapan, where the restaurant is part of a mixed-use property with various tenants and visitors.
The compact design makes it ideal for a fast-casual restaurant like our clients’, where space is often limited. Despite its small size, the system delivers excellent performance in grease removal and odor control, making it a perfect fit for the kitchen’s needs.
The system is designed to be low-maintenance, with easy-to-clean parts that ensure the system remains effective over time. This feature is particularly beneficial for a high-volume restaurant like our clients, where the kitchen operates continuously during business hours.
Evaluation.
The installation of the RENA Kitchen Solution 40 at the client’s first Swedish restaurant in Hötorgskrapan highlights how effective kitchen exhaust air treatment can enhance operational efficiency, safety, and sustainability in a fast-casual dining environment.
Mellifiq’s solution ensures that the restaurant maintains high standards of cleanliness, safety, and air quality, all of which are critical to our client.
By providing an easy-to-maintain, energy-efficient solution for exhaust air treatment, grease elimination and odor control, Mellifiq helped our client to meet the rigorous demands of their kitchen while ensuring a comfortable experience for both employees and customers.
This case is a great example of how modern exhaust air treatment solutions can support international brands in maintaining their high standards and delivering exceptional dining experiences.




