AHT Cooling Systems Brand Guidelines: Austrian Plug-In Refrigeration Maker, Now Part of Daikin

A successor to Bauknecht in Upper Styria.

AHT Cooling Systems began in Rottenmann, a small industrial town in Upper Styria, Austria, in 1983. German Wikipedia says the name was first an acronym for Austria Haustechnik, and that in April 1983 the company was entered in the commercial register at the court in Leoben as the successor to Bauknecht Austria; AHT itself gives the date as 16 April 1983 and describes Bauknecht as a producer of electrical household appliances. AHT’s company timeline says the site had been the Austrian main plant of the Bauknecht group since 1959, and it traces iron working in Rottenmann back to a first documented mention in 1442.

With the Bauknecht business AHT took over its product range, German Wikipedia says, but over the following years it moved the plant towards commercial refrigerators and freezers for food retail. Two developments from those years still shape the company’s story. In the mid-1980s it worked on chest freezers with glass lids, then not standard; AHT says the first ones reached the market in 1986. And in the early 1990s it developed a chest for minced meat that, AHT says, could hold the upper temperature limit set by the meat hygiene rules in a single unit, which German Wikipedia links to minced meat becoming available in supermarkets.

The company went public in 1998, German Wikipedia says. Rottenmann remains its headquarters and main production plant; the company also lists an office in Vienna.

Plug in, refrigerate, sell more.

AHT’s specialty is the plug-in unit: a refrigerated or freezer cabinet with its own built-in refrigeration that a shop can plug into a socket, rather than connecting to a central remote system. The private-equity firm Bridgepoint, announcing the company’s sale in November 2018, described AHT as the global market leader in commercial plug-in refrigeration for food retailers, with an installed base of more than one million units, and called plug-in units the fastest-growing part of commercial refrigeration, replacing central remote systems because of lower total cost of ownership and quicker installation. AHT’s chairman, a Bridgepoint partner, added that customers found plug-in units easier to install or relocate. AHT calls itself the world market leader in the segment and works under the slogan “We cool, you sell!”

Its range today runs to refrigerators and freezers, overhead cabinets, refrigerated shelves, ice cream chests and promotion coolers, along with remote and hybrid systems using carbon dioxide. Its customers, the company says, include discount and supermarket chains and makers of ice cream and drinks; German Wikipedia adds convenience stores and petrol stations.

Refrigerant is the other part of the story. German Wikipedia says that under the chief executive who took over in 2000, AHT introduced its first CFC-free units using R-290, or propane, which it still uses across its appliances. AHT dates its first research into “green” refrigerants to 1995 and says its first R290 units were used at the Sydney Olympic Games in 2000. Its 40th-anniversary history of 2023 describes the company as a supplier of refrigeration using natural refrigerants, naming R290 and R744.

AHT says it holds ISO 9001 and ISO 14001 certification. Its anniversary history also notes that around a quarter of its staff are former apprentices, and that it has trained 420 apprentices in 40 years.

Design and documentation.

Commercial refrigeration is a trade that sells itself through equipment people rarely notice. In restaurant kitchens it appears as rows of stainless steel reach-in refrigerators and freezers, undercounter units and prep tables, built to be cleaned, opened hundreds of times a day and serviced on site. Its makers present those cabinets plainly: model numbers, door counts, capacities and finishes, with the brand name on a small badge or kick plate.

In shops the same makers face the customer. Glass-door merchandisers, open-air cases and curved glass display counters hold drinks, dairy and prepared food at the point of sale, and many carry the colours of a bottler or a grocer rather than the maker’s own. Ice machines sit between the two worlds: a machine that turns water into cubes, flakes or nuggets, usually above a bin, in a bar, hotel corridor or hospital kitchen.

The industry meets at trade fairs. The NAFEM Show in the United States, organised by the North American Association of Food Equipment Manufacturers, HOST in Milan and HostelCo in Barcelona are among the places where makers show new cabinets and ice machines to dealers, consultants and chain buyers. Restaurant association shows have played the same role for decades: True Manufacturing, for one, first showed its foodservice line at the National Restaurant Association show in 1972, according to a 2017 profile in the FCSI magazine.

Ownership varies widely across the names in this guide: some remain family companies, some are listed groups such as Japan’s Hoshizaki, and others now sit inside larger equipment groups. This guide sets out what can be checked about each brand — who founded it, who owns it and where it says its products are made — and marks clearly what rests only on the company’s own word.

Investors, four plants and Daikin.

After its listing AHT passed through several financial owners. German Wikipedia says the private-equity investor Quadriga Capital took it over and off the stock exchange in 2003, passed it to the investor Equita, and bought it back in 2006. Bridgepoint says it acquired the business in November 2013. In those years AHT built factories abroad: production began in Changshu, China, in 2008; in Navegantes, Brazil, in 2014; and in the United States, at Ladson near Charleston, South Carolina, in 2017, according to the company, which today lists its four plants as Rottenmann, Changshu, Navegantes and Charleston. Bridgepoint likewise described four manufacturing sites in Austria, China, Brazil and the USA.

On 26 November 2018 Bridgepoint announced that it would sell AHT to Daikin Europe N.V., the European subsidiary of the Japanese air-conditioning group Daikin Industries. Cooling Post reported on 26 February 2019 that Daikin had confirmed completion of the purchase of all of AHT’s equity, and noted that Daikin had bought the Italian refrigeration maker Zanotti in 2016. Daikin announced in March 2019 that Martin Krutz, who had spent 28 years in the Daikin group, most recently as managing director of Daikin UK, would become AHT’s chief executive from 1 March 2019. AHT’s timeline records 2019 as the year it became “a member of the DAIKIN family,” and its website carries that line beside the AHT name.

The company says it sells in 115 countries. One trap for searchers: the domain aht-group.com belongs to an unrelated German consultancy, not to the refrigeration maker, whose site is aht.at.

For a design guide, AHT Cooling Systems shows how a regional plant can become a specialist with a global footprint under a series of owners. Compare Epta and Arneg, two Italian makers of supermarket refrigeration. For this guide we use an alpine green, a pale glass tone and a soft grey with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep AHT Cooling Systems’s identity on hand — save it to a board in the Made Good inspiration library.